Photosynthesis Review
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Where does all energy ultimately come from?
Explain why plants are green? (think absorption & reflection)
Distinguish between chlorophyll a and b.
Where can chlorophyll be found in a cell?
Which wavelength of light is most important for photosynthesis?
Why do leaves change their color in the fall?
Give two examples of organisms that do photosynthesis.
How are photosynthesis and respiration related?
Define biochemical pathway.
Write the balanced chemical equation for photosynthesis.
What 3 things are needed for photosynthesis to take place?
Be able to describe each of the following structures
a. Chloroplast
b. Thylakoid
c. Stroma
d. Grana
Photosynthesis changes _____________ energy into ______________ energy.
Describe how ATP and ADP are related. Which one has more energy?
What are the reactants in the light reactions?
What are the products?
At photosystem II what three things are produced?
As the electrons move down the ETC what molecule is pumped across the thylakoid membrane?
Why is this molecule (#18) needed?
Why are NADPH and ATP needed?
Which photosystem happens first?
What is the name of the enzyme that makes ATP’s?
Why is the Calvin Cycle also called the dark reactions?
What two types of molecules are needed to start the Calvin Cycle?
How many carbons are on each?
What enzyme joins them?
Why is PGA a 3 carbon molecule and not a 6 carbon molecule?
Why are NADPH and ATP used with PGA?
How many carbons on a G3P molecule?
What happens to most of the G3P molecules?
How many G3P’s are needed to make a glucose?
What is needed to convert G3P to RuBP?
Give three factors that can affect a plants ability to do photosynthesis. Explain how those factors
would disrupt either the Light reactions or the Calvin Cycle.