Prepare for NEET Biology Respiration in Plants with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert explanations of glycolysis, Krebs cycle, and more.
Is oxygen required for glycolysis to occur?
Yes
No
Only in the initial steps
Only in the final steps
During glycolysis, the enzyme phosphofructokinase is allosterically inhibited by:
ATP
ADP
AMP
Glucose-6-phosphate
Which of the following is NOT a direct product of glycolysis?
Acetyl-CoA
Pyruvate
ATP
NADH
In glycolysis, how many ATP molecules are consumed before the production phase begins?
1
2
3
4
The isomerization of glucose-6-phosphate to fructose-6-phosphate in glycolysis is catalyzed by:
Hexokinase
Phosphoglucose isomerase
Phosphofructokinase
Aldolase
Which compound is directly phosphorylated by ATP during the energy investment phase of glycolysis?
Glucose
Fructose-6-phosphate
Both glucose and fructose-6-phosphate
Glyceraldehyde-3-phosphate
Under anaerobic conditions, the primary fate of pyruvate produced in glycolysis is:
Entry into the Krebs cycle
Conversion to lactate or ethanol
Oxidation to CO2 and H2O
Conversion to Acetyl-CoA
During aerobic respiration, the maximum number of ATP molecules are generated during which stage?
Glycolysis
Krebs cycle
Oxidative phosphorylation
Link reaction
Which of the following is NOT a direct product of the Krebs cycle?
FADH2
NADH
ATP synthase
CO2
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
