When calcium ion binds to troponin,
a) muscle relaxation occurs.
b) tropomyosin moves into the groove between the helical actin strands.
c) active sites on the myosin are exposed.
d) actin heads will bind to myosin.
e) myosin shortens.
Answer: B
When calcium ion binds to troponin,
a) muscle relaxation occurs.
b) tropomyosin moves into the groove between the helical actin strands.
c) active sites on the myosin are exposed.
d) actin heads will bind to myosin.
e) myosin shortens.