The Structural Explanation of How a Muscle Fiber Contracts Is

question 156

Multiple Choice

The structural explanation of how a muscle fiber contracts is called the

• A)myosin spiral theory.
• B)thin filament theory.
• C)sliding filament theory.
• D)cross-bridge connection.
• E)active site rule.

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Definitions:

Sex Pili

Hair-like appendages on the surface of bacteria used to transfer genetic material between cells during conjugation.

Exogenous DNA

DNA that originates outside an organism and can be introduced through viruses, horizontal gene transfer, or genetic engineering.

Spiracles

Small openings on the surface of some animals, especially insects, used for breathing.

Oxygen

A chemical element with the symbol O and atomic number 8, essential for most life forms on Earth as it is a key component of the respiratory processes of most living cells.