In photosynthesis, the dark reaction is called so because:
Correct answer: B. It does not require light energy.
- A. It occurs in darkness.
- B. It does not require light energy.
- C. It cannot occur during the daytime.
- D. It occurs more rapidly at night.
Explanation
The dark reactions of photosynthesis are also known as the Calvin cycle, and they are called "dark reactions" not because they occur in the dark, but because they do not directly require light. Unlike the light-dependent reactions that take place in the thylakoid membranes and require light energy to generate ATP and NADPH, the Calvin cycle occurs in the stroma of chloroplasts and can proceed in the absence of light.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
Practise Bioenergetics
1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Bioenergetics questions
What are the different stages of the calvin cycle?
Which of the following statements about the head of a chlorophyll molecule is incorrect?
Net yield of H2O in photosynthesis is _.
Cellular respiration is essentially what type of process?
The Light reaction takes place in?
Cooperation of the two photosystems of the chloroplast is required for?