The action of many prescription drugs is to block the effects of enzymes by competitive inhibition. Explain what this means to your patient who is taking one of the drugs
A) This drug helps by breaking down the enzyme.
B) This drug helps by blocking the binding of the substrate to the active site.
C) This drug helps by blocking the binding of the substrate by binding to the enzyme.
D) This drug helps by binding to the substrate instead of the enzyme.
Answer: B
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Which of the following is under voluntary control?
A. Smooth muscle B. Cardiac muscle C. Skeletal muscle D. Visceral muscle E. Varicose muscle
When placed in water, an inorganic compound dissociates 99 percent, forming hydrogen ions and anions. This compound would be a
A) strong base. B) weak base. C) strong acid. D) weak acid. E) salt.
Which cranial nerve is responsible for innervating the intrinsic and extrinsic tongue muscles?
a. accessory (CN XI) b. glossopharyngeal (CN IX) c. trigeminal (CN V) d. hypoglossal (CN XII)
Which cranial nerve passes through the internal auditory meatus and provides the senses of hearing and balance?
A. Trochlear B. Vestibulocochlear C. Glossopharyngeal