Examlex
According to the Lewis definition,a base is a(n) ___.
Sister Chromatids
Duplicated DNA structures connected by a centromere, identical genetic information, formed during the S phase of the cell cycle.
Nuclear Envelope
A double-membrane structure that encloses the nucleus in eukaryotic cells, separating the contents of the nucleus from the cytoplasm.
Plasma Membrane
The lipid bilayer membrane that surrounds the cytoplasm of a cell, regulating the passage of substances in and out of the cell.
Sister Chromatids
Identical copies of a chromosome, connected by a centromere, produced during DNA replication and present in a cell prior to cell division.
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