| what does the RBC do? | transports oxygen, contrains haemoglobin |
| how is the RBC specialised | biconcave shape to increase the surface area to volume ratio, no nucleus to allow more haemoglobin |
| what do the ciliated cells contain | cilia (small hairs), sweep mucus into the mouth where it is swallowed |
| what does the sperm cells do | fuses with egg cells (fertilisation) and the zygote is produced |
| how to the sperm cell specialised | flagellum enables it to swim, contains many mitochondria which release energy to power long journey, the head contains acrosomes which contain enzymes which break down the outer layers of the egg. |
| how is the ovum specialised | jelly coat outer layerr of egg changes once penetrated by sperm |
| how is the root hair cell specialised | has root hair, increased surface area for aborbsion of water and mineral ions, water absorbed by osmosis |
| palisade mesophyll cell, how is it specialised? | contain lots of chloroplasts which absorb light in photosynthesis anbd make sugar, they are densely packed to maximise absorbstion of light |
