Which of the following is not useful for producing proteins in large amounts?

A. bacteria
B. yeast
C. insect cells
D. mammalian cell culture
E. transgenic animals


D

Biology & Microbiology

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In biotechnology research, DNA fragments created by restriction enzyme action are separated from one another via

A) filtering. B) crossing over. C) gel electrophoresis. D) centrifugation. E) PCR.

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In Figure 8.4, the antibiotic chloramphenicol binds the 50S ribosome as shown. From this information you can conclude that chloramphenicol

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If two sister species on the phylogenetic tree above differ from the other two in a single character state (say dark or light fur), how many character state changes (evolutionary events) are needed to explain this pattern?

a. one c. three b. two d. four

Biology & Microbiology