Examlex
Which group of photosynthetic prokaryotes has bacteriochlorophyll and only one photosystem?
Zona Pellucida
A glycoprotein layer surrounding the plasma membrane of mammalian oocytes, crucial for fertilization.
Corona Radiata
A layer of cells that surround the oocyte, both in the ovarian follicle and after ovulation, playing a crucial role in fertilization.
Fertilization
The process involving the fusion of a sperm and an egg cell, leading to the formation of a zygote and initiating embryonic development.
Fertilization
The process of combining male and female gametes, leading to the formation of a zygote and the beginning of embryonic development.
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