17795590
Description
Flashcards by Azlan Naeem, updated more than 1 year ago
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Created by Azlan Naeem
over 5 years ago
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| Question | Answer |
| 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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