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MC - Mitosis
Multicellular Organisms - Producing new cells
| Question | Answer |
|---|---|
| Why do multicellular organisms need to carry out cell division? | for growth and repair of damaged cells |
| What word describes a cell with 2 matching sets of chromosomes? | diploid |
| Why is it important that the new daughter cells have the same number of chromosomes as the original parent cell? | to maintain the chromosome complement |
| Describe the chromosomes in the first stage of mitosis. | thread-like structures |
| What happens to the chromosomes during stage 2 of mitosis? | they condense and replicate |
| What happens to the nuclear membrane during stage 2 of mitosis? | starts to break down |
| Where do the chromosomes line up during stage 3 of mitosis? | equator (middle) of the cell |
| What attaches to the chromosomes during stage 3 of mitosis? | spindle fibres |
| What do the spindle fibres pull apart during stage 4 of mitosis? | chromatids |
| What reforms around the groups of chromosomes during stage 5 of mitosis? | new nuclear membrane |
| What starts to happen to the cytoplasm during stage 5 of mitosis? | divides |
| What is produced during stage 6 of mitosis? | 2 new identical diploid daughter cells |
| If a parent cell has 16 chromosomes, how many chromosomes will each of the daughter cells have? | 16 |
| If a single mother cell goes through 5 rounds of division, how many daughter cells will be produced? | 32 |
| If a single mother cell goes through 7 rounds of division, how many daughter cells will be produced? | 128 |
| What happens after the following statement: 'Chromosomes line up at the equator and spindle fibres form' | Spindle fibres pull chromatids to opposite poles |
| What happens after the following statement: 'Spindle fibres pull chromatids to opposite poles' | Nuclear membrane reforms around chromosomes, cytoplasm divides |
| What happens before the following statement: 'Chromosomes line up at the equator and spindle fibres form' | Chromosomes condense and replicate, nuclear membrane breaksdown |
| Why is it important to maintain the diploid chromosome complement? | To ensure that no genetic information is lost. |
| Why would a damaged skin cell go through mitosis. | To repair the damaged skin. |
| Calculate the number of times the single skin cell would have to divide to form 128 cells in total. | 7 |
| Calculate the number of times the single skin cell would have to divide to form 32 cells in total. | 5 |
| Calculate the number of times the single skin cell would have to divide to form 16 cells in total. | 4 |
Created by:
StNiniansHS
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