Crossbridge Cycle Quiz

Froggy Jumps

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Muscle contraction cycle basics

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nur husnina najma

Malasia

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Froggy Jumps Crossbridge Cycle QuizVersión en línea Muscle contraction cycle basics por nur husnina najma 1 Which molecule binds to the myosin head to allow detachment from actin at the start of a new cycle? a ADP b ATP c Pi (inorganic phosphate) 2 What initiates the power stroke that moves actin toward the sarcomere center? a Binding of ADP to actin b Release of inorganic phosphate (Pi) c Binding of ATP to myosin 3 What form is myosin in immediately before the power stroke? a Low-energy form (rigor-like) b High-energy form c ATP-bound form 4 What happens when ATP is hydrolyzed by the myosin head? a Pi is reattached to myosin b Actin depolymerizes c Myosin head becomes re-cocked for the next cycle 5 What event marks the cocking of the myosin head? a Hydrolysis of ATP to ADP and Pi b ADP release c Binding of ATP to actin 6 Which molecule is released to drive the detachment of myosin from actin? a Pi is released before the power stroke b ADP is released after the power stroke c ATP is released 7 What establishes the cycle by allowing myosin to rebind actin after detachment? a Ca2+ release b ATP binding to myosin head c ADP binding to actin 8 What state is the actin-myosin complex in during the power stroke? a Actin pulled toward middle of sarcomere b Actin is released from the sarcomere c Myosin is in the high-energy form

Froggy Jumps

Crossbridge Cycle QuizVersión en línea

Muscle contraction cycle basics

por nur husnina najma

Which molecule binds to the myosin head to allow detachment from actin at the start of a new cycle?

ADP

ATP

Pi (inorganic phosphate)

What initiates the power stroke that moves actin toward the sarcomere center?

Binding of ADP to actin

Release of inorganic phosphate (Pi)

Binding of ATP to myosin

What form is myosin in immediately before the power stroke?

Low-energy form (rigor-like)

High-energy form

ATP-bound form

What happens when ATP is hydrolyzed by the myosin head?

Pi is reattached to myosin

Actin depolymerizes

Myosin head becomes re-cocked for the next cycle

What event marks the cocking of the myosin head?

Hydrolysis of ATP to ADP and Pi

ADP release

Binding of ATP to actin

Which molecule is released to drive the detachment of myosin from actin?

Pi is released before the power stroke

ADP is released after the power stroke

ATP is released

What establishes the cycle by allowing myosin to rebind actin after detachment?

Ca2+ release

ATP binding to myosin head

ADP binding to actin

What state is the actin-myosin complex in during the power stroke?

Actin pulled toward middle of sarcomere

Actin is released from the sarcomere

Myosin is in the high-energy form

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Crossbridge Cycle Quiz

Froggy Jumps

Sobre esta actividad

Creada por

Descarga la versión para jugar en papel

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Crossbridge Cycle QuizVersión en línea

por nur husnina najma

Which molecule binds to the myosin head to allow detachment from actin at the start of a new cycle?

What initiates the power stroke that moves actin toward the sarcomere center?

What form is myosin in immediately before the power stroke?

What happens when ATP is hydrolyzed by the myosin head?

What event marks the cocking of the myosin head?

Which molecule is released to drive the detachment of myosin from actin?

What establishes the cycle by allowing myosin to rebind actin after detachment?

What state is the actin-myosin complex in during the power stroke?

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