What Can Scientists Study to Gain a Better Understanding of Prokaryotic

question 23

Multiple Choice

What can scientists study to gain a better understanding of prokaryotic life on Earth millions-if not billions-of years ago?

• A)microfossils of bacteria
• B)stromatolites and sediments
• C)carbon isotopes in limestone
• D)molecular (lipid)fossils
• E)All of these choices are correct.

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Definitions:

Behaviorism

A psychological perspective focusing on observable behaviors and the ways they're learned, rather than on internal mental processes.

John B. Watson

An American psychologist who is considered one of the founders of behaviorism; he emphasized the importance of observable behaviors over internal processes.

Operant Conditioning

A method of learning that occurs through rewards and punishments for behavior.

Voluntary Responses

Actions that are performed deliberately and with awareness, typically as a result of conscious decision making.