ATP is from which general category of molecules? Proteins Polysaccharides Nucleotides Amino acids TRUE ANSWER : ? YOUR ANSWER : ?
During catabolism, only about 40% of the energy available from oxidizing glucose is used to synthesize ATP. Remaining 60% is lost as heat is used to reduce NADP is stored as fat. remains in the products of metabolism 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 Covalent modification of the enzyme Diffusional coupling between adjacent active sites Genetic control of the enzyme concentration TRUE ANSWER : ? YOUR ANSWER : ?
For every one molecule of sugar glucose which is oxidized __________ molecule of pyruvic acid are produced. 4 3 2 1 TRUE ANSWER : ? YOUR ANSWER : ?
Phosphofructokinase, the major flux-controlling enzyme of glycolysis is allosterically inhibited and activated respectively by AMP and Pi ATP and ADP Citrate and ATP ATP and PEP TRUE ANSWER : ? YOUR ANSWER : ?
Glucose from the breakdown of glycogen is obtained in both (a) and (b) the muscles by hydrolysis the liver by phosphorolysis the muscles by phosphorolysis TRUE ANSWER : ? YOUR ANSWER : ?
A kinase is an enzyme that removes water from a double bond uses ATP to add a phosphate group to the substrate removes phosphate groups of substrates uses NADH to change the oxidation state of the substrate TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following regulates glycolysis steps? All of these Phosphofructokinase Pyruvate kinase Hexose kinase TRUE ANSWER : ? YOUR ANSWER : ?
Fructose-2,6-bisphosphate both (b) and (c) inhibits fructose-1,6-bisphosphatase activates fructose-1,6-bisphosphatase activates phosphofructokinase TRUE ANSWER : ? YOUR ANSWER : ?
Why does the glycolytic pathway continue in the direction of glucose catabolism? The enzymes of glycolysis only function in one direction Glycolysis occurs in either direction There are essentially three irreversible reactions that act as the driving force for the pathway High levels of ATP keep the pathway going in a forward direction TRUE ANSWER : ? YOUR ANSWER : ?