GLYCOLYSIS QUIZ | EXAMIANS

When concentration of the reactants is higher than the equilibrium concentration then

the gibbs free energy will be negative

both (b) and (c)

the gibbs free energy will be positive

more products will be formed

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The enzymes of glycolysis in a eukaryotic cell are located in the

mitochondrial matrix

plasma membrane

cytosol

intermembrane space

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Glycolytic pathway regulation involves

feedback, or product, inhibition by ATP

allosteric stimulation by ADP

All of these

allosteric inhibition by ATP

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For every one molecule of sugar glucose which is oxidized __________ molecule of pyruvic acid are produced.

1

2

3

4

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Which of the following could act as an uncoupler of electron transport and ATP synthesis?

neither (a) nor (b)

Both (a) and (b)

Dinitrophenol

The Fo base-piece of ATP synthase (without the Fl subunit)

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During glycolysis, the major energy generating step involves

phosphoglycerate kinase

pyruvate kinase

Phosphofructokinase

glyceraldehyde-3 -dehydrogenase

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The active form of glycogen phosphorylase is phosphorylated, while the dephosphorylation of which active form occurs?

Glycogen synthase

Glycogen semisynthase

Glycogen dehydrogenase

Glycogen hydrolase

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Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically inhibited and activated respectively by

ATP and PEP

AMP and Pi

ATP and ADP

Citrate and ATP

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During catabolism, only about 40% of the energy available from oxidizing glucose is used to synthesize ATP. Remaining 60%

remains in the products of metabolism

is used to reduce NADP

is lost as heat

is stored as fat.

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Why does the glycolytic pathway continue in the direction of glucose catabolism?

The enzymes of glycolysis only function in one direction

Glycolysis occurs in either direction

There are essentially three irreversible reactions that act as the driving force for the pathway

High levels of ATP keep the pathway going in a forward direction

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