110809
| Frage | Antworten |
| red blood cell | bi concave to store more no nucleus to store more carry haemoglobin to make energy by carrying oxygen |
| muscle cell | made of protein strands which slide over eachother to make muscle contract have many nuclei |
| ciliated cells | move dust and mucus which has trapped bacteria away from the lungs cilia are the small extensions which beat rhythmically to sweep away dust and mucus |
| root hair cell | don't have chloroplasts because are underground and don't photosythesise absorbs minerals and water form soil long extension for surface area |
| nerve cell | can be over 2m so transmit impulses from nerves to brain over long distances connect the brain to muscles |
| sperm cell | only in animals streamlined tail for swimming small |
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