Function of ATP in muscle fibres is

MCQ

Function of $ATP$ in muscle fibres is

A
It acts as an enzyme
B
It keeps the muscle supple and extensible
C
It is essential for subsequent contraction of rigid muscles by providing energy
✓
$(b)$ and $(c)$ both

✓

Answer

Correct option: D.

$(b)$ and $(c)$ both

d
(d) In living muscle fibres $ATP$ performs a dual role. At rest when myosin is not acting as an enzyme $ATP$ keeps the muscles supple.

And extensible and when stimulated muscles becomes rigid and then $ATP $ provides energy for their contraction.

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$R$ : Gap junctions facilitate the cells to communicate with each other.

$I.$ Oxygen is carried by haemoglobin

$II.$ Oxygen is carried by carbonic anhydrase

$III.$ $C O_{2}$ is carried by haemoglobin

$IV.$ $SO _{2}$ is carried by haemoglobin

$V.$ Only oxygen is transported by the blood

$VI.$ Only $C O_{2}$ is transported by the blood

Choose the correct option