General

General

General nature or nature terms.

Industry: Natural environment

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General

microspore mother cell

Biology; General

Cells in the microsporangium that undergo meiosis to produce microspores. In flowering plants the microspore is known as the pollen grain, and contains a three-celled male.

melanin

Biology; General

A pigment that gives the skin color and protects the underlying layers against damage by ultraviolet light; produced by melanocytes in the inner layer of the epidermis.

melanocytes

Biology; General

The cells in the inner layer of the epidermis that produce melanin.

Four haploid cells produced by the meiotic division in the pollen sacs of flowers or microsporangia of gymnosperms. Microspores undergo mitotic division and become encased in a thick protective wall ...

membrane-attack complex (MAC)

Biology; General

A large cylindrical multiprotein complex formed by the complement system; kills invading microorganisms by embedding in their plasma membrane, creating a pore through which fluid flows, ultimately ...