Photosynthesis
Labeling Chloroplast
1. Groups of photosynthetic pigment molecules organized in the
thylakoid membrane are called
Answer: grana
2. What is the function of the stroma?
Answer: Fluid filled space surrounding the grana and is involved in the
synthesis of organic molecules from H2O and CO2.
Labeling ETC
1. What are the products of the ETC?
Answer: ATP and NADPH
2. The drug DNP destroys H+ gradient that is made in ETC. What is the
consequence?
Answer: The cells will be forced to do fermentation.
Labeling Calvin Cycle
1. Is the Calvin cycle dependent on light? Why or why not?
Answer: yes because it needs ATP and nadph that come from light
dependent reactions.
C4, C3, CAM plants
1. Photorespiration occurs when the levels of carbon dioxide are
relatively low, and the enzyme RuBisCO catalyzes its released from the
plant, rather than fixing it into an organic acid. CAM plants avoid
photorespiration by
a. fixing CO2 into organic acids during the night; these acids then
release CO2 during the day.
b. performing the Calvin cycle at night.
c. fixing CO2 into four-carbon compounds in the mesophyll, which
immediately release CO2 in the bundle sheath cells.
d. keeping their stomata open during the day.
Answer: a
2. Which plant is better in hot climate? C3 or c4?
Answer: in hot, c4. In cold, c3.
3. Where does the Calvin cycle take place in c4 plants?
Answer: bundle sheath cells.