Which of the following best describes the term Z line

A) largely made of myosin molecules

B) protein that accounts for elasticity of resting muscles

C) thin filaments are anchored here

D) repeating unit of striated myofibrils

E) storage site for calcium ions

Question

Biology

Cohen Henry

13 May, 11:24

Which of the following best describes the term Z line

A) largely made of myosin molecules

B) protein that accounts for elasticity of resting muscles

C) thin filaments are anchored here

D) repeating unit of striated myofibrils

E) storage site for calcium ions

+1

Answers (1)

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Frodo · Answer 1

The correct answer is: C) thin filaments are anchored here

The basic unit of striated muscle tissue is sarcomere. The borders of the sarcomere are Z lines where the thin molecules (actin) bind. I-band is the zone that contains only thin filaments. H-band is the zone of only thick filaments (myosin). The A band is the zone in the center of the sarcomere where thick and thin filaments overlap.

Which of the following best describes the term Z lineA) largely made of myosin moleculesB) protein that accounts for elasticity of resting musclesC) thin filaments are anchored hereD) repeating unit of striated myofibrilsE) storage site for calcium ions

Which of the following best describes the term Z line

A) largely made of myosin molecules

B) protein that accounts for elasticity of resting muscles

C) thin filaments are anchored here

D) repeating unit of striated myofibrils

E) storage site for calcium ions