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BIO 109 Lecture 2 Study Questions

Terms in this set (15)

What is ATP?
Adenosine Triphosphate - ENERGY - is required for active transport. (high energy molecule)
What is the difference between aerobic and anaerobic respiration?
aerobic: uses oxygen in cellular respiration (produces energy)
anaerobic: does NOT use oxygen (ethanol or lactate is produced)
What happens during the respiration of a molecule of glucose? How efficient is respiration?
yields CO2, H2O, and Energy

38% efficient (high percent)
Where does aerobic respiration primarily (2 of the 3 steps) take place (in what organelle)?
primarily takes place in the mitochondria (during krebs cycle)
Where does the first step occur?
in the cytosol
How much ATP is made per glucose molecule during respiration?
36 ATP
Why are plants green?
Chlorophyll reflects green light
Can you name the most important photosynthetic pigment found in plants? What are the other pigments called?
Chlorophyll A is the most important photosynthetic pigment. The other pigments are Chlorophyll B and Caroteniods (orange) Zanthophylls (yellow).
Can you name 3 Kingdoms of life that contain organisms that photosynthesize?
Plantae, Monera, Protista
What wavelengths of light (by color) are involved in photosynthesis?
Red and Blue
What happens during the light reactions in photosynthesis? What about the "dark reactions" aka the Calvin cycle?
Light reactions: H2O is broken down by sunlight and releases O2 and electrons which (electrons) then enter Calvin cycle to produce sugar. The Calvin cycle is indirectly dependent on light. CO2 converts with 6 turns into glucose then sucrose
What is the most abundant enzyme (and therefore, protein) on Earth?
Rubisco
What does Rubisco help do?
allows CO2 to convert into sugar
What are the reactants of photosynthesis? What are the products of it?
reactants: CO2, H2O, Sunlight

products: glucose, O2
What is exchanged (shared) between the light and dark reaction (hint: think of redox reactions and what they mean)?
the sharing and use of electrons (ATP shuttled to dark reactions and ADP + NADP shuttled to light reactions)
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