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Biology EOC Review Pack. The answers. 1) List the characteristics of life. E nergy H omeostasis O rganization R eproduction A daptation & Evolution G rowth & Development A djust to a stimulus. 2) Explain the difference between independent & dependent variables.

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1 list the characteristics of life
1) List the characteristics of life

  • Energy

  • Homeostasis

  • Organization

  • Reproduction

  • Adaptation & Evolution

  • Growth & Development

  • Adjust to a stimulus


2 explain the difference between independent dependent variables
2) Explain the difference between independent & dependent variables

  • Dependent depends on Independent

  • Independent - what is tested/changed

  • Dependent - effect; what you’re measuring

  • Ex. In Redi’s experiment, what is the independent variable?

    • Covering the jar

  • Dependent variable?

    • Presence of maggots


3 explain the purpose of a control group
3) Explain the purpose of a control group variables

  • For comparison

  • To compare with experimental group data

  • Receives no treatment

  • Redi’s control group:

    • Uncovered jars


4 w hat is the difference between quantitative and qualitative data
4) W variableshat is the difference between quantitative and qualitative data?

Quantitative : quantity : numbers

data presented in graphs

Qualitative : words, descriptions


5 summarize the steps in the scientific method
5) Summarize the steps in the scientific method variables.

  • 1. Problem

  • 2. Background (research other experiments)

  • 3. Hypothesis

  • 4. Experiment

  • 5. Observation (data)

  • 6. Conclusion (analyze data)


6 fill in the chart carbohydrates
6) Fill in the chart: variablesCarbohydrates


6 fill in the chart lipids
6) Fill in the chart: variablesLipids


6 fill in the chart proteins
6) Fill in the chart: variablesProteins


6 fill in the chart nucleic acids
6) Fill in the chart: variablesNucleic Acids



8 draw label color an animal cell

vacuole fill in the test results.

ribosomes

mitochondria

nucleus

8) Draw, Label, & Color an Animal Cell

Plasma membrane/

cell membrane


8 draw label color plant cell
8) Draw, Label, & Color Plant Cell fill in the test results.

Cell wall

(cellulose)

nucleus

vacuole

Plasma/cell

membrane

ribosomes

chloroplast

mitochondria


8 organelle function analogy chart
8) Organelle function & analogy chart fill in the test results.


9 which cells would have more mitochondria fat cells or muscle cells why
9) Which cells would have more mitochondria – fat cells or muscle cells? Why?

  • Muscle cells – they are more active; need more ATP; perform more active transport (needs ATP)

Highly-folded membrane=

increased surface area


10 which cells would have more chloroplasts stem leaf or root cells why
10) Which cells would have more chloroplasts – stem, leaf, or root cells? Why?

  • Leaf cells – they are the main photosynthetic organs; designed & positioned to collect maximum sunlight (to make glucose)


11) Fill in the Venn diagram comparing Prokaryotic and Eukaryotic cells in terms of size, chromosome structure, organelles, and types of organisms.

Prokaryotic

Eukaryotic

*Much larger

*Many chromosomes

*Nucleus

*Membrane-bound

organelles

(mitochondria,

vacuoles,

chloroplast)

*Plants, animals, protists, fungi

*Very small

*One chromosome

*Plasmid

*No nucleus

*No membrane-bound

organelles,

*Bacteria

Ribosomes

Cytoplasm

Cell membrane

Flagella

Cell wall?


  • 12) Eukaryotic cells in terms of From smallest to largest, fill in levels of cellular hierarchy:Cells  Tissues  Organs  Organ Systems  Organism


13 how do cells communicate
13) How do cells communicate? Eukaryotic cells in terms of

4 Ways:

  • 1) Direct contact:

    protein receptors

  • 2) Short-range

    signals: proteins

  • 3) Long-range

    signals: hormones

  • 4) Complex: chemical

    & electrical signals


14 why do cells need to maintain homeostasis
14) Why do cells need to maintain homeostasis? Eukaryotic cells in terms of

  • Cells need a stable environment to support enzyme activity

    15) How do cells maintain homeostasis in:

    • pH – buffers decrease impact of change

    • temperature – bodies shiver, pant, sweat

    • blood glucose levels – insulin increases absorption of glucose after meals

    • water balance – water follows concentration gradient – seeks equilibrium, moves by osmosis from high to low concentration


16 why is water important to cells
16) Why is water important to cells? Eukaryotic cells in terms of

  • It gains & loses heat very slowly

  • Dissolves & transports nutrients

  • Helps body eliminate wastes from cells

  • Lubricates joints & acts as shock absorber


17 define active transport passive transport diffusion osmosis semi permeable membrane
17) Define: Active Transport, Passive Transport, Diffusion, Osmosis, Semi-permeable membrane

  • Active transport: Requires energy & transport protein. Moves materials against concentration gradient (lowhigh)

  • Passive transport:No energy; moves materials with concentration gradient (highlow)

  • Diffusion: Random particle movement; passive

  • Osmosis:Water movement; passive

  • Semi-permeable membrane: allows some materials to pass


18 draw describe a situation in which water would move into a cell by osmosis
18) Draw & Describe a situation in which water would move Diffusion, Osmosis, Semi-permeable membraneinto a cell by osmosis.

