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Flashcards by daniel.praecox, updated more than 1 year ago
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Created by jill.examtime
almost 12 years ago
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Copied by daniel.praecox
almost 12 years ago
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| Question | Answer |
| Mitosis | nuclear division in which one nucleus divides to form two nuclei, each containing identical sets of chromosomes |
| Each of the new nuclei formed in mitosis becomes enclosed within a cell | Daughter Cell |
| 5 stages of mitosis | Interphase Prophase Metaphase Anaphase Telophase |
| Interphase | cell is NOT dividing Longest Phase Chromatin |
| Chromatin | Elongated Chromosomes |
| Early part of interphase | Cell is active - making proteins, enzymes, organelles |
| Late stage of Interphase | chromosomes produce identical copies of themselves |
| Early in prophase | Chromatin starts to contract |
| Chomatin starts to contract | Chromosomes held together by centromere |
| During prophase | Nucleolus Disappears |
| Function of Nucleolus | Make Ribosomes |
| Spindle Fibres | Fibres appear in the cytoplasm during prophase |
| Nuclear Membrane in Prophase | Begins to break down |
| Nuclear membrane in metaphase | Completes its breakdown |
| Spindle Fibre during metaphase | Attaches to a centromere |
| Chromosomes during metaphase | Line up in the middle of the cell |
| Spindle fibres during Anaphase | Start to contract Pulling centromeres apart |
| number of chromosomes in the cell during anaphase | 8 chromosomes (4 at each pole) |
| Anaphase | Shortest phase of mitosis Can last minutes |
| Chromosomes during Telophase | Begin to lengthen Become hard to distinguish |
| Spindle fibre during Telophase | Begins to break down |
| Nucleolus during Telophase | Starts to re-form |
| Nuclear membrane during Telophase | Starts to form around two clumps of chromatin at each of the two poles |
| Nucleus at the end of Mitosis (Telophase) | Nucleus has divided into two identical Nuclei |
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