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A) endocrine signals B) paracrine signals C) autocrine signals D) neurotransmitters 2
A) a DNA binding site B) an extracellular binding site C) a transcription activating domain D) may be signaled by lipid soluble molecules 3
A) G protein linked B) enzymic receptors C) single-pass transmembrane proteins for neurotransmitters D) chemically-gated ion channels 4
A) phospholipase C B) adenylyl cyclase C) the endoplasmic reticulum D) calmodulin 5
A) gap junction B) desmosome C) hemidesmosome D) tight junction 6
A) hydrolyze proteins B) polymerize amino acids C) stimulate adenylyl cyclase D) bind cGMP E) add phosphate groups to proteins 7
A) intercellular B) intracellular C) extracellular D) ultracellular E) unicellular 8
A) integrins B) connexons C) ras proteins D) intermediate filaments E) plasmodesmata 9
A) A-kinase B) P nucleic acid C) cAMP D) nitric oxide E) G protein 10
A) Tight B) Gap C) Adherens D) Occluding E) Macular 11
A) desmosomes B) calmodulins C) synapses D) integrins E) maculae 12
A) cAMP B) cGTP C) cMHC D) cATP E) cRNA 13
A) are long-lived with widespread effects B) are short-lived, but with widespread effects due to cascades C) are long-lived, but are acting locally D) are short-lived with local effects E) such as neurotransmitters, function only intracellularly 14
A) actin filaments in the cell's cytoskeleton B) cell walls of adjacent cells in plants C) connexons of its own and adjacent cells D) extracellular matrices of adjacent cells E) intracellular integrins of most cells 15
A) progesterone B) vitamin D C) cortisol D) thyroid hormone E) all of the above 16
A) extracellular matrix B) integrins C) actin filaments D) all of the above E) none of the above 17
A) entirely internal B) seven pass C) entirely on the surface D) multipass E) single pass 18
A) GTP B) MHC C) GMP D) MCA E) ADP 19
A) A-kinase B) G protein C) phospholipase C D) inositol triphosphate E) cAMP 20
A) paracrine B) apocrine C) merocrine D) holocrine E) none of the above 21
A) adherens B) tight C) anchoring D) communicating E) lymphomas 22
A) tap protein B) gat protein C) sat protein D) ras protein E) sap protein 23
A) encircle cells of a tight junction like a belt B) connect to intermediate fibers of the cytoskeleton C) connect the cytoplasm of one plant cell to that of another D) connect actin fibers of one cell to the extracellular matrix of another E) is the name given to desmosomes of plant cells 24
A) endocrine B) paracrine C) neurotransmitter D) intracellular 25
A) becomes deactivated B) binds to the signal molecule C) becomes activated D) binds with a Ca++ E) binds with calmodulin 26
A) pass through the plasma membrane B) trigger responses from inside the cell C) bind to intracellular receptors D) activate receptors that bind to DNA E) all of the above 27
A) gap junctions B) tight junctions C) adhesions D) plasmodesmata E) all of the above 28
A) cadherin junctions B) tight junctions C) stress junctions D) anchoring junctions E) gap junctions 29
A) the fusion of plasma membranes to form a single membrane B) the insertion of protein complexes that form tunnels between cells C) protein hooks that extend into the membrane of adjacent cells D) gaps in the cell wall of plants E) none of the above 30
A) bacterial cells B) all eukaryotic cells C) plant cells D) animal cells E) the nucleus of the cell 31
A) tight junction B) plasmodesma C) chemical synapse D) gap junction E) c and d, but not a and b 32
A) True B) False 33
A) paracrine signalling B) synaptic signalling C) autocrine signalling D) endocrine signalling E) direct contact 34
A) G proteins transmit a signal from the cell surface to the interior of the cell B) all G proteins have a similar structure C) G proteins do not use second messengers but transmit the signal directly into the nucleus D) G proteins act to amplify the signal creating a cascade response in the cell E) G proteins underlie the actions of many medications 35
A) immunoglobulins B) MHC proteins C) T receptor D) B receptor E) all of the above
2002 McGraw-Hill Higher Education