Where Is Dystrophin,the Protein That Is Defective in Muscular Dystrophy,normally

question 24

Multiple Choice

Where is dystrophin,the protein that is defective in muscular dystrophy,normally found?

• A) Between the outermost myofilaments and the sarcolemma of a muscle fiber
• B) As a transmembrane protein of the sarcolemma
• C) In the Z discs of skeletal and cardiac muscle
• D) In the dense bodies of smooth muscle
• E) Bridging the gap between the sarcolemma and axon terminal

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Definitions:

Chordates

A large phylum of animals that, at some stage in their development, possess a notochord, a hollow dorsal nerve cord, and pharyngeal slits, including vertebrates like fishes, amphibians, reptiles, birds, and mammals.

Amphibian Heart

A three-chambered heart found in amphibians that consists of two atria and one ventricle, partially separating oxygenated and deoxygenated blood.

Oxygen-Rich

Referring to environments or substances with a high concentration of oxygen, such as certain atmospheric layers or oxygenated blood.