A drug binds to the active site of an enzyme. If it is bound to the active site of the enzyme, it prevents substrate binding. This drug would be considered a
A. noncompetitive inhibitor.
B. allosteric inhibitor.
C. allosteric activator.
D. competitive inhibitor.
D. competitive inhibitor.
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In the male, an enlarged ________ gland may squeeze the urethra, causing urinary retention
Fill in the blank(s) with correct word
All of the following statements describe characteristics of cancer cells EXCEPT which one?
A) Cancer cells may migrate to other locations in the body. B) Cancer cells often have an enlarged nucleus. C) Cancer cells lose the ability to control cell division. D) Cancer cells typically are overdifferentiated. E) Cancer cells no longer perform their specialized functions prior to becoming cancerous.
How does Viagra enhance erectile function of the penis?
a) by preventing cGMP production b) by inhibiting guanylyl cyclase activity c) by inhibiting cGMP phosphatase d) by inhibiting nitric oxide release e) by inhibiting cGMP phosphodiesterase
Leptospira interrogans exits the body in (feces/aerosols/urine).
Fill in the blank(s) with the appropriate word(s).