The number of metabolic steps in EMP pathway where glucose undergoes partial oxidation to form two molecules of pyruvic acid is:

1. 8 2. 9
3. 10 4. 11

Subtopic:  Glycolysis |
 89%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In glycolysis, ATP is synthesised:
1. during conversion of 1,3 biphosphoglyceric acid to 3-phosphoglyceric acid and during conversion of phosphoenolpuruvate to pyruvic acid
2. during conversion of glucose to glucose-6-phospate and during conversion of fructose-6-phosphate to fructose – 1,6- biphosphate
3. during conversion of glucose to glucose-6-phospate and during conversion of glucose-6-phosphate to fructose-6- phosphate
4. during conversion of 3-phosphoglyceric acid to 2-phosphoglycerate and during conversion of 2-phosphoglycerate to phosphoenolpuruvate
Subtopic:  Glycolysis |
 84%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


The net gain of number of ATP molecules during glycolysis will be:

1. 2 2. 4
3. 6 4. 8
Subtopic:  Glycolysis |
 79%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


advertisementadvertisement

In glycolysis, NAD+ is reduced to NADH + H+:
1. during conversion of 1,3 biphosphoglyceric acid to 3-phosphoglyceric acid
2. during conversion of glyceraldehyde -3-phosphate to 1,3 biphosphoglyceric acid
3. during conversion of glucose to glucose-6-phospate
4. during conversion of 3-phosphoglyceric acid to 2-phosphoglycerate
Subtopic:  Glycolysis |
 80%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


Consider the given statements:

Statement I:  In alcohol fermentation in yeast, pyruvic acid decarboxylase and alcohol dehydrogenase convert pyruvic acid to carbon dioxide and ethanol.
Statement II:  In lactic acid fermentation, lactate dehydrogenase reduces pyruvic acid to lactic acid and carbon dioxide in muscle cells during exercise.
 
1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic:  Fermentation |
 56%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


What acts as the terminal electron acceptor when glucose is completely oxidised inside a cell in the presence of oxygen?
1. Hydrogen sulphide 2. Water
3. Oxygen 4. Pyruvic acid
Subtopic:  ETS |
 87%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


advertisementadvertisement

During aerobic respiration, the complete oxidation of pyruvate by the stepwise removal of all the hydrogen atoms, leaving three molecules of carbon dioxide, takes place in the:
1. Cytosol
2. Mitochondrial matrix
3. Mitochondrial inter-membrane space
4. Inner mitochondrial membrane
Subtopic:  Aerobic Respiration |
 74%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


In the Krebs cycle, two successive steps of decarboxylation result in the formation of:
1. α-ketoglutarate 2. Isocitrate
3. Succinyl CoA 4. Succinic acid
Subtopic:  Kreb's Cycle |
 62%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


After the two molecules of pyruvate, produced at the end of glycolysis from one molecule of glucose, enter the mitochondrial matrix and till the Krebs cycle is complete, which of the following will not be a correct number of the corresponding molecule produced?
1. Eight molecules of NADH + H+
2. Two molecules of FADH2
3. Two molecules of ATP
4. Four molecules of carbon dioxide
Subtopic:  Aerobic Respiration |
 63%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.


advertisementadvertisement

Which complex in the mitochondrial electron transport system contains cytochromes a and a3 and two copper centres?
1. Complex I 2. Complex II
3. Complex III 4. Complex IV
Subtopic:  ETS |
 87%
From NCERT

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.