The movement of water across a membrane from an area of lower solute concentration to a region of higher solute concentration is called ____.
a. osmosis
b. active transport
c. endocytosis
d. both diffusion and osmosis
e. both osmosis and active transport
D
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A testcross is a mating of an individual with an unknown genotype and an individual that Select one:
a. is homozygous dominant. b. is homozygous recessive. c. has a known genotype. d. is a wild-type. e. is heterozygous.
As a scientist, which of the following would you use as evidence to propose changing the traditional animal
phylogenies? a. fossil record b. molecular data c. predator-prey relationships d. newly discovered prokaryotes in soil e. better electron microscope pictures of cells
Recombinant DNA is
A. new nuclei. B. spliced DNA. C. a disease. D. All of these answers are true.
Bacteria, fungi, and plants cells use a gradient of _______ ions across their plasma membranes to drive transport of other molecules into the cells.
a. Na+ b. K+ c. H+ d. Ca2+