Resumo_Biologia_15

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Cell Biology and Organisation 2.1 Cell and and Function cells are basic units or all living things. cell components can be seen using light microscopes and election Light microscopes use lenses to refract light to produce a final magnified Election microscopes use magnetic fields to focus a beam of elections in order produce a final highly magnified image. Structures and components Of animal cells and plant cell cell wall Lysosome golgi cell membrane appra. Nucleus membrane nucleous chromatin nucleolus chloroplast nucleolus nuclear pore roughER enooplasmic reticulum golgi apparalus centriole cell component functions plasma all the content a cell are separates the contents of a membrane contained within a plasma cell from its external membrane environment the plasma membrane consist of the movement of phospolipid bllayer substances between the cell with embedded molecules and its external environment is semi- permeable through active and passive transport. Forms an layer surrounds H prevents the cell from wall cell membrane bursting should excess water consist of strong and rigid enter the cell through osmosis cellulose which is permeable 10 It supports and protect cell small molecules. Cytoplasm consist lik fluid within supplies organelle withall which all the cell organelle, required substances that are dissolved nutrient, brough in from outside cell enzymes and other molecules are gives shape to the cell. suspended. Nucleus a relatively large compact It controls cell and spherical organelle all cellular activities consist a nuclear envelope callies genetic information that separates the contents the nucleus from the with the and nucleoplasm.