Question | Answer |
What name is given to the intermediate in an enzyme-catalyzed reaction? | Enzyme-substrate complete |
Which of the following will cause the rate of enzyme activity to first increase and then level off? | increasing the substrate concentration. |
Which of the following is the reason that trypsin is synthesized as trypsinogen? | trypsin would attack the body's natural proteins. |
Which of the following is associated with noncompetitive inhibition? | allosterism |
In which type of inhibition is it not possible to restore the maximum rate of enzyme activity by adding additional substrate? | noncompetitive inhibition |
Which of the following is true? | the majority of enzymes are globular proteins. |
In which type of inhibition is it possible to restore the maximum rate of enzyme activity by adding additional substrate? | Competitive inhibition. |
Which of the following is true of enzymes? | both a and b, (think about what an enzyme does and what it is.) |
What is the general name used when the product of a reaction sequence inhibits an earlier step in that sequence? | Feedback control |
In Which type of inhibition does the inhibitor bind to the active site? | Competitive inhibition. |
The names of enzymes are often derived from which of the following? | both a and b, (~where they catalyze an what they catalyze?) |
Which of the following will cause the rate of enzyme activity to increase linearly? | increasing the enzyme concentration |
Which of the following is commonly associated with protein modification? | Phosphorylation/dephosphorylation |
Which of the following is true of all allosteric enzymes? | Binding at one site affects protein function at a second site. |
Transition- state analogs do which of the following ? | all of the above,(mimics transition state of substrate
experimentally used to verify active site
clinically inhibit enzymes
used to design artificial enzymes.) |
Which of the following is true of isozymes? | They are different forms of the same enzyme found in different tissues. |
Which of the following can cause enzyme activity to either increase or decrease? | both a and b,(ph and temp?.) |
What term is used to describe a species which affects the functioning of an allosteric enzyme? | regulator |
Which of the following is used in diagnosing infectious hepatitis? | ALT (Alanine aminotransferase .) |
which of the following explains why succinylcholine is used as a muscle relaxant? | it is slowly hydrolyzed by acetylcholinesterase |
Which of the following is another name for a proenzyme? | Zymogen |
Which of the following are monitored to diagnose the severity of a heart attack? | All of these. (AST,LDH,CPK,PHI) |
What name is given to any (organic or inorganic) nonprotein portion of an enzyme? | cofactor |
What name is given to the molecule on which the enzyme works? | substrate |
In addition to proteins, which type of molecules sometimes function as enzymes? | RNA |
Which of the following is a foreign substance that produces an immune response? | An antigen |
In which type of inhibition does the inhibitor bind to the protein at a site other than the active site? | noncompetitive inhibition |
What disease is diagnosed by monitoring amylase activity? | pancreatic disease |
What disease is diagnosed by monitoring acid phosphatase activity? | prostate cancer |
An abzyme is which of the following? | An antibody with catalytic ability |
What is the name given to a material which slows down enzyme function? | Inhibitor |
What name is given to the organic cofactor of an enzyme? | coenzyme |
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