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Chromosomes

Hold the instructions for making new cells
The daughter cells produced during the cell cycle must contain a copy of all these instructions, so they must contain a
FULL SET of chromosomes, copied exactly from the chromosomes in the parent cell.
They are in the nucleus of the eukaryotic…

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Prophase ­ replicated chromosomes supercoil (shorten and thicken), chromosomes already replicated in interphase.
They consist of a pair of sister chromatids. Centriole divided in 2 and they move to opposite ends of cell to form
spindle fibres.
Metaphase ­ replicated chromosomes line up, down the middle of the cell and…

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Cytokinesis

In animal cells cytokinesis starts from the outside ­ nipping in the cell membrane and cytoplasm along what is termed
a cleavage furrow.
In plant cells, cytokinesis starts with the formation of a cell plate where the spindle equator was.
The cell then lays down new membrane and cell…

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Both are human cells and each began with the same set of chromosomes, so each is potentially capable of carrying
out the same functions.
All blood cells are produced from undifferentiated stem cells in the bone marrow

The cells destined to become erythrocytes lose their nucleus, mitochondria, Golgi body and…

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Ciliated epithelial tissue ­ made up of column shaped cells. Often found on the inner surface of the tubes, e.g. trachea.
The part of the cell surface that is exposed in the tube space (lumen) is covered with tiny projections called cilia. Cilia
wave in a synchronized rhythm and move…

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