Once the myosin head has become attached to the actin filament:
Correct answer: B. ATP is hydrolyzed and the bridge goes to its cycle
- A. ATP is synthesized and the bridge goes to its cycle
- B. ATP is hydrolyzed and the bridge goes to its cycle
- C. ATP is synthesized and the bridge becomes fixed
- D. ATP is hydrolyzed and the bridge becomes fixed
Explanation
Muscle contraction is a highly active process and ATPs are consumed at each step i.e. making a bond with the actin filament, moving or bending, and detaching from the actin filament.
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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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