puberty.
No, sperm are required for pregnancy.
Only one sperm is required to successfully fertilize an egg.
One sperm cell
Only one sperm cell is required to successfully fertilize an egg.
No; sperm is required to touch the vagina in order for pregnancy to be a possibility.
Oxygen, water, and life is required for life activity. Also ap-ma-spere<-(i couldn't spell it) is required, maybe...
Yes, sperm can travel through clothing during sexual activity, but the chances of pregnancy are lower compared to direct skin-to-skin contact.
Then you are probably a woman. If you are a male and have no sperm, than you are unable to procreate and have children. This does not mean you are not capable of participating in sexual activity.
The mitochondria located in the midpiece of the sperm cell generate the ATP required for movement of the sperm's tail. The mitochondrial sheath in the midpiece provides the necessary energy for the flagellum to beat in a whip-like motion, propelling the sperm forward.
the three factors that determine the energy cycle are solar power, electricity, and heat.
The potential risks associated with preejaculatory sperm during sexual activity include the possibility of pregnancy and the transmission of sexually transmitted infections (STIs) if the sperm comes into contact with the vagina or genital area. It is important to use protection, such as condoms, to reduce these risks.
No, sperm production begins automatically around puberty, regardless of sexual activity. Even a forty year old virgin will actively produce sperm.