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. greater lesser half approximately equal TRUE ANSWER : ? YOUR ANSWER : ?
Reduction is the loss of electron gain of electron loss of proton gain of protons 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 Enzymes speed up reactions by definite amounts Enzymes determine the direction of a reaction Compounds similar in structure to the substrate inhibit enzyme activity 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 is in negative direction reaction absorbs energy reaction releases energy TRUE ANSWER : ? YOUR ANSWER : ?
Hydrogen and oxygen release enormous amounts of energy when they react. Yet, hydrogen and oxygen can be mixed together in a balloon and nothing will happen. Why? Competitive inhibitors are blocking the reaction from occurring in the active site All of these There must be contaminating elements in the balloon that prohibit the reaction from occurring The energy of activation to form the transition-state complex is too high to allow the reaction to occur without assistance TRUE ANSWER : ? YOUR ANSWER : ?
An enzyme that is always produced, regardless of the presence of substrates or the end products, is called an allosteric enzyme an isoenzyme a constitutive enzyme a repressible enzyme TRUE ANSWER : ? YOUR ANSWER : ?
Adenosine triphosphate is a type of amino acid fatty acid nucleotide steroid TRUE ANSWER : ? YOUR ANSWER : ?
The fact that β-oxidation of fatty acids, occurs in the mitochondria whereas fatty acid synthesis occurs in the cytoplasmic matrix, is an example of regulation of enzymatic activity by the __________ mechanism. induction competitive inhibition compartmentation repression TRUE ANSWER : ? YOUR ANSWER : ?
About 7.3 kcal/mole are released when glucose is converted to CO2 and H2O ATP hydrolysis is coupled to sucrose synthesis the terminal phosphate bond of ATP is broken by hydrolysis NAD+ is reduced to NADH TRUE ANSWER : ? YOUR ANSWER : ?
The ability of FADH to be oxidized is __________ than the ability of FAD to be oxidized. greater approximately equal half lesser TRUE ANSWER : ? YOUR ANSWER : ?