Biology, 14.02.2020 03:44 kactus

What is a cross-bridge?
a. a protein found along the groove of the F-actin double helix
b. a T tubule and two adjacent terminal cisternae
c. the combination of myosin heads with active sites on actin molecules
d. the movement of myosin head while attached to actin myofilament
e. after exercise, the oxygen taken in that exceeds the oxygen required for resting metabolism

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What is a cross-bridge?
a. a protein found along the groove of the F-actin double helix