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Cell biology

The study of cell structure, physiological properties, interactions with the environment and life cycle.

Contributors in Cell biology

Cell biology

active transport

Biology; Cell biology

Transport of molecules against a concentration gradient (from regions of low concentration to regions of high concentration) with the aid of proteins in the cell membrane and energy from ATP.

ecological niche

Biology; Cell biology

The role an organism occupies and the function it performs in an ecosystem; closely associated with feeding.

chorion

Biology; Cell biology

The two-layered structure formed from the trophoblast after implantation; secretes human chorionic gonadotropin.

seed coat

Biology; Cell biology

The tough outer layer of the seed, derived from the outer layers of the ovule.

leaf primordia

Biology; Cell biology

Young leaves, recently formed by the shoot apical meristem, located at the tip of a shoot.

primary body

Biology; Cell biology

Those parts of a plant produced by the shoot and root apical meristems.

sympathetic system

Biology; Cell biology

The subdivision of the autonomic nervous system that dominates in stressful or emergency situations and prepares the body for strenuous physical activity, e.g., causing the heart to beat faster.

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