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19 Cards in this Set
- Front
- Back
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Nucleus |
Contains nucleotides, ended, nucleoproteins and chromatin, surrounded by a double membrane. Control of metabolism, storage and processing of genetic information, control of protein synthesis. |
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Ribosome |
Contain RNA and proteins, fixed ribosomes are bound to rER, free ribosomes scattered in cytoplasm. Synthesise protein. |
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Golgi |
Stacks of flattened membranes (cisternae) containing chambers. Storage, alteration and packaging of secretory proteins and lysosomal enzymes. |
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Rough endoplasmic reticulum |
Network of membranous channels extending throughout cytoplasm. Has ribosomes bound to membranes. Synthesis of secretory products, intracellular storage and transport, modification and packaging of newly synthesised proteins. |
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Smooth endoplasmic reticulum |
Network of membranous channels extending throughout cytoplasm. Lacks attached ribosomes. Lipid and carbohydrate synthesis. |
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Nucleolus |
Dense region containing DNA and RNA. Site of rRNA synthesis and assembly or ribosomal subunits. |
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Vaculole |
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Pili |
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Flagellum |
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Cytoplasm |
Fluid component. Distributes materials by diffusion. |
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Cell membrane |
Lipid bilayer containing phospholipids, proteins and carbohydrates. Isolation, protection, sensitivity, support, controls entry and exit of materials. |
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Microtubules and microfilaments |
Proteins organised in fine filaments or slender tubes. Strength and support, movement of cellular structures and materials. |
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Mitochondria |
Double membrane with cristae enclosing important metabolic enzymes. Produces 95% of ATP required by cell. |
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Microvilli |
Membrane extensions creating microfilaments. Increases surface area to facilitate absorption of extracellular materials. |
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Centrosome and centrioles |
Cytoplasm containing two centrioles at right angles, each centriole is composed of 9 microtubules triplets in a 9+0 array Essential for movement of chromosomes during cell division, organisation of microtubules in cytoskeleton. |
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Cilia |
Membrane extensions containing microtubule doublets in a 9+2 array Movement of materials over cell surface. |
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Proteasomes |
Hollow cylinders of proteolytic enzymes with regulatory proteins at ends. Breakdown and recying of damaged or abnormal intracellular proteins. |
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Lysosome |
Vesicles containing digestive enzymes Intracellular removal of damaged cells and pathogens. |
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Peroxisome |
Vesicles containing degradative enzymes. Catabolism of fats and other organic compounds, neutralisation of toxic compounds generated in the process. |
