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  3. the myosin cross-bridge cycle________. requires a

The myosin cross-bridge cycle________. requires ATP hydrolysis involves interaction of myosin heads and the actin filament cannot occur if...

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Medical Sciences

The myosin cross-bridge cycle________.

  1. requires ATP hydrolysis
  2. involves interaction of myosin heads and the actinfilament
  3. cannot occur if Ca++ is present
  4. a and b
  5. all of the above

Answer & Explanation Solved by verified expert
4.3 Ratings (559 Votes)
During a muscle contraction Thick myosin filaments and thin actin filaments slide across one another Zbands move closer together causing the sarcomere to shortenI bands appear narrow When a muscle is relaxed tropmyosin covers the binding sites    See Answer
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