cell membrane structures quiz

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# each of the following statements concerning the plasmalemma is true, except: + is not an obligatory cell component - includes elementary cell membrane - its supermembranous layer consists of glycolipids and glycoproteins - its submembranous layer contains filaments and microtubules - is a semipermeable cell boundary # the plasma membrane functions are as follows, except: + is the primary protein synthesis site - is a selectively permeable barrier - is the site for hormone receptors - provides celltocell interaction - takes part in the active and passive transport # each of the following statements concerning the microvilli is true, except: + contain microtubules - are plasmalemma projections - amplify cell surface area - form the brush border of intestinal epithelium - contain microfilaments # each of the following statements concerning the cilia is true, except: + are not visible in light microscope - are plasmalemma projections - contain nine …

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ls that: + actively synthesize proteins - have cilia - accumulate lipids - accumulate glycogen - synthesize mucus # the microfilaments are composed of the following proteins: + actin - desmin - keratin - vimentin - integrin # these filaments belong to the population of intermediate filaments, except: + actin filaments - tonofilaments - neurofilaments - glial filaments - desmin filaments # each of the following statements concerning the nuclear envelope structure is true, except: + its outer membrane is continuous with golgi apparatus - consists of two membranes separated by the perinuclear space - contains nuclear pores providing communication between the nucleus and cytoplasm - its outer membrane is studded with ribosomes - its inner membrane has a fibrous lamina anchoring chromatin # each of the following statements concerning chromatin is true, except: + heterochromatin takes part in transcription - euchromatin is a lightly stained and dispersed - heterochromatin …

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ules - its components are attached to a chromosome at the kinetochore - is responsible for chromosome movement in the anaphase - centrioles take part in its formation # the following cytoplasmic components are inclusions, except: + lysosomes - lipid droplets - glycogen clumps - mucous granules - protein, granules # each of the following statements concerning the mesothelium is true, except: + not each of its cells reaches the lumen - is derived from mesoderm - is simple - its cells are squamous - lines the peritoneal cavity # each of the following statements concerning the pseudostratified epithelium is true, except: + all its cells reach the apical surface - all its cells rest on the basement membrane - contains goblet cells - is ciliated - contains short (basal) cells # each of the following statements concerning the basement membrane is true, except: + is absent in some epithelia …

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ontinuously sloughed - lines the oral cavity, the esophagus, the rectum, and the vagina # each of the following statements concerning the stratified transitional epithelium is true, except: + is capable of keratinization - consists of the basal, intermediate, and superficial layers - changes the number of its layers, depending on the degree of stretching - its superficial cells are domeshaped - lines the urinary system organs # the criteria of the exocrine gland classification are as follows, except: + contact of cells with the basement membrane - branching of the duct - the number of secretory portions - the shape of secretory portions - the mode of secretion # each of the following statements concerning a compound branched tubuloalveolar gland is true, except: + it has one secretory portion - its duct branches - its secretory portions are numerous - its secretory portions may be flasklike - its secretory …

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bactericidal substances - thromboplastin # each of the following statements concerning the band neutrophils is true, except: + are mature neutrophils - have horseshoeshaped nuclei - comprise about 5% of all neutrophils - their increase in number is called “a shift of the leukocytic formula to left” - they increase in number in inflammatory conditions # each of the following statements concerning the basophils is true, except: + they are macrophage precursors - comprise 0 51% of all leukocytes - their nuclei are masked by granules - their specific granules stain metachromatically - their granules contain heparin and histamine # each of the following statements concerning the monocytes is true, except: + contain specific granules - are the largest circulating blood cells - have kidneyshaped nuclei - contain azurophilic granules - comprise 68% of all leukocytes # the following blood cells are direct macrophage precursors: + monocytes - lymphocytes - …

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# each of the following statements concerning the plasmalemma is true, except: + is not an obligatory cell component - includes elementary cell membrane - its supermembranous layer consists of glycolipids and glycoproteins - its submembranous layer contains filaments and microtubules - is a semipermeable cell boundary # the plasma membrane functions are as follows, except: + is the primary protein synthesis site - is a selectively permeable barrier - is the site for hormone receptors - provides celltocell interaction - takes part in the active and passive transport # each of the following statements concerning the microvilli is true, except: + contain microtubules - are plasmalemma projections - amplify cell surface area - form the brush border of intestinal …

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