The complex II of mitochondrial electron transport chain is also known as

(1). NADH dehydrogenase
(2). Cytochrome bc₁
(3). Succinate dehydrogenase
(4). Cytochrome c oxidase

Number of Attempts: 2

Correct Attempts: 1

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Average Time: 00:02

Match List I with List II:

Choose the correct answer from the options given below:

(1). A-III, B-IV, C-I, D-II
(2). A-IV, B-III, C-II, D-I
(3). A-I, B-II, C-III, D-IV
(4). A-II, B-I, C-IV, D-III

Number of Attempts: 2

Correct Attempts: 1

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Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate.

(1). Succinyl-CoA \(\rightarrow\) Succinic acid
(2). Isocitrate \(\rightarrow\) α-ketoglutaric acid
(3). Malic acid \(\rightarrow\) Oxaloacetic acid
(4). Succinic acid \(\rightarrow\) Malic acid

Number of Attempts: 2

Correct Attempts: 1

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Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A : ATP is used at two steps in glycolysis.
Reason R : First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1-6-diphosphate.
In the light of the above statements, choose the correct answer from the options given below :

(1). Both A and R are true but R is NOT the correct explanation of A.
(2). A is true but R is false.
(3). A is false but R is true.
(4). Both A and R are true and R is the correct explanation of A.

Number of Attempts: 2

Correct Attempts: 1

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Which of the following combinations is required for chemiosmosis?

(1). membrane, proton pump, proton gradient, NADP synthase.
(2). proton pump, electron gradient, ATP synthase.
(3). proton pump, electron gradient, NADP synthase.
(4). membrane, proton pump, proton gradient, ATP synthase.

Number of Attempts: 2

Correct Attempts: 1

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Average Time: 00:02

Match List I with List II:

Choose the correct answer from the options given below :

(1). A-II, B-IV, C-I, D-III
(2). A-III, B-I, C-II, D-IV
(3). A-II, B-IV, C-III, D-I
(4). A-III, B-IV, C-II, D-I

Number of Attempts: 2

Correct Attempts: 1

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Average Time: 00:02

What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?

(1). Four
(2). Six
(3). Two
(4). Eight

Number of Attempts: 2

Correct Attempts: 1

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What amount of energy is released from glucose during lactic acid fermentation?

(1). Approximately 15%
(2). More than 18%
(3). About 10%
(4). Less than 7%

Number of Attempts: 2

Correct Attempts: 1

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The number of substrate level phosphorylations in one turn of citric acid cycle is:

(1). One
(2). Two
(3). Three
(4). Zero

Number of Attempts: 2

Correct Attempts: 1

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Respiratory Quotient (RQ) value of tripalmitin is

(1). 0.7
(2). 0.07
(3). 0.09
(4). 0.9

Number of Attempts: 2

Correct Attempts: 1

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Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalysed by

(1). hexokinase.
(2). enolase.
(3). phosphofructokinase.
(4). aldolase.

Number of Attempts: 2

Correct Attempts: 1

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What is the role of NAD+ in cellular respiration?

(1). It is the final electron acceptor for anaerobic respiration.
(2). It is a nucleotide source for ATP synthesis.
(3). It functions as an electron carrier.
(4). It functions as an enzyme.

Number of Attempts: 2

Correct Attempts: 1

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Which of these statements is incorrect?

(1). Oxidative phosphorylation takes place in outer mitochondrial membrane.
(2). Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
(3). Glycolysis occurs in cytosol.
(4). Enzymes of TCA cycle are present in mitochondrial matrix.

Number of Attempts: 2

Correct Attempts: 1

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Which statement is wrong for Kreb's cycle ?

(1). The cycle starts with the condensation of acetyl group ( acetyl CoA ) with pyruvic acid to yield citric acid .
(2). There are three points in the cycle where NAD⁺ is reduced to NADH + H⁺ .
(3). There is one point in the cycle where FAD⁺ is reduced to FADH₂ .
(4). During conversion of succinyl CoA to succinic acid , a molecule of GTP is synthesized .

Number of Attempts: 2

Correct Attempts: 1

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Average Time: 00:02