Mitosis

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GCSE Biology Fichas sobre Mitosis , creado por Azlan Naeem el 22/04/2019.
Azlan Naeem
Fichas por Azlan Naeem, actualizado hace más de 1 año
Azlan Naeem
Creado por Azlan Naeem hace más de 5 años
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Pregunta Respuesta
What are the different stages in the cell cycle? Prophase, Anaphase, Metaphase, Telophase
Order the stages that occur during the cell cycle from first step to last. Interphase Prophase Metaphase Anaphase Telophase Cytokinesis
What happens duting mitosis? Identical daughter cells are produced through a methid called cell division that produces diploid cells.
What happens during interphase? ▪DNA replicates ▪some organells increase in number eg mitochondria & chloroplasts ▪protein synthesis
Why is Mitosis important? Growth Repair Replace
What happens during prophase? 1.Parent cell chromosomes condense 2. Mitotic spindle forms 3. Nucleolus disappears
What happens during metaphase? chromosomes line up in the middle
What happens during anaphase? chromosomes pull away to each side of the cell centromeres split into two and certain spindle tubers begin to elongate the cell
What happens during telophase? ▪chromosomes arrive at opposite poles and start decondesing ▪ nuclear envelopes surrounds each set of chromosomes ▪mitotic spindle breaks down
What happens during cytokinesis? n
What type of cells do not undergo mitosis? Nerve and sex cells
What would happen if cells were in mitosis longer than they were in interphase? It would result in uncontrolled cell division which could lead to cancer tumours forming
What percentage of the cell cycle are interphase and mitosis? 90% interphase 10% mitosis
In humans, how many chromosomes should be in each diploid cell after mitosis? 46
Why is mitosis important for organisms? 1. For growth 2. For repair 3. Asexual reproduction
Why do organisms rely on asexual reproduction? It is easier, faster, requires less energy, no need to find a mate, results in a fully matured organism that can care for itself
How do cancers grow? Cancers occur when cell division goes wrong. This causes cells to grow out of control, which form a tumour.
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