Water moving in

Red blood cell in distilled water

Water moves in 

Cell swells


19 draw describe a situation in which water would move out of a cell by osmosis
19) Draw & Describe a situation in which water would move Diffusion, Osmosis, Semi-permeable membraneout of a cell by osmosis.

Water moving out

80% water

90% water

Red blood cell in strong sugar/salt water

Salt/sugar Sucks! the H2O out = cell shrinks


20 how is atp made and used in the cell
20) How is ATP made and used in the cell? Diffusion, Osmosis, Semi-permeable membrane

  • Cellular respiration produces ATP by breaking down glucose to release energy

  • Happens in the mitochondria

  • Used in

    • Active transport, mitosis, meiosis…


21 draw label the cycle from atp to adp
21) Draw & Label the cycle from ATP to ADP. Diffusion, Osmosis, Semi-permeable membrane

ATP - Adenosine Triphosphate

Releasing

energy

Storing

energy

ADP - Adenosine Diphosphate


22 what are enzymes
22) What are Diffusion, Osmosis, Semi-permeable membraneenzymes?

  • Proteins that control the rate of chemical reactions in cells; end in –ase (ex. Lactase, sucrase, amylase)

    • They are Catalysts = reusable

  • 23) What is their importance in biological processes?

    • They start & speed up chemical reactions that otherwise would take too long & interrupt homeostasis

  • 24) Explain what is meant by “they are re-usable and specific.”

    • They are not used up in reactions, so they can be used again & again

    • They are substrate-specific (each enzyme’s active site has a specific shape that only fits a certain substrate=substance the enzyme breaks down or assembles


25 what affects enzyme activity
25) What affects enzyme activity? Diffusion, Osmosis, Semi-permeable membrane

  • pH – enzymes in stomach work best in acidic (1.5-2) pH

  • Temperature – enzymes in humans work best around 98.6 degrees F

    • In some chemosynthetic bacteria, around 700 degrees Celsius

  • Explain the term denature.

    • Enzyme’s active site becomes deformed so that it can no longer bind to its substrate


27 label the diagram

Substrate broken Diffusion, Osmosis, Semi-permeable membrane

Into products

27) Label the diagram:

Substrate

Active

site

Enzyme binding

with substrate

Enzyme ready

To be used again

Enzyme:

B, C, D


28 what are the main differences between aerobic and anaerobic respiration
28) What are the main differences between aerobic and anaerobic respiration?

  • A) Aerobic – uses oxygen (O2)

    • much more effective at making ATP

    • Happens in the mitochondria

  • B) Anaerobic – NO O2!!

    • Very ineffective

  • What is alcoholic fermentation? What are the products? What types of cells do this?

    • Anaerobic process, happens when plant or fungal cells have no O2

    • produces CO2, alcohol, & a little ATP


30) What type of fermentation might be used in your own muscle cells when they do not get enough oxygen? What might this cause?

  • Lactic acid fermentation (anaerobic)

  • Causes muscle cramps

    31) What type of fermentation does

    yeast use? What might it produce?

  • Alcoholic fermentation (anaerobic)

  • Produces alcohol, CO2, and a little ATP


32) Equation for Cellular Respiration: muscle cells when they do not get enough oxygen? What might this cause?

O2 + C6H12O6 CO2 + H2O

ReactantsProducts

oxygen carbon dioxide

glucose water

ATP

33) What is chemosynthesis? Where might it be used?

converting chemical energy into glucose; places with no sunlight

34) Equation for Photosynthesis:

CO2 + H2O  O2 + C6H12O6

ReactantsSunlightProducts

carbon dioxide oxygen

water glucose


35 describe the role of photosynthesis and cellular respiration in the carbon cycle

Photosynthesis muscle cells when they do not get enough oxygen? What might this cause?

Pulls CO2 out of atmosphere

uses it as a reactant

Decreases global warming

Who does it?

Plants, plant-like protists, algae

Where: chloroplast

Cellular respiration

Releases CO2 into atmosphere

CO2 is a product

Who does it?

ALL living things

Plants, plant-like protists, fungi, animals, bacteria…

Where: mitochondria

35) Describe the role of photosynthesis and cellular respiration in the carbon cycle.


H muscle cells when they do not get enough oxygen? What might this cause?

T

A

P

P

D

D

H

C

G

P

P

D

D

  • Describe the structure of DNA. Who discovered this structure?

