The useful purpose served by lactate fermentation is:
1. Make lactose available for gluconeogenesis
2. Production of additional ATP in anaerobic conditions
3. Regeneration of NAD+
4. Increased availability of oxygen for the skeletal muscle

Subtopic:  Fermentation |
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The primary role of oxygen in cellular respiration is to:

1. yield energy in the form of ATP as it is passed down the respiratory chain.
2. act as an acceptor for electrons and hydrogen, forming water
3. combine with carbon, forming CO2.
4. combine with lactate, forming pyruvate.

Subtopic:  Aerobic Respiration |
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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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