Examlex
Which of the following is correct?
Embryo
An early stage of development for multicellular organisms. In humans, it refers to the period from conception to the eighth week of pregnancy.
Acrosome
A cap-like structure over the head of a sperm cell that contains enzymes critical for egg penetration during fertilization.
Menstrual Period
A recurring cycle in women and female mammals involving the shedding of the uterine lining, typically lasting between 24-35 days.
Conception
The process of becoming pregnant involving fertilization or the implantation of an embryo in a female's uterus.
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