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Mitosis
| Question | Answer |
|---|---|
| What is the first phase of mitosis? | Prophase |
| What is the second phase of mitosis? | Metaphase |
| What is the third phase of mitosis? | Anaphase |
| What is the fourth phase of mitosis? | Telophase |
| What is the term for the splitting of the cytoplasm to produce two identical daughter cells? | Cytoskenesis |
| What are all the phases of the cell cycle? | G1, S, G2, mitosis, cytokenesis |
| What term describes G1, S and G2? | Interphase |
| What 3 steps happen in the Prophase? | 1) Chromosomes condense 2) Centrioles move to the ends of the cell to form the spindle 3) The nuclear envelope breaks down and the chromosomes float free in the cytoplasm |
| What are centrioles? | Bundles of proteins |
| What is the spindle? | A network of protein fibres |
| What is the center of a chromosome called | Centromere |
| What happens during the Metaphase? | The chromosomes (each with 2 chromatids) line up along the spindle equator and attach by their centromere |
| What happens during the Metaphase checkpoint? | The cell checks that all the chromosomes are attached to the spindle before mitosis can continue. |
| What is the spindle equator? | The line along the middle of the spindel where the centromere attach during the Metaphase |
| What happens during the Anaphase? | The centromere divide to separate each pair of sister chromatids. The spindles contract, pulling the chromosomes to the ends of the cell centromere first. |
| During which phase does cytokenesis start? | The Anaphase |
| What happens during the Telophase? | 1) The chromatids reach opposite poles on the spindle. They uncoil and are now called chromosomes again. 2) A nuclear envelope forms around each group of chromosomes on opposite ends of the cell to form two nuclei |
| During which phase does cytokenesis end? | The Telophase |
| What is a cleavage furrow? | A fold that splits the cytoplasm. |