
Post-Quiz (Chap5a Photosynthesis)
Authored by AZMAN FBME
Biology
University
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an experiment, a plant’s thylakoid lumen is artificially acidified. What process would this directly stimulate?
NADPH oxidation
ATP synthase activity
Carbon fixation
Chlorophyll degradation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a herbicide blocks plastoquinone in the ETC, which outcome is expected?
Increased O2 release
ATP production stops but NADPH continues
Calvin Cycle speeds up
PSI becomes overactive
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might a desert plant have higher carotenoid levels compared to a shade plant?
To absorb excess UV and dissipate heat.
To reduce water loss.
To enhance blue light absorption for PSII.
To store extra energy as starch.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A bacterial species performs photosynthesis without releasing O2. What is its likely electron source?
Water
Hydrogen sulfide (H2S)
NADPH
Carbon dioxide
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the Calvin Cycle is inhibited, what immediate change occurs in the light reactions?
ATP and NADPH accumulate.
PSII absorbs more photons.
Oxygen production increases.
Chlorophyll switches to carotenoids.
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