Which of These Substances Does Not Have a Fused Four-Ring

question 25

Multiple Choice

Which of these substances does not have a fused four-ring structure?

• A) Testosterone
• B) Hydrocortisone
• C) Estrogen
• D) AZT
• E) Tetracycline

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Definitions:

Conditioning

The process of training or accustoming a person or animal to behave in a certain way or to accept certain circumstances.

Bell

A resonant device that produces sound when struck, typically used for signaling or alarm purposes.

Light

Electromagnetic radiation within a certain portion of the electromagnetic spectrum, visible to the human eye and fundamental to vision and various biological processes.

Extinction Trials

Processes in which a conditioned response is weakened by presenting the conditioned stimulus without the unconditioned stimulus.