Name: Class Indicate the answer choice that best completes the statement or answ
ID: 97777 • Letter: N
Question
Name: Class Indicate the answer choice that best completes the statement or answers the question A. 1. Where do allosteric inhibitors bind on an enzyme? a. They always bind at a site different from the active site. b. They always bind at the active site. c. They can bind at either active site or another site. d. They always bind directly to the substrate e. none of these -2. Redox reactions often use this cofactor: a. Riboflavin b. Lipoic acid c. Pyridoxal d. Thiamine e. Biotin 3. How do each of these compounds affect the function of ATCase? a. ATP is a K effector and CTP is a V effector. b. ATP is a V effector and CTP is a K effector. c. Both ATP and CTP are K effectors. d. Both ATP and CTP are V effectors. e. none of these 4. Which ofthe following does not apply to the concerted model for sub nit behavior. a. Each subunit can exist in a relaxed (R) and taut (T) conformation. b. All subunits will be in either the R or the T conformation at the same time. c. Some subunits can be in the R state while others are in the T state. d. The presence of inhibitors will lead to more of the enzyme being in the T form e. the presence of activators will lead to more of the enzyme being in the R form 5. In a comparison of allosteric and non-allosteric enzymes a. it is always possible to define a KM b. it is always possible to define a V c. competitive inhibition is always a possibility logy is completely uncl 6. In the concerted model for allosteric enzymes, if the taut form of the enzyme cannot bind substrate then c, c = 0 d. an inhibitor must be present e. none of these p L earneng Testing Poworend by CogneExplanation / Answer
Answer:
1). a. They always bind at a site different from the active site
Explanation:
The allosteric inhibitor bindsto an enzyme at a site other than the active site. The shape of the active site is altered so that the enzyme can no longer bind to its substrate.
2). a. Riboflavin
Explanation:
Derived from the water-soluble vitamin riboflavin which is also called vitamin B2. Riboflavin is the precursor to FAD and to the related molecule flavin mononucleotide (FMN), both of which are often tightly associated with enzymes that catalyze redox reactions.
3). c. Both ATP and CTP are K effectors.
4). c. Some subunits can be in the R state while others are in the T state.
Explanation:
Each subunit can exist in a relaxed (R) and taut (T) conformation. All subunits will be in either the R or the T conformation at the same time.
5). b. it is always possible to define a Vmax
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