What is a defective phage?

A.
A virus that has lost some of its genetic material, and therefore cannot infect a new target cell

B.
A virus that has lost some of its genetic material, and therefore cannot replicate within a new target cell

C.
A virus that lacks the ability to replicate independently of its host cell

D.
A virus that cannot attach to its host cell


B

Biology & Microbiology

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These biological compounds are non-polar and insoluble in water:

A. proteins B. nucleic acids C. lipids D. carbohydrates

Biology & Microbiology

A culture performed on a vaginal specimen collected from a 60-year-old woman would likely grow primarily:

a. group B hemolytic streptococci. b. staphylococci and corynebacteria. c. Enterobacteriaceae, streptococci, staphy-lococci, lactobacilli, and anaerobes. d. G. vaginalis, Prevotella spp., Peptostrep-tococcus spp., and Mobiluncus spp.

Biology & Microbiology

The gradualistic model of speciation is supported by many transitional forms.

a. true b. false

Biology & Microbiology

Alternation of generations is a means of reproduction by (algae/ciliates/fungi/insects).

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

Biology & Microbiology