Which motor protein interacts with actin to produce contraction?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Anatomy and Physiology CFE Exam with our comprehensive quiz that covers key topics through flashcards and multiple choice questions. Study effectively and enhance your knowledge to succeed!

Multiple Choice

Which motor protein interacts with actin to produce contraction?

Explanation:
Contraction is driven when a motor protein uses energy from ATP to walk along actin filaments, pulling them and shortening the sarcomere. The motor protein that does this is myosin. Its heads bind to specific sites on actin, undergo a conformational change (the power stroke), and pull the actin filament past the myosin, causing sliding and overall muscle shortening. Actin forms the track, while tropomyosin regulates access to the binding sites and nebunlin (nebula) helps set thin-filament length. But only myosin provides the active force to contract the muscle by interacting with actin.

Contraction is driven when a motor protein uses energy from ATP to walk along actin filaments, pulling them and shortening the sarcomere. The motor protein that does this is myosin. Its heads bind to specific sites on actin, undergo a conformational change (the power stroke), and pull the actin filament past the myosin, causing sliding and overall muscle shortening. Actin forms the track, while tropomyosin regulates access to the binding sites and nebunlin (nebula) helps set thin-filament length. But only myosin provides the active force to contract the muscle by interacting with actin.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy