In the presence of an ovum, sperm become hyperactivated, they swim more vigorously, and the sperm's head releases enzymes to help it penetrate the protective layers of the ovum.
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Q105: Low birth weight infants:
A) are especially likely
Q106: Which of the following babies is at
Q107: Which of the following is one of
Q108: During the fetal period, all of the
Q109: Sperm travel for approximately 12 hours to
Q111: Low birth weight infants:
A) are generally healthy
Q112: The germinal period is also known as
Q113: In female embryos, no testosterone is released,
Q114: Prenatal care is a set of services
Q115: Implantation is the process in which the
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