AIDS, or acquired immunodeficiency syndrome, is caused by ________.
A. a virus
B. a protozoan
C. a bacteria
D. a fungus
Answer: A
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In the figure above, which number represents the point in the cell cycle during which the chromosomes are replicated?
A) I B) II C) III D) IV E) V
The primate fossil named Lucy was a(n):
a. sahelanthropus b. australopith c. cercopith d. prosimian e. hominid
Glucose molecules provide energy to power the swimming motion of sperm. In this example, the sperm are changing ________
A) chemical energy into kinetic energy
B) chemical energy into potential energy
C) kinetic energy into potential energy
D) kinetic energy into chemical energy
The diagnosis of hypertension in adults is based on the _____
A) measurement of fatty deposits on the endothelium of arteries B) measurement of the LDL/HDL ratio in peripheral blood C) percentage of blood volume made up of platelets D) blood pressure being greater than 140 mm Hg systolic and/or greater than 90 mm Hg diastolic