    • Double helix, Double stranded

    • Watson & Crick

      37) Draw & label a DNA strand 2 nucleotides long.

H

H


38) Name the nitrogenous bases in DNA and what each pairs with.

  • Adenine (A) pairs with Thymine (T)

  • Cytosine (C) pairs with Guanine (G)

    China Grove

    is where it’s

    AT

    39) What type of bond is formed between the bases in DNA? Why is it important?

    Weak Hydrogen bonds

    Unzip easily for DNA replication & transcription


40) a. Describe the structure of RNA. with.

  • Single stranded; simple sugar : ribose; has U (Uracil) instead of T

    b. What is the role of mRNA?

  • Take message from DNA in nucleus to ribosome; it is single-stranded so it can leave through nuclear pore

    c. What is the role of tRNA?

  • Like a Truck bringing supplies (amino acids) to the factory (ribosome) so proteins can be assembled

  • What base is found in RNA that is not found in DNA? What does it correspond to?

    • Uracil = corresponds to Adenine

    • Uracil replaces Thymine


  • 42) Why is DNA Replication considered semi-conservative? with.

    • Makes 2 new strands (half new & half original)

      43) What are 3 main differences between DNA and RNA:

    • A. DNA: double-stranded; RNA:single-stranded

    • B. DNA sugar: deoxyribose; RNA sugar: ribose

    • C. DNA has T; RNA has U

      44) When in the cell cycle does DNA replication occur? Where in the cell does it happen?

    • During Interphase (before mitosis or meiosis)

    • Happens in the nucleus


    45) What is with.Transcription and where does it happen?

    • Double-stranded DNA -> single-stranded mRNA

    • Happens in the nucleus

      46) What is Translation and where does it happen?

    • mRNA goes to ribosome; tRNA brings amino acids to ribosome; proteins are synthesized (made/assembled)

      47) What is a codon?

    • 3 nitrogen bases = 1 amino acid


    alanine with.

    AA

    Delivery

    tRNA

    tRNA

    48) Draw an animal cell and show the processes starting with DNA and finishing with protein synthesis.

    amino acid

    tRNA bringing

    amino acid to ribosome

    Translation

    protein

    ribosome

    Product:

    ala

    val

    tyr

    peptide bonds

    mRNA

    Transcription

    DNA

    nucleus


    49) Use this original DNA strand to make a complementary DNA strand.

    Original: TAC CGA CCT GGG TAT ATG ACT

    Complementary: ATG GCT GGA CCC ATA TAC TGA

    50) Use the original DNA above to make an mRNA strand:

    Original: TAC CGA CCT GGG TAT ATG ACT

    mRNA: AUG GCU GGA CCC AUA UAC UGA


    51 use the mrna strand to make a polypeptide chain p 292
    51) Use the strand.mRNA strand to make a polypeptide chain. p.292

    mRNA: AUG GCU GGA CCC AUA UAC UGA

    Polypeptide

    Chain:

    Met Ala Gly Pro Ile Tyr Stop


    52) strand.Define cancer. Uncontrolled cell division caused by gene mutation

    What causes it? Over- or underproduction, or production of proteins at the wrong times

    Give examples of 3 types of cancer & explain their known causes.

    • Skin cancer – UV rays from sun (hole in ozone layer)

    • Mouth/throat cancer – chewing/dipping/smoking tobacco

    • Breast cancer – genetic predisposition (altered BRCA1 or BRCA2 genes)


    53 compare contrast mitosis meiosis using a venn diagram
    53) Compare & contrast mitosis & meiosis strand.using a Venn diagram.

    Mitosis

    Meiosis

    =reduction

    division

    *sexual

    *asexual

    *Provides genetic

    variation

    from

    -crossing over

    -independent

    assortment

    *Produces identical

    daughter cells

    *cell division

    *somatic

    (body) cells

    *Prophase

    Metaphase

    Anaphase

    Telophase

    *1 division

    *Diploid=2n

    *gametes (sex cells)

    Males:sperm

    Females:ovules

    *Necessary to

    complete cycle

    of life

    *cloning

    *regeneration

    *2 divisions

    *copy

    *haploid=n

    *budding

    *so a species can survive in changing environment

    *so organism can grow


    54 put the stages of mitosis in order label what is happening in each stage
    54) Put the stages of mitosis in order. Label what is happening in each stage.

    3rd:

    chromosomes separate at centromeres, begin to move to poles

    2nd:

    chromosomes line up at equator

    4th: chromosomes move

    toward poles;

    cell begins to pinch

    apart

    1st: nuclear envelope dissolves; centrioles appear; chromatin coils up = chromosomes

    Remember: puppy PMAT!


