Indicate Which Type of Muscle Is Associated with the Property

question 259

Multiple Choice

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below:
-Contraction is triggered as Ca²⁺ physically pulls troponin and tropomyosin from its blocking position over actin's binding sites for the cross bridges.

• A)skeletal muscle only
• B)single-unit smooth muscle only
• C)cardiac muscle only
• D)skeletal muscle and cardiac muscle
• E)skeletal muscle and single-unit smooth muscle
• F)single-unit smooth muscle and cardiac muscle
• G)skeletal, single-unit smooth, and cardiac muscles

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Definitions:

Enantiomer

Molecules that are mirror images of each other but cannot be overlaid onto each other, much like left and right hands.

Meso Compound

A type of stereochemical isomer with multiple stereocenters that is superimposable on its mirror image, making it achiral despite containing chiral centers.

Diastereomers

Isomers that have a different spatial orientation of atoms but are not mirror reflections of each other.

Meso Form

A stereoisomer with multiple stereocenters that is superimposable on its mirror image, thus being optically inactive.