Reverse transcriptase is found in the virions of some (DNA/-ssRNA/+ssRNA) viruses.

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


+ssRNA

Biology & Microbiology

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A breath test assaying for radioactive carbon dioxide may be used to indicate the presence of

A. E. coli. B. Pseudomonas. C. Streptococcus pyogenes. D. Helicobacter pylori.

Biology & Microbiology

Ribose is an important component of RNA because

A) it is less stable than deoxyribose, which enables RNA to function as a short-term carrier of genetic information. B) it is less stable than deoxyribose, which enables RNA to function as a long-term carrier of genetic information. C) it is more stable than deoxyribose, which enables RNA to function as a long-term carrier of genetic information. D) it is as stable as deoxyribose, which makes RNA and DNA functionally equivalent.

Biology & Microbiology

Which organ is part of more than one organ system?

a. stomach b. liver c. pancreas d. intestine e. brain

Biology & Microbiology

In contrast to the lesions associated with other skin disorders, the lesions associated with smallpox:

A) are identical in size and shape. B) remain isolated to the facial area. C) originate on the lower extremities. D) are in various stages of development.

Biology & Microbiology