cian.buckley+1
Mind Map by , created more than 1 year ago

A simple mind map for A-Levels Biology. It gives a simple explanation for division of cells.

4201
53
0
cian.buckley+1
Created by cian.buckley+1 about 11 years ago
Rate this resource by clicking on the stars below:
1 2 3 4 5 (9)
Ratings (9)
3
2
2
1
1

0 comments

There are no comments, be the first and leave one below:

Close

A-Level Biology: Cell Division

A-Level Biology: Cell DivisionCell DivisionOccurs in the nucleus ofeukaryotic cells by mitosis andmeiosisReplacement of the entire lining of your smallintestineLiver cells only divide forrepairingNerve cells do notdivideChromosomesLong and thin for replication anddecodingBecome short and fat priormitosiseasier to separate due to compactformMeiosis (reductiondivision)The CellCycleMitosisDuring the production of sex cells (gametes) in animalsIn spore formation which precedes gamete production in plantsHaploid gametes (sperm ovum) - sexual reproductionDNA in a cell replicates only once, but cell divides twiceInterphaseG0M-PhaseG1: Protein synthesis and growth (10 hours)Preparation for DNA replication (e.g. growths of mitochondria)Differentiation, only selected genes are usedto perform different functions in each cellS: DNA Replication (9 hours)G2: short gap before mitosis, organellesand proteins for mitosis are made (4 hours)Resting phase (nerve cells)Mitotic division of the nucleus (Prophase,Metaphase, Anaphase, Telophase)Cytokinesis (division of the cytoplasm)Process of producing 2 diploiddaughter cells with the same DNA bycopying their chromosomes (clones)Chromosomes can be grouped into homologous pairsMitosis occurs in:GrowthRepairAsexual replacementReplacement of cells with limitinglife span (red blood, skin cells)Controlled process, cancers result fromuncontrolled mitosis of abnormal cellsDivision of the nucleus (karyokinesis) and thecytoplasm (cytokinesis) are two processes of mitosisDivision of cytoplasm after nucleus. Delayedif cells have more than one nucleus (muscle)Active process that requires ATPPhasesProphaseMetaphaseAnaphaseTelophaseDouble click this nodeto edit the textClick and drag this buttonto create a new node