    55) Define: happening in each stage.

    a. Diploid: 2n; has 2 sets of chromosomes

    b. Haploid: n; has 1 set of chromosomes

    56)a. What is crossing over? Exchange of genetic material in meiosis

    b. When does crossing over occur? During Prophase I of meiosis

    c. What’s the benefit of crossing over? Genetic variation=survival of the species


    57) Define Independent Assortment. happening in each stage.Alleles for different traits are inherited separately – not linked together

    How does it increase variation? New genetic combinations

    This diagram shows a diploid cell with two pairs of homologous chromosomes. Due to independent assortment, what is the possible genetic makeup of gametes produced?

    ST, St, sT, st

    (find all possible combinations of letters)

    A B

    a b


    58) What is a gene mutation? happening in each stage.Any change in DNA

    Define and give an example of each (with before and after mutation). Before After

    Point mutation: substituting one N base for another

    GGA TCG GGG TCG

    Frameshift mutation: inserting or deleting one N base; changes entire strand from that point

    GGA TCG GGA TAC G

    How do mutations increase variation? Allows for genetic diversity=raw material for natural selection


    59) What is segregation of alleles? happening in each stage.Alleles separate during gamete formation & randomly unite during fertilization

    How does it increase variation? Get more different combinations of alleles

    60) How can reproductive variations benefit a species?

    More variations = More chances species will survive during in a changing env.


    61) Define nondisjunction. happening in each stage.Failure of chromosomes to separate during meiosis

    What does it cause? Trisomy 21 = 3 chromosomes at pair 21 (down syndrome)

    62) Define fertilization. Sperm & egg fuse together.


    63) Define: happening in each stage.

    • Dominant – masks recessive trait

    • Recessive –is masked by dominant trait; only expressed if genotype is homozygous recessive (two little letters)

    • *Homozygous – two of the same alleles;

      2 dominant alleles: TT 2 recessive alleles: tt

    • *Heterozygous – 2 different alleles;

      1 dom. & 1 rec.: Tt

    • Genotype – organism’s genes: Tt or TT or tt

    • Phenotype – physical expression of genes; tall or short


    63 cont
    #63 cont. happening in each stage.

    • Test Cross – cross unknown genotype w/ known genotype (homozygous recessive)

    • Co-dominance – both alleles are dominant; use two different letters: B=Black feathers W=White feathers; **checkered chicken

    • Incomplete dominance – neither allele is dominant; heterozygous is mixture, intermediate of both traits; use same letters, one with prime (‘):

      LL=long L’L’=short, LL’=medium

    • Sex-linked – gene carried on X chromosome;

    • Autosomal – gene is found on chromosome pairs #1-22 (anything but sex chromosomes)


    I I happening in each stage.

    I i

    I i

    I i

    I I

    I i

    i

    i

    I i

    i i

    I i

    I i

    P1Cross

    F1Cross

    64) Using the diagram, what is the:

    • a. Phenotype of the F1 generation? inflated

    • b. Genotypic ratio of the F2 generation?

    Key:

    I:Inflated

    i:constricted

    I

    i

    25% II, 50% Ii, 25% ii


    T t happening in each stage.

    TT

    Tt

    T

    t

    Tt

    tt

    Tt

    (appearance)

    65) Two heterozygous tall pea plants are crossed. If tall is dominant to short, what are the expected phenotypic results?

    Key:

    T: Tall

    t: short

    3 tall: 1 short


    I happening in each stage.A IA

    IAIA

    IAIA

    IAIB

    IAIA

    IA

    IB

    IA

    IB

    IBIB

    IAIB

    IAIB

    IAIB

    Mr. Jones & Mrs. Jones

    66) Blood Type question (Multiple Alleles): Mr. Jones has blood type A and Mrs. Jones has blood type AB. What is the chance that they will have a child with blood type A if both of Mr. Jones’s parents were AB?

    50% chance

    Key:

    Mr. Jones: A (IAIA or IAi)

    Mrs. Jones: AB (IAIB)

    IA IB

    Mr. Jones’ parents


    I happening in each stage.B i

    IAi

    IAIB

    IA

    i

    ii

    IBi

    67) Is it possible to have a child with type O blood if one parent is type A and the other is type B? Use a punnett square to prove your answer.

    Yes it is


    X happening in each stage.nY

    XNXn

    XN Y

    XN

    Xn

    XnXn

    Xn Y

    68) Color blindness is a sex-linked recessive trait. A mother with normal color vision and a colorblind father have a colorblind daughter. What does this conclude about the mother?

    Key:

    N: Normal vision

    n: colorblind

    Colorblind daughter

    The mother has to be a carrier (heterozygous for colorblindness)


    N n happening in each stage.

    NN

    Nn

    N

    n

    Nn

    nn

    69) Two healthy parents have a child with cystic fibrosis. Use a punnett square to explain how this happened. What are the chances they will have another child with cystic fibrosis?

    Key:

    N: Normal

    n: cystic fibrosis

    Child with cystic fibrosis

    25% chance of having another child with cystic fibrosis


    h h happening in each stage.

