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Cell Cycle & Mitosis
Review of Cell Cycle and Mitosis
| Question | Answer |
|---|---|
| DNA gets copied in the cell cycle | S phase |
| phases of cell growth in the cell cycle | GI and G2 phase |
| "resting" phase ; describe a cell not dividing | G0 phase |
| 2nd step of mitosis ; chromosomes line up in center of cell | metaphase |
| G1, S, G2 together called this | interphase |
| 3rd step of mitosis; sister chromatids move to opposite poles in the cell | anaphase |
| division of the cytoplasm after mitosis | cytokinesis |
| division of the nucleus | mitosis |
| how many and type of cells made in mitosis | 2 identical daughter cells |
| last stage of mitosis ; nuclear membrane reforms | telophase |
| 1st step of mitosis; nucleus starts to disappear and chromosomes form "X" shape | prophase |
| holds 2 sister chromatids together | centromere |
| helps divided chromosomes only in animal cells | centrioles |
| "strings" that move and divide chromosomes in mitosis | spindle fibers |
| means 2 sets of chromosomes | diploid |
| fast and uncontrolled cell growth and division | cancer |
| when 3 critical checkpoints happen | near the end of G1 , G2, and mitosis |
| reasons that cells divide instead of get larger | too hard to remove waste and receive nutrients (food) |
| number of chromosomes in human body (somatic) cells | 46 |
| programmed cell death ; self-destruction that prevents cancer | apoptosis |
| cells that can develop into any cell in the body [is undifferentiated] | stem cells |
| stem cells that are NOT controversial ; can only develop into some cells | somatic (adult) stem cells |
| stem cells that are controversial; can develop into ANY cell in the human body | embryonic stem cells |
| means to become specialized ; from unspecialized to having a specific function | differentiate |