One of the most intensively studied virulent phages which infects E. coli is

A. T9.
B. T4.
C. beta.
D. gamma.


B

Biology & Microbiology

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________ is a two-step process that depends on the activity of at least two genera to carry out the oxidation of ammonia to nitrate.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The nonprotein component of an enzyme that is firmly attached to the protein is called a(n)

A. holoenzyme. B. coenzyme. C. prosthetic group. D. apoenzyme.

Biology & Microbiology

Mutations may arise by replication error,

__________ activity, or exposure to environmental hazards. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of the following morphologies are seen among the Chloroplastida?

A. Sheet-like B. Unicellular C. Colonial D. Filamentous E. All of the choices are correct.

Biology & Microbiology