Reverse transcriptase is found in the virions of some (DNA/-ssRNA/+ssRNA) viruses.
Fill in the blank(s) with the appropriate word(s).
+ssRNA
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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.
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.
Which organ is part of more than one organ system?
a. stomach b. liver c. pancreas d. intestine e. brain
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.