Most often, the internal environment of a cell has a higher concentration of solutes than is found in the environment outside.
A) True
B) False
A) True
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When subtropical forest is cleared, what biome is most likely to replace it?
a. grassland suitable for grazing b. cropland ideal for agriculture c. young forest with the same species d. desert with poor eroded soil e. chaparral with grass and low bushes
Gatekeeper genes and caretaker genes are both involved in cancer, but gatekeeper genes can be distinguished from caretaker genes because gatekeeper genes _____ while caretaker genes _____
1.affect the mutation rate of all genes / normally prevent chromosomal instability and aneuploidy 2.mutate to stimulate uncontrolled cell division / encode proteins that limit the rate of cell division 3.control the cell cycle / encode proteins involved in DNA repair 4.all of the choices
The interleukin-2 (IL-2) growth factor interacts with receptors on
A) embryonic cells. B) cytotoxic T lymphocytes. C) mesenchymal cells. D) smooth muscle cells. E) epithelial cells.
Which is a possible report of basal metabolic rate?
A. 1,329 Calories per day B. 250 calories C. 1,329 calories per week D. 1,100 grams per day