enlace covalente

enlace covalente

A chemical bond created by the sharing of electrons between atoms.

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Pramonės šaka / sritis: Biology
Category: Cell biology
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enlaces covalentes

Chemistry; General chemistry

Cuando dos átomos comparten al menos un par de electrones.

enlace covalente polar

Biology; General

A covalent bond in which atoms share electrons in an unequal fashion. The resulting molecule has regions with positive and negative charges. The presence of polar covalent bonds ...

núcleo del átomo

Biology; Cell biology

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

número atómico

Biology; Cell biology

The number of protons in the nucleus of an atom.

asma

Biology; Cell biology

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

Biology; Cell biology

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

selección artificial

Biology; Cell biology

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

reproducción asexual

Biology; Cell biology

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