The correct answer is the ship beagle I think I spelled that right
<span>Cross bridges are created when myosin heads bind to ATP. This phenomenon is basically muscle contraction at work. In order for myosin heads to be bound with ATP at the actin active site, it must be excited with Calcium.
Once myosin heads bind with ATP, it begins to slide and perform muscle contractions in the body, allowing a person to move.</span>
Answer:
Explanation:
Cell division.
The others are just to confuse you.
The answer is A because the males sperm determines the sex of a baby.The determines sperm is carrying an X or Y chromosome.
I had the same question and the answer was C OR A.
