(Chapter 1) Cell Structure 0.0 / 5 ? BiologyCells, tissues and organsGCSEAQA Created by: 14randalloliCreated on: 14-12-17 18:31 Structure of a Eukaryotic Cell 1 of 8 Structure of a Prokaryotic Cell 2 of 8 Cell Specialisation- Sperm Cell Ejaculated during male ****** Swim through female reproductive system Have a tail Have lots of mitochondria to respire Nucleus is stored in the head and contains male DNA 3 of 8 Cell Specialisation- Nerve Cell Controls and coordinates all activitie Two main parts: Central Nervous System Peripheral Nerve System Longest cells in human body Have extensions called axons coated in a myellin sheath Have branches called dendrites Have smaller extensions to fell neighbouring cells 4 of 8 Cell Specialisation- Muscle Cell All muscles in our body contract and relax Three types: Smooth (lines vessels and eyes, contracts automatically) Cardiac (walls of heart, contracts automatically) Skeletal (found attached to bones, concious movement) Lots of mitochondria as muscular connection requires lots of energy 5 of 8 Cell Specialisation- Root Hair Cell Have small extensions in plants the poke out of the soil Lots of plants have very long roots that look like a spider's web The long cells increase surface area allowing more water and minerals to be absorbed Plants would die without root hair cells 6 of 8 Cell Specialisation- Xylem Cell Forms long tubes running along the roots and stem of a plant Carry water and dissolved minerals throughout the plant Walls are reinforced with lignin which is waterproof Made from dead cells Carry water to green parts of a plant for photosynthesis 7 of 8 Cell Specialisation- Phloem Cell Carries glucose made in photsynthesis in a process called translocatio Sugar is immediately used for respiration Alive They have specialised walls 8 of 8
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