Given below are some events which occur during muscle
contraction.
i. ATP is hydrolyzed.
ii. Myosin heads bind to actin.
iii. Hemoglobin concentration in muscle fibers
increases.
iv. Calcium concentration in the sarcomere increase.
v. I bands shorten and H zones disappear.
Select the correct events which occur during muscle
contraction.
(a) i only (b) ii, iii & iv only
(c) i, ii, iv & v only (d) All of these.
Answer:(c) Events i, ii, iv and v only occurs during muscle contraction. Concentration of myoglobin, red coloured oxygen storing pigment, in muscle fibres increases
