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STD 11 - 17. Locomotion and movement — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 17. Locomotion and movement1 Mark
MCQ
During muscle contraction, $ATP$ provides energy for
  • A
    Cross bridge detachment
  • B
    Building up action potential
  • C
    Releasing from sarcoplasmic reticulum
  • ✓
    Cross-bridge attachment of myosin to actin
✓

Answer

Correct option: D.
Cross-bridge attachment of myosin to actin
d
Cross-bridge attachment. When $ATP$ binds to myosin filament there is a detachment of myosin and actin filament. Due to detachment, the sliding (contraction) takes place and the hydrolysis of $ATP$ to $ADP$ takes place. In that step again, the cross bridge formation between actin and myosin takes place

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