When bacterial viruses are grown are cultivated with a lawn culture of bacteria in a Petri dish, they form zones of clearing called:

a. phage
b. plaques
c. pocks
d. lesions


Ans: b. plaques

Biology & Microbiology

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Organisms that feed on other organisms are known as _____ ______ ______ .

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

Biology & Microbiology

The biceps brachii is responsible for flexing the forearm while the triceps brachii extends the forearm. Muscles with such opposite actions are called

(a) cooperative. (b) antagonistic. (c) involuntary. (d) sensory.

Biology & Microbiology

True or false: All 64 possible triplet sequences in an mRNA are recognized by a nucleic acid molecule

A. true B. false

Biology & Microbiology

The genome of phiX174 is ________.

A. double-stranded RNA B. single-stranded RNA C. single-stranded DNA D. double-stranded DNA

Biology & Microbiology