Which body region is composed of cartilage?
a. nose
b. outer ear
c. windpipe
d. embryonic skeleton
e. all of these
E
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Which of the following statements is incorrect concerning the use of drug therapy in an HIV-positive patient?
A) Reverse transcriptase inhibitors can help to slow the virus from entering into host chromosomes. B) Protease inhibitors can slow the assembly of new viruses. C) If drug therapy is used in a confirmed HIV-positive patient, all HIV viruses can be successfully eliminated from the body. D) Two or more drugs can be combined to form a "drug cocktail."
In most gymnosperms the male gametophyte is transported:
A. through water. B. through the air. C. by animals. D. on the ground. E. using gravity.
Which of the following serves to end the menstrual
cycle? a. a surge in luteinizing hormone b. the secretion of human chorionic gonadotropin c. the breakdown of the corpus luteum d. a rise in the level of progesterone e. a drop in the level of gonadotropic hormones in the blood
How many sex chromosomes are in a human gamete?
A) one B) two C) three D) four