    Hh

    Hh

    H

    h

    hh

    hh

    hh

    Hh

    70) A woman is diagnosed to be heterozygous for Huntington’s. Her husband is healthy. What are the chances their children have the disorder?

    Hh or HH

    Key

    H: Huntington’s

    h: normal

    50% chance


    N n happening in each stage.

    Nn

    nn

    n

    n

    Nn

    nn

    Nn

    nn

    71) A man is resistant to malaria. His wife has sickle cell anemia. What are the chances their children could be resistant to malaria?

    Nn

    Key

    N: Normal

    n: sickle cell anemia

    50% chance


    B W happening in each stage.

    BB

    BW

    B

    W

    BW

    WW

    72) In chickens, feather color is co-dominant. One allele codes for black and another allele codes for white. The heterozygous bird is checkered. Cross two checkered birds. What is the phenotypic ratio that results?

    Key:

    BB: Black feathers

    WW: White feathers

    BW: checkered chicken

    25% Black: 50% checkered: 25% white


    R R happening in each stage.

    RR’

    RR’

    R’

    R’

    RR’

    RR’

    73) In snapdragons, flower color is inherited by incomplete dominance. There is a red allele, a white allele, and the heterozygous is pink. What is the phenotypic ratio if you cross a white flower with a red flower?

    Key:

    RR: red

    R’R’: white

    RR’: pink

    100% pink


    X happening in each stage.NY

    74) Use the pedigree showing inheritance of hemophilia to answer the following questions:

    *Remember: you may have to complete a Punnett square to answer the question correctly.

    a. What is the genotype of individual I-1?

    b. What is the genotype of individual I-2?

    c. What is the phenotype of individual III-1? What is their genotype?

    XNXn

    Has hemophilia

    XnY


    B B happening in each stage.

    B b

    Bb

    Bb

    Bb

    bb

    b

    b

    b

    b

    Bb

    Bb

    Bb

    bb

    75) Black is dominant in rabbit fur color. Suggest a test cross to determine a black rabbit’s genotype if mated with a white rabbit, it has 14 offspring: 7 black & 7 white.

    Key:

    B:Black fur

    b:white fur

    Test Cross: cross a known:

    (homozygous recessive = white fur)

    with the unknown; look at offspring

    ½ of offspring are black; ½ are white

    Genotype of unknown black must be Bb

    All black offspring


    76) What is a polygenic trait? happening in each stage.Determined by more than one gene; creates a bell curve

    Give three examples. Height, skin color, eye color

    77) Describe Gregor Mendel’s pea plant experiments. Tall pea + short pea = all tall (principle of dominance)

    78) Why are males more likely to express a sex-linked disorder? Have only 1 X chromosome; if male gets 1 allele for disorder has no way to mask it


    81) What are the uses of DNA fingerprinting? happening in each stage. Forensics: solve crimes, convict criminals, overturn wrongful convictions; wildlife conservation: catch poachers; I.D. parents


    82) What is a karyotype and what is it used for? happening in each stage.picture of chromosomes

    **Can see gender & chromosomal disorders (down syndrome)


    83) What is gene therapy? happening in each stage.Absent or faulty gene replaced by normal, working gene

    84) How can genetic engineering allow us to produce human insulin using bacteria? Isolate insulin gene; insert into bacteria; bacteria clone gene


    85) What is a transgenic organism? Give an example. happening in each stage. organism containing genes from other species; Insert recombinant DNA into host genome

    (red cat has

    genes from

    bioluminescent

    jellyfish,

    Aequoria victoria)


    86) What is cloning? happening in each stage.making a genetically identical copy


    87) What is gel electrophoresis? Briefly explain the steps involved. A way to sort DNA fragments by size

    1.Cut DNA w/ restriction-enzyme. Put

    fragments into gel.

    3. Result: DNA fingerprint

    2. Add electricity.

    Shorter fragments move farther

    p. 346

    http://www.bio.miami.edu/~cmallery/150/gene/c7.20.8.electrophoresis.jpg


    88) a. What is this image? involved. A DNA fingerprint

    b. How was it prepared? gel electrophoresis

    c. Based on the evidence (Evs), who is guilty – suspect 1 or 2? Suspect 2


    89) What problems could be associated with genetically modified organisms? unintended gene transfer to native species; unknown effects on human health; economic issues (poor farmers can’t afford GM seed)

    90) What is the Human Genome Project? Complete mapping of all genes in human genome

    Why is it useful? To ID people with genetic disorders early (prevention/treatment); find cures for disorders


    91) Contrast abiogenesis (spontaneous generation) and biogenesis. Abiogenesis:life appears from non-living things; Biogenesis: life comes from life

    92) What did Louis Pasteur contribute to our understanding of the origins of life? Disproved spontaneous generation of microorganisms (broth experiments)


