Interphase

OCR AS-level BiologyCell DivisionLesson 2 of 31

During interphase, the cell grows and carries out various metabolic processes. There are three main stages of Interphase:

G₁ - During the gap1 phase the cell assimilates new material, grows and develops. This can take hours, days, months or years.

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organelle: A membrane-bound structure within a cell with a specific structure suited to a specific function.
mitochondrion: An organelle with a double membrane, the inner one folded into cristae, that is the site of aerobic respiration and ATP production.
chromatin: The complex of DNA loosely coiled around histone proteins found in the nucleus between cell divisions.
ATP: Adenosine triphosphate, a nucleotide that acts as the immediate energy source of a cell, releasing energy when hydrolysed to ADP and inorganic phosphate.
mitosis: Nuclear division producing two daughter nuclei that are genetically identical to the parent nucleus, used in growth, repair and asexual reproduction.