For bacteriophages and animal viruses ________ is the step in the viral life cycle that determines host cell or tissue specificity

A) attachment
B) penetration
C) synthesis
D) assembly


Answer: A

Biology & Microbiology

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A disease that has a steady frequency over time in a particular geographic location is referred to as ________.

A. endemic B. chronic C. pandemic D. sporadic E. epidemic

Biology & Microbiology

Which sentence describes the relationship between sporophyte and gametophyte in the fern life cycle?

a. Gametophytes are photosynthetic and partially independent from the sporophytes. b. Both gametophytes and sporophytes are totally independent from each other and are equally dominant. c. Sporophytes originate within and are dependent upon gametophytes. d. Gametophytes are free living and photosynthetic, but are replaced by a dominant sporophyte generation.

Biology & Microbiology

Within which of the followmg peritoneal structures the splenic artery and vein can be found?

A. Lesser omentum B. Splenorenal ligament C. Gastrosplenic ligament D. Gastrocolic ligament E. Greater omentum

Biology & Microbiology

Genetic recombination allows bacterial cells to receive small amounts of ________ from other cells or from the environment.

A) protein B) DNA C) RNA D) cytoplasm

Biology & Microbiology