Integration of the viral genome into host cell chromosomal DNA is required for the replication cycles of which virus(es)?

A. Herpesviruses
B. Retroviruses
C. Influenza viruses
D. Papillomaviruses


Ans: B. Retroviruses

Biology & Microbiology

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The slide coagulase test is a rapid screening test for the production of:

a. clumping factor. b. free coagulase. c. extracellular coagulase. d. catalase.

Biology & Microbiology

? Figure 38.17 Use the figure above to answer the following question. At what partial pressure of oxygen do half the heme groups in human blood have bound oxygen?

A. 30 mm Hg B. 100 mm Hg C. 70 mm Hg D. 104 mm Hg E. 120 mm Hg

Biology & Microbiology

The half-life of a molecule is the time it takes for 50% of the molecule to be broken down and recycled.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Triploblastic refers to animals that

A. form three blastopores in each blastula. B. form three separate blastulas from a single embryo. C. produce three eggs, each of which forms a single blastula. D. have a blastula composed of three cells. E. have three germ layers.

Biology & Microbiology