GLYCOLYSIS QUIZ

Allosteric control of the enzyme activity

Covalent modification of the enzyme

Diffusional coupling between adjacent active sites

Genetic control of the enzyme concentration

the muscles by hydrolysis

both (a) and (b)

the muscles by phosphorolysis

the liver by phosphorolysis

NAD+

ADP

ATP

a concentration gradient across a membrane

Phosphofructokinase

Hexose kinase

Pyruvate kinase

All of these

removes phosphate groups of substrates

uses ATP to add a phosphate group to the substrate

uses NADH to change the oxidation state of the substrate

removes water from a double bond

feedback, or product, inhibition by ATP

allosteric stimulation by ADP

All of these

allosteric inhibition by ATP

Glycolysis occurs in either direction

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

The enzymes of glycolysis only function in one direction

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

α-1,4 and α-1,6 linkages

α-1,4 and β-1,6 linkage

α-1,6 linkages

α-1,4 linkage

Phosphofructokinase

phosphoglycerate kinase

glyceraldehyde-3 -dehydrogenase

pyruvate kinase

glucose-1-P

UTP-glucose

UDP-glucose

glucose-6-P