Sperm become capable of fertilizing an egg through a process called capacitation, which occurs in the female reproductive tract. During capacitation, the sperm undergo physiological changes that enable them to penetrate and fertilize the egg. This includes changes in sperm membrane composition and increased motility.
Ameboid movement
spirochetes
Yes, sperm taken from the testes are capable of fertilizing an ovum. Usually this process is done In vitro Fertilization or IVF.
Sperm within the testicle itself are not capable of fertilizing an ovum on their own. They complete the maturation process in the epididymis.
Sperm cell.
spirochetes
Viable sperm is sperm that is capable of fertilizing an egg and resulting in, when combined with a viable egg, offspring. Hope this helps!
Sperm.
animate
Sporozoa
Skeletal or voluntary muscle is capable of rapid contraction and is responsible for skeletal movement.