Cell Division and Cell Cycle

Warning, this goes a bit further then the AQA textbook, and the bits that are, are highlighted in red. I've used a combination of textbooks and revision guides to write this up, hopefully you'll find it useful. You'll see I got bored towards the end (it is 2am) :p 

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  • Created by: Marya
  • Created on: 10-04-12 00:57
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Cell Division and the Cell Cycle

The Cell Cycle

Interphase is made of 3 other smaller phases.

G1 Phase: proteins for cell organelles are synthesised and
produced. Volume of cytoplasm increases, new organelles
are made.

S Phase: DNA replication Centrioles are also replicated in this phase ­
one of the…

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Differentiation: Cells must differentiate in order to give specialised cells,
dividing by mitosis to give tissues of identical cells. Tissues can only be
efficient if all it's cells have the same structure/function.

Repair: New cells produced to replace old ones must have an identical
structure and function, to ensure that…

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pull away from each other except at the chiasmata. They non-sister chromatids break
and re-join: equal amounts of the chromatid being exchanged between one chromosome
and another, increasing the genetic variety.

Cancers are a result of uncontrolled cell growth. Mutations occur in the DNA of a cell,
causing it to…


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