Which of the following processes makes direct use of oxygen?
1. Glycolysis
2. Fermentation
3. Kreb's citric acid cycle
4. Electron transport

Subtopic:  ETS:2 | ETS:1 | ETS |
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Which statement is wrong for Krebs' cycle?

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

Subtopic:  Kreb's Cycle |
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Oxidative phosphorylation is

(1) formation of ATP by transfer of phosphate group from a substrate to ADP

(2) oxidation of phosphate group in ATP

(c) addition of phosphate group to ATP

(4) formation of ATP by energy release from electrons removed during substrate oxidation. 

Subtopic:  Oxidative Phosphorylation |
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In which one of the following processes CO2 is not released?

1. Aerobic respiration in plants

2. Aerobic respiration in animals

3. Alcoholic fermentation

4. Lactate fermentation

Subtopic:  Fermentation |
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The three boxes in this diagram represent the three major biosynthetic pathways in

aerobic respiration. Arrow represent net reactants or products

Arrows numbered 4, 8, 12 can all be 

1. NADH

2. ATP

3. H2O

4. FAD+ or FADH2

Subtopic:  Glycolysis |
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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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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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