specialised cells

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  • Created by: leah
  • Created on: 14-04-14 13:35

erythroctes

erythrocyte is a red blood cell

erthrocytes contain many haemoglobin that holds O2 their shape is biconcave which maximises surface area and so the speed of movement of oxygen.

erythroctes are mande in bone marrow and have a life span of 120 days they are 7 micrometres in size and the SA:V is large thus oxygen can diffuse into the cell quickly and bind to the haemoglobin as the cell is so small this also means they can diffuse out of the cell into the muscles and tissues easily also. they are very flexible allowing them to move through capilarys and vessels quickly and effeciciently also meaning more of them can be transported at a time they have very little organelles making more room for the haemoglobin and oxygen molecules.

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Sperm Cells,guard cells and neutrophil

Sperm cells are specialised for their function as they have undillipodia this is to help them move efficiently and quickly they also move by ATP energy therefore the cell has a large amount of mitochondria. Acrosome releases enzymes to penertrate the egg cell

Guard cells are specialised for ther function because when they are flaccid they close up the stomata preventing water loss when the cell is turgud they allow the stomata to open up and allow CO2 to enter the plant for photosynthesis.

neutrophil are specialised for their function as they have a large amount of lysosomes that contain enzymes that kill ingested cells it makes the cytoplasm appear grannular and has a lobbed nucleus allowing flexabiliy

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cilliated epithelium, palisade cell and root hair

cilliated epithelium have hairs on the surface allowing cells to sweep away debris keeping organs clean and healthy especially key for within the lungs

palisade cells are long thin they have large amonts of chlorophyll and a long shape for maximum light absorbtion

root hair cells have a large surface area therefore more water and minerals can be absorbed they have large amounts of mitochondiria for atp production and for active transport

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