Presentation on theme: "Red blood cells Red Blood Cells Structure: Large surface area"— Presentation transcript:
1 Red blood cells Red Blood Cells Structure: Large surface area Contains haemoglobin which picks up oxygenHas no nucleus to make room for more oxygenFunction:Carries oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.
2 Red blood cells White Blood Cells Function: These cells are found in your blood.They are attracted to diseases and bacteria that enter your bodyThey then ‘eats’ any bacteria/disease so the microbe can’t infect you and make you ill
3 Nerve cells Nerve Cells Structure: Function: These are extremely elongated (long) cellsThey have many branches at both ends to connect to other nerve cellsThe long axis (main branch) is covered in fat to prevent the electrical impulses affecting the surrounding parts of your bodyFunction:To carry nerve impulses around your body
4 Sperm cells Sperm Cell Structure: Have a long tail so they can swim to find an eggThere are enzymes (like scissors) in the head of the sperm to help the sperm get into the eggMade in the testis of malesFunction:To carry the father’s genetic information (DNA) to the egg
5 Sperm cells Muscle Cell Structure: Arranged in bundles called muscle fibresFunction:Can contract which makes the fibres shorter and causes bones to move or helps substances move around the body.
6 Sperm cells Bone Cell Function: Collect calcium from food and allow the growth and repair of bonesThey build up bone around themselves, creating the body’s skeleton.
7 Sperm cells Fat Cell Structure: Have a large vacuole in which to store fat moleculesFunction:Protection of vital organsInsulationLong-term energy storage
8 Root hair cells Root Hair Cell Structure: Large surface area to absorb lots of waterThin cell wall to allow water to pass through easilyDoesn’t contain any chloroplasts unlike all other plant cellsFunction:Absorbs minerals and water from soil
9 Palisade Cell Palisade Cell Structure: Found in the top of a leaf Tall and has a large surface area to catch as much sunlight as possiblePacked with chloroplasts to absorb sunlightFunction:to carry out photosynthesisto help make plant food.
10 Ciliated Cell Structure: They line all the air passages down to the lungs.They have tiny hairs called cilia.Function:Designed to stop Lung DamageHairs sweep mucus with trapped dust and bacteria back up the throat to be swallowed.If you smoke then the hairs die and the mucus builds up leading to the well known smoker’s coughNucleuscilia
11 Egg Cell Egg (Ovum) Cell Structure: Contains yolk that acts as a food source for the developing embryo (baby) when fertilisedMuch larger than other animal cells (look at the size of the sperm next to it!)Function:Carries the mother’s DNACytoplasm containing yolkLayer of jellyNucleus