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Find the equation of the normal line to the given surface at the specified point.
Sperm Membrane
The outer layer of a sperm cell that protects genetic material and mediates its interaction with the egg during fertilization.
Selective Gene Expression
This describes the process by which certain genes are activated to produce a specific set of proteins in different cell types, conditions, or stages of development.
Cell Differentiation
The process by which a less specialized cell becomes a more specialized cell type, crucial in development and specialization of functions.
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