In the Calvin cycle, which enzyme catalyzes the fixation of CO2?
Q.62Medium
Which of the following statements about respiration is correct?
Q.63Easy
The Q10 value for enzyme-catalyzed reactions is typically:
Q.64Medium
Which statement about transpiration is INCORRECT?
Q.65Medium
In the electron transport chain, which complex pumps the most protons across the inner mitochondrial membrane?
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Q.66Medium
Which of the following factors does NOT directly affect photosynthesis?
Q.67Easy
The grana in chloroplasts are composed of:
Q.68Medium
In photorespiration, the primary substrate is:
Q.69Medium
Which organelle is responsible for amino acid synthesis in plants?
Q.70Hard
The rate-limiting step of photosynthesis under normal conditions is:
Q.71Hard
Which of the following best describes the Pasteur effect?
Q.72Medium
At saturating light intensity, photosynthesis is primarily limited by:
Q.73Easy
The phenomenon where plants lose water in liquid form through hydathodes is called:
Q.74Hard
Which statement about ATP synthase is correct?
Q.75Medium
In C4 plants, the first stable product of CO2 fixation is:
Q.76Medium
Which of the following is a characteristic feature of bundle sheath cells in C4 plants?
Q.77Medium
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.78Easy
Which of the following enzyme complexes in the thylakoid membrane is responsible for water splitting and oxygen evolution?
Q.79Hard
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.80Medium
In C3 plants, the enzyme RuBisCO catalyzes carboxylation. Under what condition does RuBisCO exhibit oxygenase activity instead?
