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16 Cards in this Set
- Front
- Back
Plasmalemma
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lipid bilayer, contains phospholipids, proteins, steroids, and carbs. Isolates cell, protection, sensitivity; support of entrance/exit to cell
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cytosol
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fluid component of cytoplasm. Distributes materials by diffusion; stores glycogen, pigments, an other materials
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cytoskeleton
microtubule & microfilament |
proteins organized in fine filaments or slender tubes. Strength and support; movement of cellular structures and materials
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microvilli
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membrane extensions containing microfilaments. Increase surface area to facilitate absorbtion of extracellular materials
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centrosome
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cytoplasm containing 2 centrioles, at right angles, each complsed of nine microtubule triplets. Essential for movement of chromosomesduring cell division; organization of microtubules in cytoskeleton
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cilia
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membrane extension containing micrtubule doublets in a 9 + 2 array. Movement of materials over cell surface
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ribosomes
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RNA + proteins, fixed are bound to rough endoplasmic reticulum, free are scattered i cytoplasm. Protein synthess
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mitochondria
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double membrane, with inner membrane containing metabolic enzymes. Produce 95% of ATP used by the cell
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nucleus
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nuclear envelope, nucleolus, and nuclear pore. Contains nucleotides, enzymes, nucleoproteins, and chromatin; surrounded by double membrane containing nuclear pores. Control of metabolism, stores and processes genetic info, control of protein synthesis
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nucleolus
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dense reigon in the nucleoplasm containing DNA and RNA. Site of rRNA and assembly of ribosomal subunits
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endoplasmic reticulum (ER)
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network of membranous channels extending through the cytoplasm. Synthesis of secretory products; intracellular storage and transport
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Rough ER
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Has ribosomes bound to membranes. Modification and packaging of newly synthesized proteins
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Smooth ER
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Lacks attached ribosomes. Lipid, steroid, and carb synthesis; calcium ion storage
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golgi apparatus
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stacks of flattened membranes containing chambers. Storage, alteration, and packaging of secretory products and lysosomal enzymes
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Lysosome
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vessicles containing dygestive enzymes. Intracellular removal of damaged organelles or pathogens
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peroxisome
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vessicles containing degradative enzymes. catabolism of fats and other compounds; neutralization of toxic compounds generated in the process
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