Enzyme Reaction Which of the following is the best evidence for the lock and key theory of enzyme action? Enzymes speed up reactions by definite amounts Compounds similar in structure to the substrate inhibit enzyme activity Enzymes are found in living organisms and speed up certain reactions Enzymes determine the direction of a reaction Enzymes speed up reactions by definite amounts Compounds similar in structure to the substrate inhibit enzyme activity Enzymes are found in living organisms and speed up certain reactions Enzymes determine the direction of a reaction ANSWER DOWNLOAD EXAMIANS APP
Enzyme Reaction 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 is in negative direction reaction absorbs energy reaction is in positive direction reaction releases energy reaction is in negative direction reaction absorbs energy ANSWER DOWNLOAD EXAMIANS APP
Enzyme Reaction About 7.3 kcal/mole are released when the terminal phosphate bond of ATP is broken by hydrolysis NAD+ is reduced to NADH ATP hydrolysis is coupled to sucrose synthesis glucose is converted to CO2 and H2O the terminal phosphate bond of ATP is broken by hydrolysis NAD+ is reduced to NADH ATP hydrolysis is coupled to sucrose synthesis glucose is converted to CO2 and H2O ANSWER DOWNLOAD EXAMIANS APP
Enzyme Reaction 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 the first law of thermodynamics Shelford's law of tolerance the third law of thermodynamics Leibig's law of the minimum the first law of thermodynamics Shelford's law of tolerance the third law of thermodynamics ANSWER DOWNLOAD EXAMIANS APP
Enzyme Reaction A substrate binds to its enzyme at a location called the __________ site. active polypeptide substrate coenzyme active polypeptide substrate coenzyme ANSWER DOWNLOAD EXAMIANS APP
Enzyme Reaction 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. half lesser approximately equal greater half lesser approximately equal greater ANSWER DOWNLOAD EXAMIANS APP
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