Use the Following Information When Answering the Corresponding Question(s)

question 36

Multiple Choice

Use the following information when answering the corresponding question(s) .
Shu-ichi 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.
-Is Nakano's quote from Science consistent with the textbook's claim that RNA is a good candidate for the first life-form?

• A) yes
• B) no

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Definitions:

Media Liaison

The person or role responsible for managing communication and interactions between an organization and the media.

Trauma

A deeply distressing or disturbing experience, often resulting in lasting psychological impact.

Mental

Relating to the mind, cognitive processes, or psychological state of an individual.

Emotional State

The internal condition of an individual that involves feelings, moods, and temperaments, influencing perception and behavior.