The infective stage of the Giardia spp. is:
A. The Oocyst
B. The trypomastigote.
C. The Trophozoite
D. The Cyst
E. The Sporozoite
Ans: D. The Cyst
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Methylene blue
a. is used to kill cells that are moving too quickly to observe. b. detoxifies cells so they are safe to handle. c. is used as food for Physarum cells. d. is a biological stain used to increase contrast of transparent cells.
If you were to think of the cell as a car, and mitosis as a process that drives that car to go, what would be a good analogy for a cell that has a mutation in both copies of a tumor-suppressor gene?
A. The gas pedal of a car does not work at all. B. The brake pedal of a car does not work at all. C. The gas pedal of a car gets stuck while pushed down. D. The brake pedal of a car gets stuck while pushed down.
The surgical removal of one oviduct would
A. Decrease the time between ovulation and implantation. B. Decrease the number of eggs produced by the ovary. C. Prevent half of a woman's eggs from reaching the uterus.
The primary role of a cytokinin is
a. fruit drop b. cell division c. fruit ripening d. promote flowering e. stress response