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ORGANELLES (:check: GOLGI APPARATUS (:<3: Discharged by exocytosis, …
ORGANELLES
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MICROVILLI
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Increase surface area
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GOLGI APPARATUS
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Discharged by exocytosis
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Forms new membrane components
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Forms secretory vesicles
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Packages lysosomes
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RIBOSOMES
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Are composed of a large and a small ribosomal subunit
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Contain ribosomal RNA (rRNA)
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Are responsible for manufacturing proteins
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Can be free or fixed ribosomes
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LYSOSOMES AND PEROXISOMES
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Lysosomes are
• Filled with digestive enzymes
• Responsible for autolysis of injured cells
:<3: Peroxisomes
• Carry enzymes that neutralize toxins
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ENDOPLASMIC RETICULUM
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Forms cisternae
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Rough ER (RER) contains ribosomes
( Forms transport vesicles )
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Intracellular membranes involved in synthesis, storage, transportation and detoxification
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Smooth ER (SER)
( Involved in lipid synthesis )
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MEMBRANE FLOW
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Continuous movement and recycling of membranes
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CYTOSKELETON
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Examples
: Microfilaments
• Intermediate filaments
• Microtubules
• Thick filaments
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Provides strength and flexibility
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CENTRIOLES
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Organize the cytoskeleton
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Cytoplasm surrounding the centrioles is the centrosome
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Direct the movement of chromosomes during cell division
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CILIA
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Is anchored by a basal body
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Beats rhythmically to move fluids across cell surface
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PROTEASOMES
:<3:
Remove and break down damaged or abnormal proteins
:<3:
Require targeted proteins to be tagged with ubiquitin
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MITOCHONDRIA
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Matrix = fluid contents of mitochondria
:<3:
Cristae = folds in inner membrane
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Responsible for ATP production through aerobic respiration