The respiratory quotient:
I: is the ratio of the volume of carbon dioxide evolved to the volume of oxygen evolved
II: is 1, if carbohydrates are used as respiratory substrates and are completely oxidized
 
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

Subtopic:  Respiratory Quotient |
From NCERT
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Consider the two statements:
I: ATP is used as the energy currency of the cell.
II: ATP molecule has two high energy bonds.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic:  Introduction |
From NCERT
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Cellular respiration includes:
I: Transport of gases from the respiratory surface to the cells
II: Breakdown of food material within the cell to release energy
III: Trapping of energy released during the breakdown of food material within the cell for synthesis of ATP
 
1. Only I and II 2. Only I and III
3. Only II and III 4. I, II and III
Subtopic:  Aerobic Respiration |
 52%
From NCERT
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Consider the two statements:

Statement I: Inside a cell, the glucose molecule is oxidised not in one step but in several small steps.
Statement II: Some steps will be just large enough such that energy liberated can be coupled to ATP synthesis.
 
1. Both Statement I and Statement II are correct and Statement II explains Statement I
2. Both Statement I and Statement II are correct but Statement II does not explain Statement I
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic:  Introduction |
 56%
From NCERT
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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
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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
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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
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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 |
 79%
From NCERT
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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 |
 55%
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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
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