Which of These Statements Does NOT Correctly Describe Cross Bridges

question 130

Multiple Choice

Which of these statements does NOT correctly describe cross bridges?

• A)They are the globular heads of myosin molecules.
• B)They have actin binding sites that are normally covered by troponin and tropomyosin, except during excitation-contraction coupling.
• C) They bind with actin and then bend to pull the thin filaments inward during contraction according to the sliding filament mechanism.
• D) They require Mg²⁺ to bind ATP to them.

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Definitions:

Chronological Progress Reports

Reports that document the progression of activities or events in the order they occurred over a period of time.

Measurable Statements

Statements that can be quantified or assessed through specific metrics, allowing for tangible evaluation of progress or success.

Original Schedule

The initial plan or timetable for events or tasks before any changes or adjustments are made.

Primary Research

Research that gathers new information.