Small hydrophobic molecules cross cytoplasmic membranes by simple diffusion.
Answer the following statement true (T) or false (F)
True
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An elephant and a mouse are running in full sunlight, and both overheat by the same amount above their normal body temperatures. When they move into the shade and rest, which animal will cool down faster?
A) The elephant will because it has the higher surface-area-to-volume ratio. B) The elephant will because it has the lower surface-area-to-volume ratio. C) The mouse will because it has the higher surface-area-to-volume ratio. D) They will cool at the same rate because they overheated by the same amount.
When protists feed on solid nutrients such as bacteria by phagocytosis, they are said to be using ________ nutrition.
A. holozoic B. endozoic C. saprozoic D. parasitic
When cells undergoing mitosis are exposed to colchicine, a chemical extracted from the autumn crocus
(Colchicum autumnale), cell division is suppressed. Specifically, at which stage of mitosis will the chromosomes be arrested?
a. anaphase b. interphase c. prophase d. telophase e. metaphase
Effects of deforestation illustrated by the Hubbard Brooks Experimental Forest include all of the
following except:a. soil erosion. b. leaching of essential nutrient minerals. c. decreased soil fertility. d. higher summer temperatures in previously shady streams. e. acid deposition.