B1 - Cells and Organisation 0.0 / 5 ? BiologyCellsGCSEAQA Created by: JeremyLinCreated on: 20-01-20 11:41 How do you calculate magnification? Objective Lens x Eyepiece Lens 1 of 15 How do you calculate the size of an object Image size = Magnification x Size of Real Object 2 of 15 What is a nucleus? Controls all the activities in the cell and is surrounded by nuclear membrane 3 of 15 What is a cytoplasm? A liquid gel where most chemical reactions occur 4 of 15 What is a cell membrane? Controls the passing of substances such as glucose and water 5 of 15 What is mitochondria? Structures in the cytoplasm where aerobic respiration occurs 6 of 15 What are ribosomes? Where protein synthesis takes place 7 of 15 What is the cell wall? Made of cellulose and strengthens and supports the cell structure 8 of 15 What are chloroplasts? Contain green pigments called chlorophyll that absorb light so the plant can make food and go through photosynthesis 9 of 15 What is the difference between a prokaryotic and eukaryotic cell? A eukaryotic cell has a nucleus but prokaryotic does not 10 of 15 What is a specialised cell? A cell that differentiates to form different types of cell that carry a specific function 11 of 15 3 examples of specialised cells: Muscle cell, Nerve cell, Sperm cell 12 of 15 What is diffusion? The spreading out of particles of any substance in a solution 13 of 15 What is osmosis? The passing of water through a semi permeable membrane 14 of 15 What is active transport? When substances go against the gradient (opposite of diffusion) 15 of 15
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