During which stage of the cell cycle does the mitotic spindle begin to form?
A. telophase
B. G1
C. S phase
D. prophase
Answer: D
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Gliese 581 is of interest to scientists because it is a ________
a. star of the same type as ours, which may have planets b. galaxy with a massive black hole in the center c. nebulae that is birthing new stars d. planet with an Earth-like mass orbiting a sun like ours
In humans, the thirst center is located in the
a. adrenal cortex. b. hypothalamus. c. anterior pituitary. d. glomerulus
The Environmental Protection Agency
a. regulates the agricultural application of chemicals. b. has called for further study on the effects of atrazine on amphibians. c. now encourages farmers to minimize the runoff of atrazine-laden water from fields. d. does all of these. e. does none of these.
Desensitization therapy is used to stimulate the production of ____ instead of IgE
a. IgM b. IgD c. IgA d. IgG e. antihistamine