Examlex
What is the strategy used by many prokaryotes for obtaining their energy and their molecular building blocks directly from inorganic chemicals?
Zygote
The initial cell formed when a sperm cell fertilizes an egg cell, representing the earliest stage in the development of an organism.
Placenta
A vital structure that forms inside the uterus throughout pregnancy, supplying the fetus with oxygen and essential nutrients while eliminating its waste materials.
Fetus
A developing mammal or human from the completion of embryonic development to birth, characterized by rapid growth and the development of body structures.
Embryo
A stage in prenatal development after fertilization and before becoming a fetus, characterized by rapid cell division and the start of cell differentiation.
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