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Unit 6
Part 3- the cell cycle
| Question | Answer |
|---|---|
| cell cycle | regular pattern of growth, DNA duplication, and cell division in eukaryotic cells |
| mitosis | the division of the cell nucleus. includes Telophase, anaphase, metaphase, and prophase |
| cytokinesis | division of the cell cytoplasm |
| karyokinesis | division of the nucleus |
| Interphase | majority of the cell cycle which includes gap 1, synthesis, and gap 2 |
| Gap 1 | Where a cell carries out its normal functions and meeting checkpoints to divide |
| Synthesis | After G 1 a cell makes a copy of its nuclear DNA |
| Gap 2 | After synthesis a cell carries out its normal functions and meets certain checkpoints to continue division |
| prophase | The phase of mitosis where chromatin condenses,the nuclear envelope breaks down, the nucleolous disappears, centrioles and centrosomes go to opposite sides of the cell, and spindle fibers from centrioles radiate towards the center |
| metaphase | phase of mitosis where spindle fibers attach centrioles to the centromere of each chromosome and chromosomes line up along the equator of the cell |
| annaphase | phase of mitosis where the spindle fibers shorten pulling chromatids to opposite ends of the cell |
| telophase | phase of mitosis where a complete set of chromosomes is at each end of the cell and nuclear membranes and nucleolouses start to form. also the chromosomes uncoil into chromatin. |
| chromosome | A long string of DNA< each cell has 46 |
| gene | A section of DNA |
| histone | A group of proteins that DNA wrap around |
| chromatin | The loose combination of DNA and proteins |
| chromatid | One-half of a chromosome |
| sister chromatid | A chromatid similar to another |
| centromere | A region of condensed chromosome that holds together sister chromatids |
| centrosome | |
| centriole | |
| spindle fiber | |
| monad | |
| dyad | |
| metaphase plate | |
| telomere | caps on the ends ofchromatids |
| growth factor | |
| apoptosis | |
| cancer | |
| tumor | |
| benign | |
| malignant | |
| metastasize | |
| carcinogen | |
| asexual reproduction | |
| binary fission | |
| budding | |
| fragmentation | |
| prokaryote | |
| eukaryote | |
| unicellular organism | |
| multicellular organism | |
| tissue | |
| organ | |
| organ system | |
| cell differentiation/cell specialization | |
| stem cell |