Generally, an atom carries no charge because it has as many electrons as
a. neutrons.
b. orbitals.
c. shells.
d. protons.
e. neutrinos.
D
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Which of the following allows cells to recognize each other?
a. Glycolipids b. Protein channels c. Carbohydrates d. Cholesterol
Which evolutionary process is most pronounced in small populations where statistical fluctuations in allele frequencies can be significant from one generation to the next?
A) natural selection B) migration C) mutation D) random genetic drift E) population genetics
In the context of biodiversity, genetic diversity consists of
A. the amount of genetic variation that occurs between species B. the amount of genetic variation that occurs within and between species C. the amount of genetic variation that occurs within and between populations D. all the alleles and transcription factors within a species E. the amount of genetic variation that occurs in an individual
Advances in molecular systematics show that whisk ferns and horsetails are the closest living relatives of
A. mosses. B. seed plants. C. club mosses. D. ferns. E. gymnosperms.