    93) Explain Miller and Urey’s hypothesis – biogenesis. created building blocks for life in lab (amino acids)

    94) How did early Earth’s conditions contribute to the development of life? No free O2 = first organisms anaerobic & simple (prokaryotic)

    95) Explain the evolution of eukaryotic cells and aerobic organisms. (Endosymbiont Theory) evolution of prokaryotic cells to eukaryotic cells

    (aerobic bacteriamitochondria; cyanobacteriachloroplast)


    96) What can you infer from a fossil record? biogenesis. Evolutionary relationship

    Where do you find the oldest/youngest fossils? Oldest in bottom layer; youngest on top

    97) Which is more accurate – relative dating or radiometric dating? Explain each concept briefly. Relative dating uses rock layers; Radiometric: uses radioactive isotopes

    Which is referred to as absolute dating? Radiometric dating


    98) Explain what scientists could conclude from this diagram.

    They all evolved from a common ancestor because of similar arrangement of bones.


    99) Define Natural Selection diagram. – organisms best suited for their environment survive, reproduce, pass on favorable genes

    100) How are variation and natural selection related? Variations are raw material for natural selection to happen

    101) What is the role of geographic isolation in speciation? Physical barrier separating individuals of a population; they no longer interbreed = produce two species

    102) How does the environment select adaptations? Individuals with adaptations best suited to environment survive, reproduce, pass on genes

    103) Define the following and explain how they are related to natural selection:

    * Pesticide Resistance – organisms with resistant genes survive, reproduce, pass on genes

    * Antibiotic Resistance – bacteria with resistant genes survive, multiply, pass on genes (MRSA, TB)


    104) How does our modern classification system show the evolutionary relationship among organisms? Phylogenetic systematics aim to group species in larger categories that reflect evolutionary relationships (based on DNA analysis)

    105) Based on the cladogram, which are more closely related – bacteria and marsupials or birds and marsupials?


    106) Originally there were only evolutionary relationship among organisms?two kingdoms (plants and animals), now there are 6 kingdoms.


    More similar evolutionary relationship among organisms?

    Domain

    Kingdom

    Phylum

    Class

    Order

    Family

    Genus

    Species

    107) Who came up with the two word naming system? Carolus Linnaeus

    What is this naming system called?

    Binomial nomenclature

    2-name name- system

    108) Name the 8 levels of our current classification system starting from largest (most similarities) to smallest (most specific).

    More specific

    Desperate

    King

    Phillip

    Came

    Over

    For

    Good Spaghetti


    109) How has our knowledge of evolutionary relationships been affected by our understanding of:

    • DNA analysis- the more similar DNA sequences of 2 species, the more recently they shared common ancestor;much more reliable than physical similarities (African vultures/American vultures/Stork)

    • Amino Acid Analysis- Compare similarities in protein sequences(cytochrome c=cell respiration; Hox genes=embryo)


    112) Animal-like (unicellular) Protists: Protozoans: been affected by our understanding of:depend on diffusion & osmosis to maintain homeostasis; most reproduce asexually (mitosis); under stress some do conjugation

    • Amoeba-pseudopod aids movement, food capture;

    • Paramecium – cilia move it, usher food into mouth;

    • Euglena – moves with flagellum; has red eye spot & chloroplasts, moves toward light

      113) Animals: multicellular, eukaryotic, heterotrophic

      a. Chordata –

      i. Mammals: have hair, mammary glands, internal fertilization, & are endothermic

      ii. Amphibians: “double life”; spend part of their life in water and part on land; ectothermic; external fertilization; go through metamorphosis


    113) been affected by our understanding of:

    b) Arthropoda- “jointed appendages”

    * Insects – 3 body segments; 6 legs; exoskeleton made of chitin; mostly internal fertilization; open circulation system

    c) Annelida- Segmented worms; breathe & excrete wastes through skin; bilateral symmetry; also use nephridia to excrete waste


    114) Plants: been affected by our understanding of:multicellular; autotrophic; eukaryotic

    a) Nonvascular plants: Mosses- do not contain vascular tissue (xylem & phloem); must grow near water; reproduce with spores

    b) Gymnosperms (conifers) – “naked seed”; seeds are enclosed in cones; have needles instead of leaves; have vascular tissues (xylem & phloem)

    c) Angiosperms- flowering plants; produce seeds enclosed in fruits; vascular tissue

    “Xy” goes high

    “Phlo” goes low


    115) Why are the highly folded structures of mitochondria, intestines, and mammal brains significant?

    Increased surface area=increased activity (helps maintain homeostasis)

    116) What adaptations are necessary for plant life on land?

