célula blanco

Unidad capaz de servir como fuente de tensión de corriente directa (CD) a través de la transferencia de iones en el transcurso de una reacción química.

célula

Arqueología; Evolución

The basic structural and functional unit of most living organisms. Cell size varies, but most cells are microscopic. Cells may exist as independent units of life, as in bacteria ...

célula

Antropología; Antropología física

A complex unit of protoplasm, usually with a nucleus, cytoplasm, and an enclosing membrane. All plants and animals are composed of one or more microscopic cells. The smallest ...

núcleo del átomo

Biología; Biología celular

An atom's core; contains protons and one or more neutrons (except hydrogen, which has no neutrons).

número atómico

Biología; Biología celular

The number of protons in the nucleus of an atom.

asma

Biología; Biología celular

A respiratory disorder caused by allergies that constrict the bronchioles by inducing spasms in the muscles surrounding the lungs, by causing the bronchioles to swell, or by ...

ascomicetos

Biología; Biología celular

Division of fungi that contains the yeasts and morels; ascomycetes produce an ascus (or sac) in which ascospores are produced.

selección artificial

Biología; Biología celular

The process in which breeders choose the variants to be used to produce succeeding generations.

reproducción asexual

Biología; Biología celular

A method of reproduction in which genetically identical offspring are produced from a single parent; occurs by many mechanisms, including fission, budding, and fragmentation.