Each myosin molecule has a tail terminating in:
Correct answer: A. Two globular heads
- A. Two globular heads
- B. Two linear heads
- C. A globular head
- D. A linear head
Explanation
Option A is correct.Each myosin molecule has a long, rod-shaped tail that is made up of two myosin-heavy chains. The tail of the myosin molecule is responsible for the thick filament's structure. At the end of the myosin tail, there are two globular heads. The globular heads are responsible for binding to the actin filaments and generating force. The two globular heads of the myosin molecule are connected by a flexible neck region. This neck region allows the myosin heads to move and rotate.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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The diameter of thick filament is:
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