Over Time, DNA Replaced RNA as the Primary Carrier of Genetic

question 17

Multiple Choice

Over time, DNA replaced RNA as the primary carrier of genetic information, and the chemical stability of DNA is believed to be the key reason for this. Which attribute of DNA is the reason behind its chemical stability?

• A) DNA lacks a free hydroxyl group on the 2'-carbon atom of its sugar.
• B) Unlike RNA, DNA is usually double stranded.
• C) DNA does not usually form hairpin loops.
• D) One of the two pyrimidines found in DNA does not involve uracil.
• E) DNA contains thymines, which make it more chemically stable.

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Definitions:

Parental Supervision

Involves monitoring and guiding children's activities, ensuring their safety and proper upbringing.

Superego

In Freudian psychoanalysis, the part of the personality that acts as a moral center, guiding behavior by internalizing societal and parental standards of right and wrong.

Preconscious Mind

Part of the mind that contains information not currently in consciousness but can be easily accessed and brought into awareness.

Id

In psychoanalytic theory, the part of the psyche that is the source of instinctual impulses and demands for immediate satisfaction of basic needs.