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Y7 Science C
Revision of Cells
| Question | Answer |
|---|---|
| What are the 7 life processes | 1 Movement2 Reproduction3 Sensitivity4 Nutrition5 Exceration6 Respiration7 Growth |
| Cell Division | When a cell splits in 2 the chromosones in the nucleus are copied and then pulled apart.Cell division can keep repeating |
| What 3 things do both animal cells and plant cells have? | Cell membrane,cytoplasm,nucleus |
| What 3 things does just a plant cell have? | chloroplast,vacuole,cell wall |
| What is the difference between an animal cell and a plant cell? | Animal cells have an irregular shape.Plant cells have a regular shape |
| Cell membrane | Controls what substances can get in and out of the cell |
| Cytoplasm | Jelly like substance where chemical reactions take place.In plant cells only a thin lining however in animal cells it takes up most of the cell. |
| Nucleus | Controls whats in the cell.Carries genetic information.Don't call it the brain of the cell. |
| Chloroplast | Where photosynthesis happens-chloroplast contains a green substance called chlorophyll |
| Vacuole | Contains a liquid called cel sap which keeps the cell firm |
| Cell Wall | Made of a tough substance called cellulose which supports the cell. |
| Red Blood Cell | To carry oxygen |
| Nerve cell | To carry nerve impulses to different parts of the body |
| Female reproductive cell(egg cell) | To join with the sperm cell and then provide food for the cell to be formed |
| Male reproductive cell (sperm cell) | To reach female egg and join it |
| Root hair cell | To obsorb water and minerals |
| Leaf cell | To obsorb sunlight for photosynthesis |
| Tissue | A luving cell is a group of cells all working in a group on a particular job |
| Give 5 examples of tissue | 1 muscle2 The lining of the intestine3 The lining of the lungs4 Pholeum(tubes to carry dissolved sugar around a plant)5 Root hair tissue(for plants to take up water and minerals from the soil) |
| Organ | An organ is made from a group of differnt tissues working on a job |
| Give 6 examples of organs | 1 heart2 lung3 stomach4 brain5 leaf6 root |
| Organ systems | A group of different organs working together to do a particular job. |
| Give 6 examples of an organ system | 1 circulatory system2 respiratory system3 digestive system4 nervous system5 reproductive system6 leaf canopy |
| Microscope | Cells are tiny so you have to use a microscope to see them |
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