Following Reports That the Amount of DNA Varied Over Time

question 27

Multiple Choice

Following reports that the amount of DNA varied over time within cells,scientists in the early 1900s concluded that the genetic material had to be

• A)DNA.
• B)RNA.
• C)protein.
• D)lipids.
• E)carbohydrates.

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Definitions:

Fight-Or-Flight Response

A physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival.

Epinephrine

A neurotransmitter in the brain and also a hormone that is released by the adrenal gland as part of the body’s response to stress; also called adrenaline.

Dopamine

A neurotransmitter involved in reward, motivation, and the regulation of mood and movement.

Reward

A benefit, often in the form of material or social gain, given in response to an individual's behavior or performance.