Attachment of a bacteriophage to its host requires

A. specific surface proteins on the bacteriophage and specific receptor molecules on the host cell.
B. nucleic acid protein interactions.
C. specific receptor molecules on the host cell.
D. specific surface proteins on the bacteriophage.


Answer: A

Biology & Microbiology

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Sexual reproduction produces genetically unique individuals through (select all correct choices):

A. recombination during gamete formation. B. independent assortment during gamete formation. C. mutation during gamete formation. D. the combination of genetically unique gametes to form a new individual. E. DNA transfer during conjugation.

Biology & Microbiology

A plasmid may

a. be used in recombinant DNA research. b. be transferred from one bacterium to another. c. carry foreign genes. d. replicate independently of bacterial chromosomes. e. do all of these

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Distinguish between sense and nonsense mutations and describe the characteristics of a protein affected by each type

of mutation. What will be an ideal response?

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Which protein binds to the silencer sequence and promotes transcriptional silencing in the presence of glucose?

A) Gal2 B) Mig1 C) Gal4 D) Gal10 E) Gal80

Biology & Microbiology