What kinds of solutes move straight through the plasma membrane easily and unassisted?
a. small polar molecules
b. small nonpolar molecules
c. ions
d. large polar molecules
b. small nonpolar molecules
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Many new species of desert lizards have arisen from a nonnative population which was introduced into the American
southwest. This example best describes:a. the effects of climatic change. b. sympatric speciation. c. allopatric speciation. d. adaptive radiation. e. microevolution.
Connective tissue is different from the other major tissue types in that ________
A) it is made up of cells B) the cells are sparsely scattered through an extracellular matrix C) it is not made up of cells D) it is found only in humans
The shoulder joint where the humerus meets the pectoral girdle is an example of a
A) hinge joint. B) ligament. C) pivot joint. D) ball-and-socket joint.
The K/T event was the transition of plants from water to land.
Answer the following statement true (T) or false (F)