Sperm cell - Enzymes in its head to break down the outer layer of the egg. Lots of mitochondria to release lots of energy from respiration.. Nucleus contains half of the DNA of a normal body cell., Red blood cell - Biconcave disk shape gives it a large surface area so that more oxygen can diffuse across its surface. It has no nucleus so it has more space to carry oxygen. It contains red haemoglobin which binds to oxygen., Nerve cell - Long and thin so that it can stretch long distances around the body. Lots of branches so that it can connect to many other cells., Cilliated cell - Hair like projections on the surface that trap mucus and nicroorganisms and waft them out of your airway., Root hair cell - Large surface area so that it can absorb as much water and as many mineral ions as possible from the soil., Palisade mesophyll cell - packed with lots of chloroplasts as this is where most of the photosynthesis in the leaf happens., Xylem cell - the cells die to form a hollow tube. Strengthened with lignin, Pholem cell - Sieve plates between cells allows substances to flow easily. Companion cells next to these cells provide them with what they need.,

Specialised cells

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