Question

the molecular interaction described as a cross bridge involves the binding of which two proteins? a and d a and c a and b b and d

Explanation:

In muscle contraction, cross - bridge formation occurs between actin (A) and myosin (C). Myosin heads (part of myosin in the thick filament) bind to actin (part of the thin filament) to form cross - bridges.

Answer:

A and C