Sentence examples for sperm cell from inspiring English sources
In normal fertilization, sperm cell proteins trigger the egg to divide.
The secondary sperm cell still must mature before it can fertilize an egg; maturation entails certain changes in the shape and form of the sperm cell.
The molecule – named Juno after the Roman goddess of fertility – sits on the egg surface and binds with a male partner on a fertilising sperm cell.
Eggs must combine with sperm or die, they write, and an organism "was never itself a sperm cell or an ovum".
And a sperm cell is absurdly dwarfed by its female counterpart, the egg, which, fittingly or not, is among the biggest cells in the body.
This may help explain why as soon as an egg is fertilised by one sperm cell it puts up a barrier against others.
After a resting phase the primary cells divide into a form called a secondary sperm cell.
The choanocyte containing the sperm cell fuses with the egg, thus achieving fertilization.
An unfertilised egg can therefore have only an X chromosome, but a sperm cell can have either.
The sperm cell as a foreign cell to the body might be engulfed by leukocytes.
A famous drawing from 1695 showed an example of such a homunculus nested within a sperm cell (Fig. 1).
