The following steps occur during biosynthesis of a + strand RNA virus. What is the third step?
A) attachment
B) penetration and uncoating
C) synthesis of - strand RNA
D) synthesis of + strand RNA
E) synthesis of viral proteins
C
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Inhibitors of protein synthesis typically key on
A. peptidoglycan precursors. B. penicillin-binding proteins. C. ribosomes. D. porin proteins.
Which interval is classified as a “period” in the geologic time scale rather than an “era”?
a. Mesozoic b. Proterozoic c. Carboniferous d. Cenozoic e. Paleozoic
At high population density, __________ is favored, with organisms investing more time and energy in fewer, higher quality offspring.
Fill in the blank(s) with the appropriate word(s).
The exact composition of ________ media is known. _______ media inhibit the growth of some microbes. ________ media are used to culture fastidious microbes, particularly pathogens
a. complex / Differential / Selective b. complex / Enriched / Differential c. defined / Selective / Enriched d. defined / Enriched / Differential