Which of the Following Is TRUE Concerning the Structure and Function

question 74

Multiple Choice

Which of the following is TRUE concerning the structure and function of enzymes?

• A) After an enzyme has catalyzed a reaction, it resumes its original shape and can interact with a new substrate molecule.
• B) All enzymes bind cofactors necessary for their function.
• C) Competitive inhibition of an enzyme occurs when an inhibitor binds to an allosteric site on the enzyme.
• D) An apoenzyme is a combination of a cofactor bound to a holoenzyme.
• E) Enzymes can function at a wide range of pH.

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Definitions:

A-Beta Fibers

Large sensory fibers involved in rapidly transmitting sensation and possibly in inhibiting the transmission of pain.

Myelinated

Refers to nerve fibers that are covered in a protective, fatty sheath called myelin, which facilitates faster electrical impulse transmission.

Morphine

A powerful opiate analgesic drug derived from the opium poppy used to relieve severe pain.

Opiates

A group of drugs derived from the opium poppy, used medicinally for pain relief but having a high potential for dependence and abuse.