The Central Dogma Has Been Challenged on Several Levels (E

question 33

Multiple Choice

The central dogma has been challenged on several levels (e.g. ,the discovery of RNA viruses,which use their RNA to directly synthesize proteins;and the discovery of reverse transcriptase,which makes DNA from RNA) .Which of the following is another example of an exception to the central dogma?

• A)DNA from viruses can insert themselves into host cell chromosomes.
• B)Chaperone molecules guide the folding of protein molecules.
• C)Gene mutations result in altered amino acid sequences of proteins.
• D)Prions are infectious protein molecules capable of altering the folding of normal proteins.

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Definitions:

Cortisol

A steroid hormone produced by the adrenal glands, often released in response to stress and low blood-glucose concentration, playing an important role in the body's fight-or-flight response.

Method of Transmission

The way in which a disease spreads from one individual or organism to another.

Biopsychosocial Model

A holistic approach to diagnosing and treating illnesses by considering biological, psychological, and social factors.