киселина

A comprehensive term for the various ways acidic compounds precipitate from the atmosphere and deposit onto surfaces. It can include: 1) wet deposition by means of acid rain, fog, ...

mezoderm

Biyoloji; Hücre biyolojisi

The middle layer of cells in embryonic development; gives rise to muscles, bones, and structures associated with reproduction. The middle embryonic tissue layer. Cells and ...

melanin

Biyoloji; Hücre biyolojisi

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.

mejoza

Biyoloji; Hücre biyolojisi

Cell division in which the chromosomes replicate, followed by two nuclear divisions. Each of the resulting gametes (in animals, spores in plants) receives a haploid set of ...

megaspore

Biyoloji; Hücre biyolojisi

Four haploid cells produced by meiosis in the ovule of a þower. Usually, three of these cells degenerate, with the remaining cell becoming the female gametophyte phase of the ...

moždina

Biyoloji; Hücre biyolojisi

1. A term referring to the central portion of certain organs; e. G. , the medulla oblongata of the brain and the adrenal medulla, which synthesizes epinephrine and norepinephrine. ...

makroevolucija

Biyoloji; Hücre biyolojisi

The combination of events associated with the origin, diversification, extinction, and interactions of organisms which produced the species that currently inhabit the Earth. Large ...

Terimler Haberlerde

Öne Çıkan Terimler

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sinod

A meeting of bishops of an ecclesiastical province or patriarchate (or even from the whole world, e. G. , Synod of Bishops) to discuss the doctrinal ...