Three or Four of the Following Illustrations Depict Different Structural

question 53

Multiple Choice

Three or four of the following illustrations depict different structural isomers of the organic compound with molecular formula C₆H₁₄. For clarity, only the carbon skeletons are shown; hydrogen atoms that would be attached to the carbons have been omitted. Which one, if any, is NOT a structural isomer of this compound?

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Definitions:

Stretch Reflex

A muscle contraction in response to stretching within the muscle, part of the body's reflexive action to maintain posture and balance.

Antagonistic Muscles

Muscle pairs that work opposite each other; when one muscle contracts, the other relaxes, allowing movement in opposite directions.

CNS

The central nervous system, comprising the brain and the spinal cord.

Integration Center

A part of the nervous system, such as the brain or spinal cord, where information is processed and interpreted to initiate a response.