Enzyme regulation of metabolism by the end product of a multienzyme system that blocks he action of a "pacemaker" enzyme at or near the beginning of the pathway. - Answer>>> negative feedback
Similar to the system in bac
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Enzyme regulation of metabolism by the end product of a multienzyme system that blocks he action of a "pacemaker" enzyme at or near the beginning of the pathway. - Answer>>> negative feedback
Similar to the system in bacterial membranes, mitochondria are able to produce energy via the electron transport system, located
A. within the cell cytoplasm
B. on the outer membrane of the mitochondrion
C. within the intermembrane space
D. on the inner membrane - Answer>>> D. on the inner membrane
A complex organic molecule which operates in function with an enzyme. Serves as a transient carrier of specific atoms of functional groups during metabolic reactions. - Answer>>> coenzyme
Anabolic reactions often synthesize polymers such as polysaccharides, poly peptides and polynucleotides. The enzymes involved form covalent bonds between smaller substrate molecules during
A. analysis reactions
B. dehydration reactions
C. decomposition reactions
D. hydrolysis reactions - Answer>>> B. dehydration reactions
Enzymes have unique characteristics such as shape, _______, and function.
A. specificity
B. sensitivity - Answer>>> A. specificity
An enzymes accessory. It can be organic or inorganic. - Answer>>> cofactor
An enzyme present in bacterial cells in constant amounts, regardless of the presence of substrate. Enzymes of the central catabolic pathways are typical examples. - Answer>>> constitutive enzymes
Enzyme regulation is an important aspect of metabolic control. Regulation by a product reacting with a regulatory site on the DNA is called
A. competitive inhibition
B. noncompetitive inhibition
C. enzyme induction
D. enzyme repression - Answer>>> D. enzyme repression
Enzymes are much _________ in size than their substrates.
A. smaller
B. larger - Answer>>> B. larger
Enzymes __________ used up or permanently changed by the reaction they catalyze.
A. are
B. are not - Answer>>> B. are not
Enzymes _______ be recycled.
A. can
B. cannot - Answer>>> A. can
Enzymes function in extremely _______________ concentrations.
A. high
B. low - Answer>>> B. low
Cofactors can be
A. holoenzymes
B. metallic
C. apoenzymes
D. substrates - Answer>>> B. metallic
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