According to the concept of ________, species evolve continuously over long spans of time.

Fill in the blank(s) with the appropriate word(s).


gradualism

Biology & Microbiology

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The building blocks of nucleic acids are

a. amino acids. b. nucleotides. c. pentose sugars. d. phosphate groups. e. nitrogenous bases.

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Which two plants of the Carboniferous period contributed to the formation of today’s coal deposits?

a. lichens and true mosses b. hornworts and liverworts c. horsetails and club mosses d. whisk ferns and true mosses e. angiosperms and gymnosperms

Biology & Microbiology

In some cases, viral infections of animals may __________.

A) cause cells to form capsules B) cause cells to produce invasive enzymes such as hyaluronidase and collagenase C) cause cells to produce endotoxin D) cause cells to lose contact inhibition

Biology & Microbiology

The signalling molecules that travel the farthest are

a. intracellular b. paracrine c. Hormones d. neurotransmitter

Biology & Microbiology