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Grayslake North Science and

Grayslake North Science and. First Semester Biology is quick and easy The Nature of Science (Just like Driver’s ed.) I – Identify a problem (There is a car in my lane…) P – Make a prediction/ hypothesis (If it keeps coming then…) D – Decide what to do (Test hypothesis)

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Grayslake North Science and

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  1. Grayslake North Science and

  2. First Semester Biology is quick and easy • The Nature of Science (Just like Driver’s ed.) • I – Identify a problem (There is a car in my lane…) • P – Make a prediction/ hypothesis • (If it keeps coming then…) • D – Decide what to do (Test hypothesis) • E – Execute and Evaluate (Draw Conclusions) • You’ve only supported, NEVER proven a hypothesis

  3. Law • General principle, supported by substantial scientific evidence that is used to explain phenomena. • Confirmed over and over • Example: Global Warming • Supported by evidence and may explain a whole series of events. • Usually governs a single event or action • Thought to be universally true • Example: •  Law of Gravity Theory

  4. Independant Variable • The factor you, as the scientist, change in an experiment • “Manipulated Variable” • X-axis on the graph • Dependant Variable • The factor the scientist measures in response to the change in the independent variable • “Responding Variable” • Y-axis on the graph

  5. A more accurate diagram is a FOOD WEB A collection of food chains for an ECOSYSTEM Describes PREDATORS and PREY as well as their NICHES Arrows represent energy and biomass (living matter) Notice energy flows from bottom to top

  6. Succession – How an abandoned parking lot becomes a forest…in a few thousand years • Extinction – When endangered • organisms are gone • forever (Dinosaurs & Trilobites) • InvasiveSpecies – Organisms that do not belong (Asian Carp & Zebra Mussels) • BiologicalMagnification – Effects get worse as you move up the food chain (DDT & Eagles)

  7. Cells without a nucleus or membrane bound organelles • Example: Bacteria Prokaryotes

  8. Eukaryotes • Cells with a nucleus • and membrane • bound organelles • Example: Human cells, plant cells, animal cells

  9. Viruses: Non-Living Particle, not a cell. MUCH SMALLER then any living cell. Made of a protein coat and DNA or RNA. Can only be seen with an electron microscope. (SEM Image)

  10. Energy in = Energy Out • Photosynthesis = Cellular Respiration • CO2 + H2O + Light = C6H12O6 + O2 This guy used a lot of ATP!

  11. How does a six year old share • their froot loops? • Must be equal in numbers and colors • Line ‘em up and split ‘em • One for you, One for me

  12. Found in the Nucleus of ALL Eukaryotes • GATTACA matches with CTAATGT A = T & C = G

  13. Nucleotide DNA Amino Acid Gene Protein Chromosome

  14. Transcription: • Make a copy of • the DNA • Finish with mRNA • Leave Nucleus • Translation: • Attach to a Ribosome • Read codons • (3 N – Bases) • tRNA brings Amino Acids • Amino Acids form protein A = U & C = G

  15. Letters on the outside are gametes Genotype = The genes Phenotype = The Physical Traits A = Dominant Gene a = Recessive Gene AA = Homozygous Dominant Aa = Heterozygous (Dominant Phenotype) aa = Homozygous Recessive (Recessive Phenotype) Gender is determined this way as well!

  16. A Family Tree A Family Tree?

  17. Which moth gets eaten? • What does the surviving moth do? • What does its offspring look like? • Can the offspring choose its • appearance? Can you guide it?

  18. You’re a homo… a Homosapiens Kingdom:   Animalia       Phylum:   Chordata              Class:   Mammalia                     Order:   Primates                               Family:   Hominidae                                        Genus:   Homo                                                  Species:   sapiens

  19. Think of Day 2 like a common sense test! Give it a good shot! The difference between not meeting and meeting is as little as one correct answer.

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