ELECTRICAL MACHINES QUIZ

Which of the following is not true of glycolysis?

ADP is phosphorylated to ATP via substrate level phosphorylation

The pathway requires two moles of ATP to get started catabo-lizing each mole of glucose

The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters

The pathway does not require oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

In glycolysis, ATP is formed by the transfer of a high-energy phosphate from 1,3-bisphosphoglycerate to ADR No such high-energy phosphate donor has ever been isolated in mitochondria because

None of these

no such phosphate donor exists

the techniques for isolating the phosphate donor are not refined enough

the high-energy phosphate donor is very short-lived and difficult to isolate

TRUE ANSWER : ?
YOUR ANSWER : ?

ATP is from which general category of molecules?

Proteins

Amino acids

Nucleotides

Polysaccharides

TRUE ANSWER : ?
YOUR ANSWER : ?

The released energy obtained by oxidation of glucose is stored as

a concentration gradient across a membrane

NAD+

ADP

ATP

TRUE ANSWER : ?
YOUR ANSWER : ?

During glycolysis, the major energy generating step involves

pyruvate kinase

Phosphofructokinase

phosphoglycerate kinase

glyceraldehyde-3 -dehydrogenase

TRUE ANSWER : ?
YOUR ANSWER : ?

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

neither (a) nor (b)

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

Both (a) and (b)

Dinitrophenol

TRUE ANSWER : ?
YOUR ANSWER : ?

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

ATP and PEP

Citrate and ATP

ATP and ADP

AMP and Pi

TRUE ANSWER : ?
YOUR ANSWER : ?

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

is used to reduce NADP

is lost as heat

remains in the products of metabolism

is stored as fat.

TRUE ANSWER : ?
YOUR ANSWER : ?

The glycolytic pathway (glucose → 2 pyruvate) is found

in all living organisms

only in eukaryotes

only in yeast

primarily in animals excluding particles

TRUE ANSWER : ?
YOUR ANSWER : ?

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

more products will be formed

the gibbs free energy will be negative

both (b) and (c)

the gibbs free energy will be positive

TRUE ANSWER : ?
YOUR ANSWER : ?

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