For every one molecule of sugar glucose which is oxidized __________ molecule of pyruvic acid are produced. 2 4 1 3 TRUE ANSWER : ? YOUR ANSWER : ?
ATP is from which general category of molecules? Amino acids Polysaccharides Proteins Nucleotides TRUE ANSWER : ? YOUR ANSWER : ?
The active form of glycogen phosphorylase is phosphorylated, while the dephosphorylation of which active form occurs? Glycogen hydrolase Glycogen semisynthase Glycogen synthase Glycogen dehydrogenase 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 : ?
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 no such phosphate donor exists the high-energy phosphate donor is very short-lived and difficult to isolate None of these the techniques for isolating the phosphate donor are not refined enough TRUE ANSWER : ? YOUR ANSWER : ?
The glycolytic pathway (glucose → 2 pyruvate) is found only in yeast primarily in animals excluding particles in all living organisms only in eukaryotes TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not true of glycolysis? The pathway oxidizes two moles of NADH to NAD+ for each mole of glucose that enters The pathway requires two moles of ATP to get started catabo-lizing each mole of glucose ADP is phosphorylated to ATP via substrate level phosphorylation The pathway does not require oxygen TRUE ANSWER : ? YOUR ANSWER : ?
Fructose-2,6-bisphosphate activates phosphofructokinase inhibits fructose-1,6-bisphosphatase both (b) and (c) activates fructose-1,6-bisphosphatase 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? Diffusional coupling between adjacent active sites Covalent modification of the enzyme Genetic control of the enzyme concentration Allosteric control of the enzyme activity 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 : ?