What is the purpose of the cyanogen bromide (CNBr) in the manufacture of insulin and somatostatin by recombinant bacteria?
A. Allows for the uptake of the plasmid
B. Enhances the activity of the restriction enzymes
C. Creates sticky ends for integration into the plasmid
D. Cleaves the protein from the b-galactosidase protein
D
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Compare the flow of energy and the flow of nutrients in ecosystems.
A. Both function in the same way, as both energy and nutrients get recycled in ecosystems. B. Both function in the same way, as both energy and nutrients come in and out of ecosystems. C. Energy is recycled within ecosystems, while nutrients come in and out of ecosystems. D. Energy comes in and out of ecosystems, while nutrients are recycled within ecosystems.
The speciation of cichlid fishes of the same African crater lake is an example of
a. divergence. b. parapatry. c. gene flow. d. allopatry. e. sympatry.
An endotherm is an animal that
a) regulates its body temperature by living underground b) does not regulate its body temperature c) regulates its body temperature by staying in the sun d) regulates its body temperature partly by generating its own body heat
In the following figure, which cell exhibits the condition of plant cells that have been placed in a hypertonic environment?
- Both a & b - b - a - c - Both b & c