Answered: The protein whose removal enables…

The protein whose removal enables myosin to bind actin in smooth muscle is: (pick one from 1-5). 1. caldesmon 2. myosin light chain kinase 3. tropomyosin. 4. synapsin 5. calmodulin

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter32: Structural Support And Movement

Section: Chapter Questions

Problem 8SA

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Concept explainers

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.

Question

The protein whose removal enables myosin to bind actin in smooth muscle is: (pick one from 1-5).

1. caldesmon

2. myosin light chain kinase

3. tropomyosin.

4. synapsin

5. calmodulin

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The _____ is the basic unit of muscle contraction. a. myofibril b. sarcomere c. muscle fiber d. myosin filament
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Pick the right order for muscle contraction a) ATP attaches to myosin, muscle cell uses calcium, action potential spreads b) Calcium release, binding sites on actin are exposedmyosin binds to actin c) Myosin binds to actin, myosin uses calcium, cell gets shorter d) Action potential is received , cell gets shorter, myosin grabs actin
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