An enzyme that is always produced, regardless of the presence of substrates or the end products, is called a repressible enzyme an isoenzyme an allosteric enzyme a constitutive enzyme TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is the best evidence for the lock and key theory of enzyme action? Enzymes are found in living organisms and speed up certain reactions Compounds similar in structure to the substrate inhibit enzyme activity Enzymes determine the direction of a reaction Enzymes speed up reactions by definite amounts TRUE ANSWER : ? YOUR ANSWER : ?
The ability of CTP to bind to aspartate carbamoyltransferase and shut down the synthesis of more CTP is an example of feedback inhibition of enzyme activity enzyme induction none of these enzyme repression TRUE ANSWER : ? YOUR ANSWER : ?
The affinity of an enzyme for its substrate, when the enzyme has a Km of 0.50 M will be __________ than the affinity of an enzyme for its substrate when the enzyme has a Km of 0.05 M. approximately equal greater half lesser TRUE ANSWER : ? YOUR ANSWER : ?
Adenosine triphosphate is a type of nucleotide amino acid fatty acid steroid TRUE ANSWER : ? YOUR ANSWER : ?
If the free energy change (ΔG) in a reaction is a negative value, it indicates that the reaction is in positive direction reaction releases energy reaction absorbs energy reaction is in negative direction TRUE ANSWER : ? YOUR ANSWER : ?
The ability of FADH to be oxidized is __________ than the ability of FAD to be oxidized. approximately equal half greater lesser TRUE ANSWER : ? YOUR ANSWER : ?
The ability of a competitive inhibitor to bind to an active site in an allosterically controlled enzyme is __________ than the ability of a non-competitive inhibitor to bind to an active site in the same allosterically controlled enzyme. lesser greater approximately equal half TRUE ANSWER : ? YOUR ANSWER : ?
To a living organism, which of the following has the greatest amount of available energy per molecule? ATP ADP H2O AMP TRUE ANSWER : ? YOUR ANSWER : ?
The ability of Vibrio fischeri to convert chemical energy directly into radiant energy in bioluminescence is an example of __________ at work. Leibig's law of the minimum Shelford's law of tolerance the third law of thermodynamics the first law of thermodynamics TRUE ANSWER : ? YOUR ANSWER : ?