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22 Cards in this Set
- Front
- Back
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Three common techniques used in cytology
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light microscopy 2. Transmission electron microscopy 3. Scanning electron microscopy
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Define cystoskeleton and list functions
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proteins organized in fine filaments or slender tubes, strength and support; movement of cellular structures and materials
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List six membranous organelles
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Mitochondria 2. Nucleus3. Endoplasmic reticulum 4. Golgi apparatus 5. Lysosomes 6.Peroxisomes
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What is a plasmalemma composed of?
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phospholipids, 2. Glycolipids 3. Protein 4. Cholesterol
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What are the major functions of the plasmalemma?
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1. Physical isolation 2. Permeability 3. Sensitivity 4. Structural support
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Three passive processes regarding the permeability of the plasmalemma:
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diffusion , osmosis , facilitative diffusion
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Only one cell in the human body that has flagellum
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sperm
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What is the difference between phagocytosis and pinocytosis?
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type of material digested (phag is swallowing) (pino is drinking)
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What is the function SER
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SER stores calcisum, detoxifies, synthesizes lipids, steroids and carbohydrates
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What is the most selective that a molecule can enter the cell?
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receptor – mediated endocytosis
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The cytoskeleton consist of:
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microfilaments 2. Intermediate filaments 3. Thick filaments 4. Microtubules
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Four functions of microfilaments
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anchor cytoskeleton to intergral protiens 2. Stabilize position 3. Anchor plasmalemma to the cytoplasm 4. Produce movement of the cell
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Three functions of intermediate filaments
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1. Provide strength 2. Stabilize organelle position 3. Transport material within the cytosol
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Function of thick filaments
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found in muscle cells; involved in contraction
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Function of microtubules
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involved in the formation of centrioles, which are involved in cell reproduction
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Where would you find examples of microtubules 3
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centrioles, cilia and flagella
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The only double membrane organelle is
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mitochondria
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Which membranous organelle modifies protiens?
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golgi apparatus
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Which membranous organelle contains cellular digestive enzymes
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lysosomes
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Which membranous organelle contain catalase to break down hydrogen peroxide
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peroxisomes
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Where are cristae and what do they do?
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inner membrane of mitochondira, increase SA to increase atp
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Function of the golgi apparatus
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Synthesis and packaging of secretions 2. Packaging of enzymes (modifies protein) 3. Renewal and modification of the plasmalemma
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