The striations in striated muscle correspond with actual molecular structures. Which of the following is the Z line?

a band where only actin molecules are found

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a band where only myosin molecules are found

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an attachment point for actin moleculesa

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an attachment point for myosin molecules

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Solution

The correct option is C
an attachment point for actin moleculesa

Actin molecules are bound to the Z line, which forms the borders of the sarcomere.

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Similar questions

Q. A myosin molecule has only one actin binding site.

Q. Choose the option having all the correct statements:
I. Thin and thick filaments consist of myosin and actin, respectively.
II. The H-zone and I-band consists of only myosin and actin, respectively.
III. A-band contains both actin and myosin.
IV. M-line and Z-line are in the middle of thin and thick filaments, respectively.

A myosin molecule has________ ATP binding sites and ________actin binding sites

Q. State whether the following statements are true or false.
Involuntary muscles have no myosin or actin since they lack striations.

During an action potential, calcium is released into the sarcoplasm, near the actin and myosin molecules. Which of the following is the best explanation of what the calcium does?

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The striations in striated muscle correspond with actual molecular structures. Which of the following is the Z line?

The correct option is C an attachment point for actin moleculesa Actin molecules are bound to the Z line, which forms the borders of the sarcomere.

The correct option is C
an attachment point for actin moleculesa

Actin molecules are bound to the Z line, which forms the borders of the sarcomere.