The interaction between __________ can be described as the forming of cross-bridges.

Question

Quizplus · Accepted Answer

The formation of cross-bridges between actin and myosin is a key aspect of muscle contraction. When Ca2+ ions bind to troponin, this causes a conformational change that moves tropomyosin out of the way, exposing active sites on actin. Myosin heads then attach to these active sites, forming cross-bridges that allow for the sliding of actin filaments over myosin filaments. Therefore, option A is the best choice as it directly pertains to the cross-bridges formed during muscle contraction. The other options do not involve the direct interaction of actin and myosin.

The Interaction Between __________ Can Be Described as the Forming