The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

1. glycolysis

2. fermentation

3. aerobic respiration

4. photorespiration

Subtopic:  Fermentation |
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Aerobic respiratory pathway is appropriately termed 

1. catabolic 

2. parabolic 

3. amphibolic 

4. anabolic 

Subtopic:  Amphibolic Nature of Respiration |
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The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because

(1) high energy bonds are formed in mitochondrial proteins

(2) ADP is pumped out of the matrix into the intermembrane space

(3) a proton gradient forms across the inner membrane

(4) there is a change in the permeability of the inner mitochondrial membrane toward Adenosine Diphosphate (ADP)

Subtopic:  Oxidative Phosphorylation |
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Which one of the following mammalian cells is not capable of metabolising glucose to

carbon-dioxide aerobically?

1. White blood cells

2. Unstriated muscle cells

3. Liver cells

4. Red blood cells

Subtopic:  Aerobic Respiration |
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All enzymes of TCA cycle are located in the mitochondrial matrix except one which is

located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes.

This enzyme is

1. lactate dehydrogenase

2. isocitrate dehydrogenase

3. malate dehydrogenase

4. succinate dehydrogenase

Subtopic:  Kreb's Cycle |
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The overall goal of glycolysis, Krebs cycle and the electron transport system is the

formation of:

1. ATP in small stepwise units

2. ATP in one large oxidation reaction

3. Sugars

4. Nucleic acids

Subtopic:  Aerobic Respiration |
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How many ATP molecules could maximally be generated from one molecule of glucose, if

the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the

useful chemical energy available in the high energy phosphate bond of one mole of ATP is

12 Kcal?

1. Two 

2. Thirty

3. Fifty seven

4. One

Subtopic:  Glycolysis |
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The TCA cycle is considered as an aerobic pathway because

1. all enzymes of the cycle use molecular oxygen

2. some enzymes of the cycle require molecular oxygen

3. molecular oxygen is essential to reoxidise the coenzymes reduced during operation of

the cycle.

4. in absence of oxygen, the enzymes of TCA cycle are denatured.

Subtopic:  Kreb's Cycle |
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In Krebs' cycle GTP is formed in

1. substrate level phosphorylation

2. oxidative phosphorylation

3. non-cyclic photophosphorylation

4. cyclic photophosphorylation

Subtopic:  Kreb's Cycle |
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In respiration from 180g of glucose which of the following is formed?

1. 264gm CO2+190gm H2O+391 Kcal

2. 264gm CO2+108gm H2O+686 Kcal

3. 390gm CO2+108gm H2O+686 Kcal

4. 390gm CO2+ 264gm H2O+391 Kcal

Subtopic:  Glycolysis |
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