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Biology

A natural science concerned with the study of life or living matter in all its forms and phenomena, especially in relation to their origin, growth, reproduction, structure, behaviour and evolution.

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Biology > Anatomy

excretion

Biology; Anatomy

The act or process of discharging waste matter from the blood, tissues, and organs.

breathing

Biology; Anatomy

It is a process that moves air in and out of the lungs. Aerobic organisms like birds complete this process using air sacs.

chlamydia

Biology; Anatomy

A sexually transmitted disease caused by a parasitic bacterium that lives inside cells of the reproductive tract.

chitin

Biology; Anatomy

A polysaccharide contained in fungi; also forms part of the hard outer covering of insects.

chiasma

Biology; Anatomy

The site where the exchange of chromosome segments between homologous chromosomes takes place (crossing-over) (pl.: chiasmata).

cardiac cycle

Biology; Anatomy

One heartbeat; consists of atrial contraction and relaxation, ventricular contraction and relaxation, and a short pause.

chemotrophs

Biology; Anatomy

Organisms (usually bacteria) that derive energy from inorganic reactions; also known as chemosynthetic.