GLYCOLYSIS QUIZ

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 stored as fat.

is lost as heat

is used to reduce NADP

TRUE ANSWER : ?
YOUR ANSWER : ?

ATP is from which general category of molecules?

Amino acids

Proteins

Polysaccharides

Nucleotides

TRUE ANSWER : ?
YOUR ANSWER : ?

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

ATP and ADP

AMP and Pi

Citrate and ATP

ATP and PEP

TRUE ANSWER : ?
YOUR ANSWER : ?

The glycolytic pathway (glucose → 2 pyruvate) is found

only in eukaryotes

in all living organisms

primarily in animals excluding particles

only in yeast

TRUE ANSWER : ?
YOUR ANSWER : ?

Glycolytic pathway regulation involves

allosteric inhibition by ATP

All of these

feedback, or product, inhibition by ATP

allosteric stimulation by ADP

TRUE ANSWER : ?
YOUR ANSWER : ?

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

plasma membrane

intermembrane space

cytosol

mitochondrial matrix

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a mechanism for altering the flux of metabolites through the rate-determining step of a pathway?

Allosteric control of the enzyme activity

Genetic control of the enzyme concentration

Diffusional coupling between adjacent active sites

Covalent modification of the enzyme

TRUE ANSWER : ?
YOUR ANSWER : ?

The released energy obtained by oxidation of glucose is stored as

NAD+

ADP

a concentration gradient across a membrane

ATP

TRUE ANSWER : ?
YOUR ANSWER : ?

A kinase is an enzyme that

removes water from a double bond

uses NADH to change the oxidation state of the substrate

removes phosphate groups of substrates

uses ATP to add a phosphate group to the substrate

TRUE ANSWER : ?
YOUR ANSWER : ?

Glucose from the breakdown of glycogen is obtained in

the muscles by phosphorolysis

the muscles by hydrolysis

the liver by phosphorolysis

both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

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