What does a biologist study ? the earth the weather c . living things d . only animals. Susie decided to test the effectiveness of 3 new fertilizers on her tomato plants. She decided to divide her garden into sections and apply a different fertilizer to each section.
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What does a biologist study?
c. living things
d. only animals
Susie decided to test the effectiveness of 3 new fertilizers on her tomato plants. She decided to divide her garden into sections and apply a different fertilizer to each section.
What part of Susie’s experiment would be the independent variable?
a. the growth of the plants
b. the amount of water
c. the amount of light given to each plant
d. the type of fertilizer given to each plant
A chloroplast can convert light, carbon
dioxide, and water into
a. vacuoles.c. proteins
b. sugard. fat
a. a cell membrane.
a. the reproduction of cells.
b. a state of biological balance.
c. the transport of proteins against a concentration gradient.
d. the process of molecules spreading out evenly across an environment.
Cells store energy when
a. the third phosphate group breaks off from an ATP molecule.
b. they break down sucrose to glucose and fructose.
c. a third phosphate group is bonded to an ADP molecule.
d. ions are released into the bloodstream
Which structure contains most of the cell’s DNA?
The cell shown is probably an animal cell because
it has mitochondria
it does not have a cell wall
it has a cell membrane
d. it does not have a nucleus
Osmosis is a process involving movement toward equilibrium. Pick from the following the situation the one that you wouldn't expect to undergo any osmosis.
a. a plant cell placed in plain distilled water b. a plant cell placed in salty water c. a plant cell placed in water with the same salt concentration as the cell d. a plant cell placed in sugar water
Concentration of solutes inside and outside the cell are equal when
a. the solution is isotonic.
b. the solution is hypotonic.
c. the solution is hypertonic.
d. the solution is isometric.
13. allows molecules to pass by diffusion - C
14. may help to identify the cell - A
Cellular respiration that requires oxygen is
c. alcoholic fermentation
d. lactic acid fermentation.
The main source of energy for living things is a 6-carbon sugar called
a. glucose.c. lactic acid.
b. ribose.d. deoxyribose.
How might an athlete know that lactic acid
fermentation has occurred in her muscles?
a. she is short of breathc. her muscles are sore
b. she is hungryd. she is thirsty
Which of the following equations best represents
a. C + O2 + H2O CO2 + HOH
b. 6CO2 + 6H2O C6H12O6 + 6O2
c. 6C + 6H2O C6H12O6
d. C6H12O6 6CO2 + 6H2O
Sequence the six diagrams in order from first to last.
a. E,C,F,A,D,B c. D,B,F,C,E,A
b. A,B,C,D,E,F d. D,A,F,C,E,B
If a body cell of a particular organism has 60
chromosomes, how many chromosomes would
each sex cell have?
a. 60c. 15
b. 30d. 120
Meiosis occurs in the formation of
a. body cells and sex cells.c. sex cells only.
b. body cells only.d. only body cells of prokaryotes.
Which of the following describes an organism
that has the genotype Bb?
a. homozygousc. inbred
b. heterozygousd. all of these
Any change in the DNA of an organism is called a:
a. mutationc. replication
b. transcriptiond. pedigree
If one side of a DNA molecule had the base
sequence AGTTCCACTTGA, which of the following
would represent the DNA sequence of that same
side in a new molecule if the original one is
a. AGTTCCACTTGAc. UCAAGGUGAACU
b. AGUUCCACUUGAd. TCAAGGTGAACT
Structure III represents a(n)
a. genec. codon
b. amino acidd. DNA molecule
29. The process illustrated in the diagram above is
a. translation.c. cell division.
b. replication.d. transcription.
TRUE / FALSEa = trueb = false
30. The vacuole in an animal cell is much larger than those of plant cells. F
31. In photosynthesis, light energy is used to break down water into hydrogen and oxygen. T
32. Plants require oxygen in order to perform photosynthesis. F
33. Individuals must exhibit a trait in order for it to appear in their offspring. F
The type of inheritance shown when a red-flowering plant is crossed with a white-flowering plant and only pink-flowering plants are produced is
a. inbreeding.c. codominance.
b. polygenic inheritance.d. incomplete dominance.
The diagram above represents a molecule of
a. tRNAc. glucose
b. mRNAd. DNA
Which of the following do the circles in the diagram represent?
a. ribosec. deoxyribose
b. phosphated. guanine
Which of the following is represented by the
figure on the diagram labeled “x”?
a. phosphatec. thymine
b. uracild. cytosine
When roan, (reddish-brown), cattle are mated, 25% of the offspring are red, 50% of the offspring are roan, and 25% are white. Upon examination, it can be seen that the coat of a roan cow consists of both red and white hairs. This trait is controlled by
a. multiple alleles.c. sex-linked genes.
b. codominant alleles.d. polygenic inheritance
Examine the graph below, which illustrates the frequency in types of skin pigmentation in humans. Another human trait that would show a similar inheritance pattern and frequency of distribution is _____.
Those components of Earth’s atmosphere which
absorb infrared radiation and trap heat are
a. ozonec. greenhouse gases
b. carbon offsetsd. CFC’s
On which of the following do the others most
a. producersc. consumers
b. herbivoresd. omnivores
Suppose that due to a change in climate, the amount of annual rainfall in a certain desert increases slightly. Which of the following might the desert environment become?
a. a tundrac. an estuary
b. a coral reefd. a grassland
Which of the following biomes has the most species of plants and animals?
a. temperate forestc. grassland
b. taigad. tropical rain forest
As matter and energy move from grasses to coyotes, the amount of available energy
a. decreases.c. stays the same.
b. increases.d. is totally depleted.
Energy flows from
a. coyotes to grasses.c. mice to cats.
b. cats to mice.d. coyotes to cats.
The tundra would best be characterized by
a. low temperatures and much vegetation.
b. low temperatures and little vegetation.
c. high temperature and much vegetation.
d. high temperature and little vegetation.
Which of the following is NOT a source of CO2 in the Earth’s atmosphere?
a. engines burning carbon-based fuels
b. volcanic eruptions
d nuclear power plants