Question

How would this fast-troponin activator presumably work?

1) it would accelerate the activity of the myosin ATPase
2) it would create a sharper rise in the calcium transient in the muscle cell which would mean more contraction
3) it would make actin and myosin binding sites available for contraction at lower calcium concentrations
4) all of these

Answer 1

Fast-troponin activators work by accelerating myosin ATPase, increasing calcium transient, and making binding sites available at lower calcium concentrations.

Step-by-step explanation:

Fast-troponin activators work by accelerating the activity of the myosin ATPase, creating a sharper rise in the calcium transient in the muscle cell, and making actin and myosin binding sites available for contraction at lower calcium concentrations. All of these processes contribute to an increased muscle contraction.