Flashcards
Mitosis
Cards in this deck (12)
- 1Cell CycleThis starts after cell division and ends with the cell dividing
The M phase involves mitosis and cytokineses
Interphase has G1, S, and G2 phases each with a checkpoint - 2G1 phaseThe cell grows and new organelles and proteins are made
The checkpoint checks that all chemicals for cell division are needed and if there is any damaged DNA - 3S phaseCell replicates its DNA ready for mitosis
- 4G2 phaseCell keeps growing and making proteins needed for division
Checkpoint makes sure cell DNA has been replicated without damage - 5Reasons for meiosisIt can either be to repair damaged tissue or to grow the organism
- 6ProphaseChromosomes super coil and the centrioles move to the poles of the cell, forming a network of protein fibers called a spindle. The nuclear envelope breaks down and the chromosomes lie free in the cytoplasm
- 7MetaphaseChromosomes line up in the middle of the cell and their centromeres attach to the spindles, the cell now checks all chromosomes are attached
- 8AnaphaseThe centriomeres divide separating each pair of sister chromotids, the spindles contract, pulling chromotids to opposite ends of the cell
- 9TelophaseChromotids reach opposite poles where they uncoil
Nuclear enevelopes re-develop around each group and there are two nuclei
- 10CytokinesesThe cytoplasm divides forming a clevage furrow, dividing the membrane
There are now two identical daughter cells
It is a separate process to mitosis and happens from around anaphase to telopahse - 11ObservationYou can stain chromosomes and then view this under a light microscope, we can view plant root cells on a squash microscope
- 12Male and female chromosomesMales have the XY chromosome pair and females have XX
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- A-Level A Level Biology (Module 2.6) Flashcards on Mitosis , created by Reuben Veysey-Smith on 23/01/2016.
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- Reuben Veysey-Smith
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