Which group has the fewest number of
described species?
a. fungi
b. gymnosperms
c. mammals
d. amphibians
e. insects
B
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A(n) ________ is an instrument used to separate subcellular structures and macromolecules on the basis of size, shape, and density. ________ developed this instrument in Sweden during the period 1925—1930.
Fill in the blank(s) with the appropriate word(s).
In some societies, the birth of a deformed child is regarded as a sign of impending war or famine
a. True b. False Indicate whether the statement is true or false
As a membrane becomes increasingly less permeable to a solute, the rate of diffusion for that solute will ________
a. increase. b. decrease. c. remain the same.
DNA replication
A) occurs through the addition of nucleotides to the end of the parental DNA molecule. B) results in the formation of four new DNA strands. C) uses each strand of a DNA molecule as a template for the creation of a new strand. D) begins when two DNA molecules join together to exchange segments.