bio 2-7-8-9

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Danielvu28
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140575
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bio 2-7-8-9
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2012-03-08 17:17:19
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bio
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bio 2-7-8-9
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  1. Explain how the water molecule is "polar".
    THE OXYGEN HEMISPHERE IS SLIGHTLY NEGATIVE AND THE HYDROGEN HEMISPHERE IS SLIGHTLY POSITIVE.
  2. How would you classify a cloudy mixture of cells in water?
    A suspension
  3. Be able to identify a reaction pathway that absorbs energy. This would apply to photosynthesis. The graph ramps upwards. See Figure 2-20 p. 51 (top graph)
    a
  4. What are three key functions of proteins?
    • THEY HELP TO FIGHT DISEASE (antibodies).
    • THEY CONTROL THE RATE OF REACTIONS (enzymes).
    • THEY MOVE SUBSTANCES INTO AND OUT OF CELLS (membrane channels & pumps)
  5. What are 3 key facts about enzymes?
    • ENZYMES ARE PROTEINS.
    • THE SHAPE OF THE ENZYME ALLOWS IT TO DO ITS JOB
    • ENZYMES WORK BEST AT A SPECIFIED ph
  6. Who are the prokayotes (These cells do NOT have a nucleus)?
    BACTERIA
  7. What is the function of mitochondria?
    To convert the chemical energy stored in food (ex. glucose) into usable energy (ATP)
  8. What is the function of the cell membrane?
    REGULATION OF THE MOVEMENT OF MATERIALS INTO AND OUT OF THE CELL
  9. What is the fate of a cell put into fresh water (similar to distilled water)?
    THE MOVEMENT OF WATER INTO THE CELL WILL BUILD INTERNAL OSMOTIC PRESSURE UNTIL THE CELL BURSTS
  10. How does glucose (a molecule too large to fit through the cracks in the membrane) get into the cell to begin glycolysis?
    FACILITATED DIFFUSION
  11. On a graphic of a chloroplast be able to identify a single thylakoid.
    a
  12. Why are most plants green?
    BECAUSE THEY REFLECT GREEN LIGHT; GREEN LIGHT IS NOT ABSORBED
  13. What are the products of photosynthesis?
    OXYGEN GAS & HIGH ENERGY SUGARS
  14. In Case A a burning candle is covered by a jar. In Case B a burning candle next to a green plant is covered by a jar. Why will the candle in Case B burn longer before it goes out?
    OXYGEN PROVIDED BY THE PLANT CAUSES THE CANDLE TO BURN LONGER.
  15. What is the function of NADP+ in photosynthesis?
    ELECTRON CARRIER
  16. What are the 3 parts of the ATP molecule?
    ADENINE, RIBOSE & THREE PHOSPHATE GROUPS
  17. How is energy released from ATP?
    WHEN A PHOSPHATE GROUP IS REMOVED
  18. Where do the LIR/Calvin Cycle occur?
    STROMA
  19. Where is the stroma?
    THE FLUID OUTSIDE OF THE THYLAKOIDS
  20. How are photosynthesis and cellular respiration linked?
    THE PRODUCTS OF PHTOTSYNTHESIS ARE THE REACTANTS/SUBSTRATES OF CELLULAR RESPIRATION
  21. What is the correct sequence of events in cellular respiration? Repeat after me…
    GLYCOLYSIS -> KREBS CYCLE -> ETC
  22. What is the substrate (starting molecule) for glycolysis?
    GLUCOSE
  23. What does it mean for a process to be "aerobic"
    IT REQUIRES OXYGEN
  24. What gas does the Kreb Cycle produce?
    CARBON DIOXIDE
  25. What are the substrates and products of the Krebs Cycle?
    PYRUVIC ACID YIELDS CARBON DIOXIDE
  26. Where is the ETC?
    INNER MITOCHONDRIAL MEMBRANE
  27. Which molecules pass high-energy electrons to the ETC?
    NADH & FADH2
  28. Approximately how many ATPs are made from one glucose?
    36
  29. What makes bread airy and spongy?
    ALCOHOLIC FERMENTATION

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