Question

One myosin filament in the myofibril of skeleton muscle fibres is surrounded by how many actin filaments.

• A. $8$
• B. $2$
• C. $6$
• D. $4$

Answer 1

The correct option is C $6$

Sarcomeres contain the contractile proteins myosin and actin, which are the proteins that bind during muscle contraction. Six actin filaments surround each myosin filament, and each actin filament is surrounded by three myosin filaments—an arrangement that gives muscle its striated appearance under magnification.

So, the correct option is '6'.