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Science Notes #21
The Cell Cycle- Guided Reading Questions
| Question | Answer |
|---|---|
| Why is it important for your cells to replicate by the millions by the time you finish reading this sentence? | Producing new cells allows growing and it replaces dead cells |
| What is the life cycle of the cell known as? | The cell cycle |
| When does the cell cycle begin and end? | Begins when the cell is formed and ends when the cell divides to form new cells |
| How does each cell get its information for survival? | Cells make a copy of chromosomes to copy DNA |
| How many chromosomes pairs does each body cell contain? | 23 pair |
| What does homologous mean? | Same; matches |
| What do pairs of homologous chromosomes havein common? | Their bands match, they are the same size, and there are always 2 per pair. |
| In the beginning of the eukaryotic cell cycle, what does the cell do? | Grows and duplicates its organelles and chromosomes |
| Where are chromatids held together? | The centromere |
| What is not a part of mitosis? chromosome separation, 2nd stage of eukaryotic cell cycle, process of cell division, process of each cell getting a copy of each chromosome. | C |
| What forms a cell plate during the cell cycle? | Plant cells |
| What happens in the 3rd stage of a eukaryotic cell? | The cell divides and produces 2 identical cells. |
| What 2 paired cell structures are copied before mitosis? | Chromosomes and centrioles |
| Which phase of mitosis? The fibers attached to the centrioles pull the chromatids to opposite sides of the cell. | 3 |
| Which phase of mitosis? The chromosomes line up along the equator of the cell | 2 |
| Which phase of mitosis? The nucleur membrane forms around the 2 sets of chromosomes and the chromosomes unwind. The fibers disappear. | 4 |
| What is the first phase of mitosis? | The 2 pairs of centrioles move to opposite sides of the cell and fiber forms between them. The fibers attach to the centromere |
| How do animal cells and eukaryotic cells without cell walls divide their cytoplasm? | Beginning at the cell membrane, forms a pinch groove which goes all the way through and forms 2 daughter cells. |
| What creates 2 nuclei in eukaryotic cells? | Mitosis |
| What creates 2 cells in eukaryotic cells? | Cytokinesis |
| What doesn't perform mitosis and what does it do to replicate? | Prokaryotic cells; binary fission |
Created by:
rozeepozee9893
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