Oxidative decarboxylation of pyruvate produces:

1. CO2 2. Citrate
3. Acetyl-CoA 4. G3P

Subtopic:  Aerobic Respiration | Kreb's Cycle |
 83%
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The stage of cellular respiration that directly involves oxygen is:

1. glycolysis
2. at the end of ETC
3. Krebs cycle
4. the phosphorylation of ADP to form ATP
Subtopic:  ETS |
 82%
From NCERT
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When an electron is shifted to a more electronegative atom, its potential energy:

1. increases 2. decreases
3. remains same 4. can increase or decrease
Subtopic:  ETS |
 61%
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Consider the steps of glycolysis given in the diagram:  

What is true about reaction 1?
I. Hexokinase is a transferase
II. It acts to keep the glucose concentration low
III. It blocks the glucose from leaking out
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III

Subtopic:  Glycolysis |
 51%
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What process in aerobic respiration generates maximum ATP?

1. substrate-level phosphorylation 2. chemiosmosis
3. Krebs cycle 4. Pyruvate decarboxylation
Subtopic:  Oxidative Phosphorylation |
 51%
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Consider the steps of glycolysis given in the diagram:

Regarding reaction 2 in the diagram:

I: Fructose can also enter the glycolytic pathway by phosphorylation at this point.
II: Under conditions of high F6P concentration, this reaction readily runs in reverse.

1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false

Subtopic:  Glycolysis |
 60%
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Consider the steps of glycolysis given in the diagram:
  
Regarding reaction 3 in the diagram:

I: The reaction is a key regulatory point and is also the rate-limiting step.
II: The reaction is freely reversible.


1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false

Subtopic:  Glycolysis |
 57%
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In aerobic respiration, oxygen acts as:

I: Terminal electron acceptor
II: Terminal proton acceptor

 

1. Only I 2. Only II
3. Both I and II 4. Neither I nor II
Subtopic:  ETS |
 61%
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FADH2 is produced in

1. glycolysis 2. the oxidation of pyruvate
3. the Krebs cycle 4. the electron transport chain
Subtopic:  Kreb's Cycle |
 90%
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NADH is produced during
I. glycolysis
II. the oxidation of pyruvate
III. the Krebs cycle

1.Only I and II2.Only I and III
3.Only II and III4.I, II and III

Subtopic:  Glycolysis | Kreb's Cycle |
 78%
From NCERT
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