In the Calvin cycle, which enzyme catalyzes the fixation of CO2?
Q.262Medium
Which of the following statements about respiration is correct?
Q.263Easy
The Q10 value for enzyme-catalyzed reactions is typically:
Q.264Medium
Which statement about transpiration is INCORRECT?
Q.265Medium
In the electron transport chain, which complex pumps the most protons across the inner mitochondrial membrane?
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Q.266Medium
Which of the following factors does NOT directly affect photosynthesis?
Q.267Easy
The grana in chloroplasts are composed of:
Q.268Medium
In photorespiration, the primary substrate is:
Q.269Medium
Which organelle is responsible for amino acid synthesis in plants?
Q.270Hard
The rate-limiting step of photosynthesis under normal conditions is:
Q.271Hard
Which of the following best describes the Pasteur effect?
Q.272Medium
At saturating light intensity, photosynthesis is primarily limited by:
Q.273Easy
The phenomenon where plants lose water in liquid form through hydathodes is called:
Q.274Hard
Which statement about ATP synthase is correct?
Q.275Medium
In C4 plants, the first stable product of CO2 fixation is:
Q.276Medium
Which of the following is a characteristic feature of bundle sheath cells in C4 plants?
Q.277Medium
During the Calvin cycle, the reduction phase requires ATP and NADPH. How many molecules of ATP are consumed to fix one molecule of CO2?
Q.278Easy
Which of the following enzyme complexes in the thylakoid membrane is responsible for water splitting and oxygen evolution?
Q.279Hard
A plant is kept in a chamber with elevated CO2 concentration (800 ppm) and saturating light. What will be the most likely effect on the RuBP level in the stroma?
Q.280Medium
In C3 plants, the enzyme RuBisCO catalyzes carboxylation. Under what condition does RuBisCO exhibit oxygenase activity instead?
