Cell Structure 0.0 / 5 ? BiologyCellular processes and structureASOCR Created by: FranCreated on: 24-10-17 14:11 Prokaryotic contains no internal membrane-bound organelles single celled organisms simple structures individual internal areas cytoplasm composed of cytosol (made of water and salts) 1 of 8 Eukaryotic contains internal membrane-bound organelles two distinct areas nucleoplasm cytoplasm - cytosol + membrane-bound organelles 2 of 8 The Nucleus contains genetic material DNA -deoxyribonucleic acid double membraned nuclear envelope - protects from damage nuclear pores - found in the nuclear envelope 3 of 8 DNA deoxyribonucleic acid associated with proteins called histones DNA + histones = chromatin chromatin coils and condenses to form chromosomes 4 of 8 Nucleolus responsible for ribosomes composed of proteins and RNA (ribose nucleic acid) RNA is used to produce ribosomal RNA 5 of 8 Mitochondria mitrochondrion (sl, pl. mitochondria) site of the final stages of cellular respiration energy is made available through the product of molecules of ATP double membrane inner membrane - highly folded (increased surface area) and forms cristae fluid interior is called matrix enzymes are fixed into cristae that controls aerobic respiration contain mitochondrial DNA can produce/reproduce their own enzymes contains some genes 6 of 8 Vesicles membranous sacs - single membrane with fluid inside store and transport molecules within cells 7 of 8 Lysosomes type of vesicles contain hydrolytic enzymes break down waste material in cells including old cells release phagocytic cells apoptosis - programmed cell death can kill its own cells if infected/ something is wrong 8 of 8
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