Proto-Oncogenes Can Change into Oncogenes That Cause Cancer

question 45

Multiple Choice

Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells?

• A) Proto-oncogenes first arose from viral infections.
• B) Proto-oncogenes are mutant versions of normal genes.
• C) Proto-oncogenes are genetic "junk."
• D) Proto-oncogenes normally help regulate cell division.

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Definitions:

Aroused

A physiological and psychological state of being awoken or stimulated, often referring to sexual arousal but can also apply to emotions and physical states.

Orgasm

The peak of sexual excitement, characterized by strong feelings of pleasure and by a series of involuntary contractions of the muscles of the genitals.

Stress Hormones

Biochemical substances, like cortisol and adrenaline, released by the body in response to stress, impacting various bodily functions and emotions.

Constrict

To narrow or become narrower; to reduce the diameter or volume of a body part or passage.