    Vascular tissue, pollination must occur; seeds/spores dispersed by abiotic/biotic factors (wind/water/animals);


    117) List the main functions of these plant parts and name adaptations for survival:

    • Roots – anchor plant; prevent soil erosion

      • i. How do mycorrhizae aid in root function? Mutualistic relationships w/ fungus give roots increased surface area to help absorb more nutrients & water

    • Stems – structure, support

    • Leaves – Photosynthesis!! Increased surface area for light absorption; make glucose for plant

      118) What are xylem and phloem? Vascular tissue

      What do they do? Xylem moves water up from roots to leaves;Phloem moves sugar from leaves to roots

    “Xy” goes high

    “Phlo” goes low


    119) Discuss the relationship between angiosperms and their pollinators. Co-evolution; pollinator’s nectar-gathering structures match flowers to ensure pollination success

    120) What adaptations do plants have to ensure reproductive success? pollen/attractive flower colors, fragrance, fruit, open time, nectar amount


    121) Explain the result of mutations in viruses and other microorganisms, how does this benefit these disease-causing organisms?Mutations are driving force of evolution; organisms can evolve resistance

    122) Describe the following disease causing pathogens. Are they a virus or bacteria? Which should be treated with antibiotics?

    a. HIV – virus; causes AIDS

    b. Influenza – virus; causes flu

    c. Small Pox – virus

    d. Streptococcus (strep throat) – bacteria; treat w/ antibiotics (the only living pathogen on this slide)


    123) Describe how genetics and the environment affect: microorganisms, how does this benefit these disease-causing organisms?

    a. Sickle cell anemia and malaria: carriers resistant to malaria

    b. Lung/mouth cancer & tobacco use tobacco causes mutations cancer

    • Skin cancer, vitamin D, folic acid, and sun exposure – overexposure to UV causes mutations; folic acid helps repair skin damage;moderate sun exposure aids in vit. D absorption;


    d. Diabetes (diet/exercise and genes) – microorganisms, how does this benefit these disease-causing organisms?

    Type I is genetic

    Type II: can be genetically predisposed, BUT proper diet/exercise can help treat

    e. PKU and diet – genetic disorder diagnosed at birth; proper diet prevents mental retardation


    124) Explain the role of T-cells and B-cells microorganisms, how does this benefit these disease-causing organisms? – T cells attack & kill; B cells make antibodies; both make memory cells to recognize pathogens

    125) Passive vs. Active Immunity – passive-get from mother at birth; temporary; active-encounter antigens, antibodies are formed in response

    126) What are vaccines and how do they work?Weakened form of pathogen; causes antibody & memory cell production to fight off future invasions


    127) Explain malaria’s microorganisms, how does this benefit these disease-causing organisms?vector, symptoms, treatments, and causal organism.

    Vector: mosquito

    Symptoms: chills, fever, aches, fatigue

    Treatments: used to be Chloroquine, but parasite evolved resistance

    Causal organism: protist: Plasmodium


    128) Explain the effects of the following toxins in the environment:

    a. Lead – causes learning disabilities (ADD); birth defects

    b. Mercury – biomagnification; birth defects from infected fish


    131) Define the following innate behaviors and taxes: environment:

    a. Phototaxis (positive/negative) – positive: Euglenas move toward light; negative: squinting in bright light; rolly pollies run away when turn over log

    b. Suckling – innate behavior to find nourishment immediately following birth

    c. Migration – seasonal movement for breeding/feeding grounds

    d. Estivation – decreased metabolic activity thru drought

    e. Hibernation – decreased metabolic activity thru winter


    132) Define the Types of Learned Behavior environment:

    a. Habituation- get used to repetitive behavior b/c no negative consequence

    b. Imprinting – forms a permanent attachment to mother upon hatching; helps recognize appropriate mate

    c. Classical Conditioning- Pavlov’s dogs; learning by association

    d. Trial and Error- random; proper response is rewarded


    133)Define the following social behaviors: environment:

    • Communication with pheromones-chemical signals send messages about mating/finding food

    • Courtship Dances and behaviors- ensures male with best genes mates; elaborate displays, esp. in birds

      c. Territorial Defense- males fight males of same species; strongest, best adapted male gets to mate


    134) Define environment:

    a) Phototropism – leaves/stems bend toward light (positive response)

    b) Thigmotropism – response to touch; causes vining

    c) geotropism/gravitropism – leaves/stems respond negatively to gravity pull; roots respond positively


    Organism environment:

    Population

    Community

    Ecosystem

    Biome

    Biosphere

    135) List the levels of ecological organization from smallest to largest:

    *Single of a species

    *Group of organisms,

    same species

    *All living things

    in an area

    *Biotic & abiotic

    factors in an area

    *Regions of

    similar habitat

    *Portion of earth

    where all life is


    136) What is a symbiotic relationship? environment:Permanent relationship between organisms

    Define and give an example of the following symbiotic relationships.

