Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
If the inner mitochondrial membrane were to become permeable to protons, what would be the MOST immediate consequence on ATP synthesis?
ATP synthesis would increase due to increased proton flow.
ATP synthesis would stop because the proton gradient would dissipate.
ATP synthesis would be unaffected as it relies on substrate-level phosphorylation.
ATP synthesis would decrease, but some ATP would still be produced by glycolysis.
In the electron transport chain, electrons are passed from one carrier to another. What is the primary reason for this sequential transfer?
To produce water directly
To regenerate NAD+ and FAD
To release energy in a controlled manner to create a proton gradient
To directly phosphorylate ADP to ATP
What is the primary function of the proton gradient generated during the light-dependent reactions?
To split water molecules.
To reduce NADP+ to NADPH.
To drive ATP synthesis by ATP synthase.
To fix carbon dioxide.
Which of the following statements is INCORRECT concerning the energy release during ATP synthesis via chemiosmosis?
The proton gradient across the inner mitochondrial membrane drives ATP synthesis.
ATP synthase utilizes the energy stored in the proton gradient to phosphorylate ADP.
Oxygen acts as the final electron acceptor in the electron transport chain, contributing to the proton gradient.
ATP hydrolysis releases energy during chemiosmosis.
The enzyme directly responsible for synthesizing ATP during chemiosmosis is:
NADH dehydrogenase
Cytochrome oxidase
ATP synthase
ATPase
Which of the following BEST describes the relationship between the electron transport chain and ATP synthesis during chemiosmosis?
The electron transport chain creates a proton gradient that drives ATP synthesis
ATP synthesis provides the energy for the electron transport chain
The electron transport chain and ATP synthesis are independent processes
ATP synthase creates a proton gradient that drives the electron transport chain
Which of the following is essential for chemiosmosis to occur?
A proton gradient across a membrane
An electron transport chain
ATP synthase
ADP
The energy source that directly drives ATP synthesis during chemiosmosis is:
The electron transport chain
The potential energy stored in a proton gradient
ATP synthase
ADP
During chemiosmosis, the movement of protons across the membrane through ATP synthase directly results in:
The creation of a proton gradient
The hydrolysis of ATP
The synthesis of ATP from ADP and inorganic phosphate
The activation of the electron transport chain
Proton gradient is broken down due to
Movement of electrons across the membrane to stroma
Movement of electrons across the membrane to lumen
Movement of proton across the membrane to lumen
Movement of proton across the membrane to stroma
