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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

circulatory system

Biology; Anatomy

One of eleven major body organ systems in animals; transports oxygen, carbon dioxide, nutrients, and waste products between cells and the respiratory system and carries chemical ...

chromosomes

Biology; Anatomy

Structures in the nucleus of a eukaryotic cell that consist of DNA molecules that contain the genes.

chromatin

Biology; Anatomy

A complex of DNA and protein in eukaryotic cells that is dispersed throughout the nucleus during interphase and condensed into chromosomes during meiosis and mitosis.

chromatid

Biology; Anatomy

Generally refers to a strand of a replicated chromosome; consists of DNA and protein.

chlorophyll b

Biology; Anatomy

An accessory chlorophyll found in green algae and plants.

chlorophyll a

Biology; Anatomy

The green photosynthetic pigment common to all photosynthetic organisms.

chlorophyll

Biology; Anatomy

The pigment in green plants that absorbs solar energy.