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Myosin Protein Structure and Function Quiz

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Myosin Protein Structure and Function Quiz

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Questions and Answers

What is the composition of myosin?

2 heavy chains, 4 light chains, and 1 alpha helix

1 heavy chain, 2 light chains, and 2 alpha helixes

2 heavy chains, 2 light chains, and 2 alpha helixes (correct)

4 heavy chains, 2 light chains, and 2 alpha helixes

What is the role of the amino terminus of myosin?

Contains the domain for ATP hydrolyzation (correct)

Connects to actin filaments

Is responsible for muscle contraction

Forms the tail of the protein

What forms the thick filaments in muscle cells?

Aggregation of actin molecules

Aggregation of troponin molecules

Aggregation of myosin molecules (correct)

Aggregation of alpha helixes

What forms the thin filaments in muscle cells?

<p>F-actin + troponin + tropomyosin</p> Signup and view all the answers

Study Notes

Myosin Composition

Myosin is a hexameric protein composed of two heavy chains and four light chains.

Role of Amino Terminus

The amino terminus of myosin is the head region, which binds to actin and has ATPase activity.

Thick Filaments

Thick filaments in muscle cells are formed by the assembly of myosin molecules.

Thin Filaments

Thin filaments in muscle cells are formed by the assembly of actin molecules.

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Description

Test your knowledge of myosin protein structure and function in this quiz. Explore the composition of myosin, its role in cell transport and muscle contraction, and its subunit organization. Challenge your understanding of the amino and carboxyl terminus, heavy and light chains, and the supercoiled structure of this essential protein.