In this step in the identification of the colony
that contains a targeted gene,
a. bacterial cells are cloned.
b. bacterial colonies are transferred.
c. bacterial cells are ruptured.
d. DNA is lysed.
e. cells with the targeted gene are identified.
B
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The discovery that some bacteria ____ using enzymes that cut the viral DNA into pieces was one of the first steps in the development of recombinant DNA technology
a. exchange fused plasmid DNA b. restrict important nutrients from leaving the bacterial cell c. resist viral infection d. cut up and recycle mRNA transcripts e. attach amino acids to tRNA molecules
What are two ways that phage can replicate in harmony (not directly lysing) their host cell?
A. Conjugation and lysogeny B. Lysogeny and transduction C. Extrusion and transformation D. Extrusion and lysogeny
“Prebiotic soup” refers to ____
a. the interior contents of protocells b. the cytoplasm of early prokaryotic cells c. the mix of gases in the atmosphere that gave rise to the first organic molecules d. the polymerized slime coating ancient clay particles e. the accumulation of organic molecules that formed in the oceans before there was life on Earth
Four of the five indicate that evolution by natural selection is a plausible mechanism leading to the
diversity of species that have and do exist. Select the exception.
a. artificial selection b. Darwin's finches c. insect resistance to pesticides d. a parent's traits developed through life are passed on to offspring via natural selection e. biogeographical patterns in species