Restriction (enzymes/proteases/polymerases), first isolated from bacterial cells, cut DNA molecules at specific sites
What will be an ideal response?
enzymes
Bloom's Taxonomy: Knowledge
Section: The Tools of Recombinant DNA Technology
Learning Outcome: 8.8, 8.9
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A colony of mice is treated with a noninfective form of the bacterium Streptococcus pneumoniae. A
new researcher exposes this noninfective form to heat-killed cells of an infective strain. What would be the effect of this action in the mouse population?
a. The mice will all remain healthy. b. Some mice will die, but most will live. c. The mice will get sick with pneumonia. d. Some will get sick with pneumonia, but most will live. e. The mice will become immune to the bacterium.
Similar body parts that reflect shared ancestry are called __________. Fill in the blank(s) with the appropriate word(s)
The term amphipathic describes the characteristic of some molecules that have
A) two polar regions. B) only a single polar region. C) both a polar and a nonpolar region. D) no polar regions. E) two nonpolar regions.
What is the ultimate source of genetic variation within a population?
a. Mutations in DNA b. Adaptation of a species to environmental changes c. A sensory system that can detect an environmental change d. Homeostatic mechanisms that compensate for environmental changes e. A system of locomotion that allows an organism to escape environmental changes