Question

question 4 (1 point)
how is the shape of the myostatin protein important for its function?
a myostatin is a protein and is able to change shape depending on where it is needed.
b myostatin must fit properly into a receptor in a cell so that muscles can grow normally
c myostatin is shaped like a hook to attach on to actin and then contract the muscle.
d myostatin is shaped like a braid or a rope so that actin can attach to it and pull the muscle.

Explanation:

Myostatin is a regulatory protein that controls muscle growth. Its function relies on binding to specific cell surface receptors, which requires it to fit properly into these receptors to carry out its role in limiting muscle development. Options a, c, and d describe incorrect functions and shapes unrelated to myostatin's actual mechanism.

Answer:

b. Myostatin must fit properly into a receptor in a cell so that muscles can grow normally.