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63 Cards in this Set
- Front
- Back
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plasma membrane
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has Na+ and K+ ATPase
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plasma membrane
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intercellular adhesion, intercellular communication
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plasma membrane
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transport of molecules and ions in and out of cells
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nucleus
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site of chromatin
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nucleus
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site of DNA directed mRNA synthesis (transcription)
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nucleus
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site of DNA replication
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nuclear envelope
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separates chromatin from cytoplasm
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nuclear envelope
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separates chromatin from cytoplasm
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nuclear envelope
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have complex pores that permit passage of proteins, ribosomal particles, mRNA, ions, etc
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nuclear envelope
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double membrane, outer membrane is contiguous with rough ER
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nucleoplasm
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everything enclosed by nuclear envelope
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chromatin
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comprised of unraveled DNA molecules and various nuclear proteins
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chromatin
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present during interphase (between cell division)
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chromosome
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highly condensed DNA molecules and nuclear envelope
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chromosome
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23 pairs in human body cells
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chromosome
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visible only shortly before and during cell division
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nucleolus
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region of nucleoplasm
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nucleolus
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has nucleolar organizer
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nucleolus
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site of ribosomal RNA synthesis; site of packaging of rRNA into ribonucleoprotein complexes that become ribosomoal subunits
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nucleolus
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synthesis of ribosomal subunits
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nucleolus
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is larger in cells that synthesize proteins at a high rate
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cytosol
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enzymes of glycolysis
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cytosol
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fatty acid synthesis
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cytosol
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cytoplasm minus organelles and nonsoluble structures
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cytosol
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cellular inclusions (glycogen granules, lipid droplets)
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cytoplasm
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everything between nuclear envelope and plasma membrane
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ribosomes
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comprised of one small particle subunit and one larger particle unit
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ribosomes
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comprised of three molecules of rRNA and many proteins
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ribosomes
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site of protein synthesis (translation of mRNA into protein)
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ribosomes
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attached to mRNA to form polysomes
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ribosomes
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found free in cytosol or on surface of rough ER
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rough endoplasmic reticulum (RER)
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labyrinthine structure comprised of branching tubules and flattened sacs with ribosomes on surface
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rough ER
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translation/synthesis of proteins for membranes and for secretion
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rough ER
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signal peptide proteolysis
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rough ER
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protein segregation
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rough ER
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protein segregation
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rough ER
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initial glycosylation of proteins
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rough ER
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prominent feature of cells that synthesize proteins to be secreted
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rough ER
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synthesis of most membrane lipids
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smooth ER
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labyrinthine membrane structure comprised of branching tubules and flattened sacs with no ribosomes on outer surface
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smooth ER
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contains enzymes for detoxification
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smooth ER
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synthesis of steroids and other nonmembrane lipids
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smooth ER
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stores calcium ions
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Golgi complex
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comprised of stack of flattened membranous sacs (cisternae) with small tubules and vesicles pinching off or fusing with cisternae
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Golgi complex
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terminal glycosylation of proteins and other post translational changes of proteins
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Golgi complex
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phosphorylation and sulfation reactions
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Golgi complex
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concentration and sorting of materials for transport to other organelles or for secretion
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Golgi complex
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glycosylation of lipids
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Golgi complex
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initial proteolysis
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Golgi complex
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synthesis of some membrane lipids (sphingolipids)
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lysosome
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intracellular digestion
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lysosome
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contains many hydrolases
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lysosome
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lumen has acid pH
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lysosome
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fuses with phagosome to form phagolysosome
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peroxisome
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degradation of certain fatty acids and amino acids
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peroxisome
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production and degradation of hydrogen peroxide
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peroxisome
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detoxification in liver and kidne
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mitochondria
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powerhouse of cell; responsible for reactions of cellular respiration (except glycolysis) i.e. citric acid cycle, electron transport, oxidative phosphorylation, ATP synthesis
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mitochondria
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steroid synthesis
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mitochondria
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derived from prokaryotic cell that is symbiotic in euokaryotic cell
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mitochondria
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have circular DNA molecule and bacteria-like ribosomes
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mitochondria
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multiply by division; inherited from mother only
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cytoskeleton
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microfilaments; microtubules; intermediate filaments
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