Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
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
Which process directly generates the proton gradient across the inner mitochondrial membrane during aerobic respiration?
Glycolysis
Krebs cycle
Electron transport chain
Substrate-level phosphorylation
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.
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 oxidative phosphorylation, the energy released by the electron transport chain is directly used to:
Synthesize glucose
Hydrolyze ATP
Establish a proton gradient
Reduce NAD+
In a chloroplast, the highest number of protons are found in:
Stroma
Lumen of thylakoids
Intermembrane space
Outer membrane
During the light-dependent reactions of photosynthesis, where is the greatest concentration of protons located within the chloroplast?
Stroma
Thylakoid lumen
Intermembrane space
Cytoplasm
Which part of the chloroplast becomes more acidic during active photosynthesis due to proton accumulation?
Stroma
Thylakoid lumen
Intermembrane space
Chloroplast envelope
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
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
