What Happens During the Power Stroke of the Contraction Cycle

question 60

Multiple Choice

What happens during the power stroke of the contraction cycle?

• A) myosin head attaches to actin
• B) myosin head detaches from actin
• C) myosin head hydrolyzes ATP to ADP
• D) myosin head pivots from 90^o angle to 45^o angle

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Definitions:

Longitudinal Effects

Outcomes or impacts that can be observed over extended periods of time, often used to assess how certain variables or interventions influence development or behavior.

Butterfly Effects

The concept that small causes can have large effects, particularly in the context of a chaotic system, where minute variations in initial conditions can result in vastly different outcomes.

Teratogen

Any agent or substance that can cause malformation of an embryo or fetus.

Birth Defect

A physical or biochemical abnormality that is present at birth and that may affect bodily functions or appearance.