The amplification of recombinant plasmids occurs by:
a. the growth of the plasmid DNA.
b. DNA replication of plasmids outside a host cell.
c. the process of growth and division of the host cell.
d. transformation of bacterial cells.
e. the polymerase chain reaction
C
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Ome botanists argue that the entire plant should be considered as a single unit rather than a composite of many individual cells. Which of the following cellular structures cannot be used to support this view?
a. cell wall b. cell membrane c. cytosol d. tonoplast e. symplast
Both ionizing and nonionizing radiation tend to effect what?
A) DNA B) Cell membrane C) Cell wall D) Proteins
Which of the following act as the brakes of the cell cycle and prevent cells from dividing too quickly?
a. oncogenes b. proto-oncogenes c. cyclins d. tumor suppressor genes
Two moths with similar markings each produce a chemical that makes their bird predators sick to their stomach if eaten. Which principle of ecology does this demonstrate?
A) Müllerian mimicry B) Batesian mimicry C) commensalism D) mutualism