Examlex
If you walk at a constant pace across a room of known length,your walking speed is the room length divided by the time to cross the room.Now suppose you repeat your walk but briefly stop along the way to interact with people sitting along your path.What effect does this have on your average speed across the room? How is this analogous to light passing through glass? In what way is it not analogous?
Acrosome
A vesicle at the tip of a sperm cell containing enzymes that help the sperm penetrate the egg.
Umbilical Cord
A flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during gestation.
DNA
Deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the carrier of genetic information.
Three Stages of Birth
The labor process divided into three parts: dilation of the cervix, delivery of the baby, and delivery of the placenta.
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