Use the Following Information When Answering the Corresponding Questions)

question 6

Multiple Choice

Use the following information when answering the corresponding questions) .
Shuichi Nakano reported in Science in February 2000 that, "The RNA enzyme ribozyme) from hepatitis delta virus catalyzes self- cleavage of a . . . [chemical] . . . bond." This reaction is inherently slow due to the formation of an unfavorable negative charge on the ribozyme. The author goes on to show that this self- cleavage is made faster by joining it with an acid- base reaction that neutralizes the negative charge. Nakano's model describes a positively charged cytosine base on the ribozyme acting as the acid, and magnesium hydroxide acting as the base. Specifically, the cytosine donates its proton H+) to neutralize the unstable negative charge that would have formed on the ribozyme.
-In the acid- base reaction described in the preceding paragraph, a proton H+) is being transferred. What is acting as the proton acceptor?

• A) cytosine
• B) magnesium hydroxide
• C) the virus
• D) A, B, or C. Any one of these can act as the acceptor.

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Definitions:

Health Literacy

The degree to which individuals have the capacity to obtain, process, and understand basic health information and services needed to make appropriate health decisions.

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