    • Mutualism - both benefit

      ex: clownfish/anemone

    • Commensalism- one benefits, one neither hurt nor helped

      ex: barnacles on a whale

    • Parasitism- host is hurt; parasite benefits

      ex: fleas on a dog

      d. What type of symbiosis could Nitrogen fixation represent? Explain. Mutualism: nitrogen-fixing bacteria on plant roots get glucose, plant gets N in a form it can absorb


    137) What is a limiting factor? What are some examples? environment:keeps population near carrying capacity

    examples: food, disease, predators, space


    138) Carrying capacity = environment:max # of organisms environment can support

    Carrying capacity

    # of organisms

    Exponential

    growth

    Time


    139) What are abiotic and biotic factors? environment:

    abiotic = nonliving factors

    ex: air currents, temperature, light, soil, moisture; pH

    biotic factors = living factors

    How are they related?

    interdependent in ecosystems

    Why are they important in ecosystems?

    abiotic factors = shelter, resources needed for survival

    biotic factors = all organisms depend on others for food, shelter, reproduction and/or protection


    140) What is a food chain? environment:

    linear diagram showing feeding relationship

    Draw a food chain including the following organisms: heron, minnow, plankton Plankton  minnow  heron

    141) How much energy is passed from one trophic level to the next?10%

    What happens to the rest?

    lost as heat

    Draw & label a

    trophic pyramid.


    2°C, 3°C, Carn. environment:

    2°C, 3°C, Carn.

    3°C, Carn.

    1°C, Herb.

    1°C, Herb.

    2°C, Carn.

    1°C,Herb.

    1°C, Herb.

    Producer

    Producer


    142 cont.) What would happen if grasshoppers were removed from the food web by insecticides?Producers increase; Frog population will decrease

    Where would you find bacteria in the food web & what is its primary role? At all levels; decomposer

    Where would you find fungi in the food web & what is its primary role? At all levels; decomposer

    143) What are some factors that influence birth and death rates in the human population?Disease, sanitation, availability of resources, education of women


    What does this graph depict about historical population growth?

    Pre-Industrial revolution = slow growth

    Post-Industrial revolution = exponential growth

    What does it indicate about possible future growth? Continue to grow exponentially


    144) What effects do the following have on the environment? growth?

    • Human population size?

      reduce availability of resources

    • Human Population density

      resources are quickly used & polluted; disease spreads quickly

    • Resource use?

      Future generations will have fewer

      resources available to them


    145) How have humans impacted the ecosystems through: growth?

    • Acid rain: Caused by emissions (from automobile exhaust & coal-burning factories). Can damage trees and alter water ecosystems.

    • Habitat destruction: populations forced to move or die due to humans destroying or degrading habitats

    • Introduced non-native species: competition for food and other resources; rapid growth b/c no natural predators


    146) Climate change factors: growth?

    • Define greenhouse effect: CO2 traps heat in atmosphere, global temp increase

      • How does the carbon cycle impact the greenhouse effect? Photosynthesis removes CO2 from atm.

        Plants & Animals release CO2 as a waste product of respiration

        ii. How have humans impacted the carbon cycle? Increased carbon emissions.

        Deforestation = less carbon removed thru photosynthesis


    146) growth?

    • How do natural environmental processes impact the greenhouse effect? Water vapor is greenhouse gas with most volume

    • What is global warming and what causes it? Overall increase in the average global temperature; caused by too many greenhouse gases (CO2)


    147) How does human resource use cause deforestation? growth?Cut down trees for building materials, clear land for development

    What impact does deforestation have?

    Habitat loss = Biodiversity loss

    Discuss habitat fragmentation.

    Separation of wilderness areas from other wilderness

    Can cause edge effects; extinction; difficult for animals to find food/mates; overall species diversity declines


    148) Pesticides: growth?

    a. What are some biological alternatives to chemical pesticides?Biological controls: natural predators (ladybugs, praying mantis, spiders) eat pests

    What are the pros and cons?

    Pro = reduction of harmful chemicals in our food/environment; beneficial organisms are not affected

    Cons = food is more expensive


    148) cont. growth?

    • What is DDT and what is its effect on the environment? Pesticide now banned in the US. Harmful to many species & bioaccumulates. Has caused decline of bird populations.

      c. Explain bioaccumulation and biomagnification.

      Bioaccumulation – harmful chemicals build up in fat tissues

      Biomagnification – organisms at the top of the food chain/web have more of the harmful chemical in their bodies


    149) Explain ozone depletion. growth?

    Ozone molecules are broken apart; allows greater # of harmful UV rays to penetrate our environment

    What causes it and why is it a problem?

    Chlorofluorocarbons (CFCs)

    Increased UV causes skin mutations


    150) Give examples of sustainable practices and stewardship. growth?

    Habitat preservation (Yellowstone), recycling, reintroduction programs, ecotourism, laws to protect endangered species


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