If a lump on a breast disappears following needle aspiration, it was most likely a _____.
A. fibroadenoma
B. cyst
C. gland
D. malignant tumor
B. cyst
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Calcium levels remain low in the cytosol
a. only to ensure that calcium does not precipitate inside the cells. b. and therefore transient calcium increases can be used as intracellular signals. c. so that calcium does not accumulate in mitochondria. d. to allow extracellular calcium to drive import of other ions.
When were the first cases of SARS reported?
A. 2002 B. 2012 C. 1992 D. 1820 E. 1920
During diffusion how will the particles of a solution move?
a. The solutes will move from a high concentration to a low concentration. b. The solutes will move toward the left side of the membrane. c. The solutes will move from a low concentration to a high concentration. d. The solutes will move toward the right side of the membrane.
A species that is a mimic will most likely
A) resemble its surroundings. B) produce chemicals that deter predators. C) produce "smoke screens." D) have a behavior similar to that of a more toxic species. E) use bright colors to warn that it is harmful.