GLYCOLYSIS QUIZ

only in yeast

primarily in animals excluding particles

only in eukaryotes

in all living organisms

Glycogen dehydrogenase

Glycogen synthase

Glycogen semisynthase

Glycogen hydrolase

uses ATP to add a phosphate group to the substrate

removes phosphate groups of substrates

removes water from a double bond

uses NADH to change the oxidation state of the substrate

None of these

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

the techniques for isolating the phosphate donor are not refined enough

no such phosphate donor exists

Covalent modification of the enzyme

Genetic control of the enzyme concentration

Diffusional coupling between adjacent active sites

Allosteric control of the enzyme activity

α-1,4 and α-1,6 linkages

α-1,4 linkage

α-1,4 and β-1,6 linkage

α-1,6 linkages

cytosol

plasma membrane

mitochondrial matrix

intermembrane space

The enzymes of glycolysis only function in one direction

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

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

Glycolysis occurs in either direction

All of these

allosteric inhibition by ATP

allosteric stimulation by ADP

feedback, or product, inhibition by ATP

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 does not require oxygen

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