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General

General nature or nature terms.

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General

primary cell wall

Biology; General

The cell wall outside the plasma membrane that surrounds plant cells; composed of the polysaccharide cellulose.

promoter

Biology; General

The specific nucleotide sequence in DNA that marks the beginning of a gene.

phototrophs

Biology; General

Organisms that use sunlight to synthesize organic nutrients as their energy source; e.g., cyanobacteria, algae, and plants.

primary body

Biology; General

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

primary compounds

Biology; General

Chemicals made by plants and needed for the plant's own metabolism.

prophase

Biology; General

1) The first stage of mitosis during which chromosomes condense, the nuclear envelope disappears, and the centrioles divide and migrate to opposite ends of the cell. 2) The first stage of mitosis and ...

phototropism

Biology; General

The reaction of plants to light in which the plants bend toward the light. Plant response to light by unequal growth caused by concentration of the plant hormone Indole Acetic Acid (IAA, an auxin) on ...

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