Koofer (1) - ., . " . it 'S ty of North Texas De pt....

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., .... " .it'S ty of North Texas Dept. of 8,o,cg.ca Sce"ces Animal PhysIoIoO Fall 2003 Name: __________ ~ J __________ _ BIOLOGY 3800 ANIMAL PHYSIOLOGY - Fall 2003, Exam 1 Section 1: True /False 1 point each 1. During synaptic activity, the postsynaptic potential lasts longer than the postsynaptic current . . .. .. .. .. ................................. ................................................................ .; = 2. Diffusion transport requires heat (molecular motion) as the direct source of energy . ......... r = 3. Diffusion of molecules is not defined unless a membrane is present. .......... .............. ........ - r 4. Microglia are resident macrophages in the central nervous system. .... . .............. ......... - = 5. The bond strength between carbon atoms in a sugar molecule at room temperature is between than 10 and 16 kcal/moL .... ............. ................................................................. ..... - . 6. Gap junctions are epefled by calcium ions . ...... ! . . ... .................................................. .......... - = 7. Cells-swell and may even lyse in a 0.9 osmolar solution . .... :;. . ~ .... ':<: . ... ...................... ........... - = 8. The serosal and mucosal sides of an epithelium must be symmetric for all functions . ....... - = 9. Sucrose and glucose in water form an electrolyte . ............................................................. - = 10. The intermediate filaments in cells are composed of phospholipids . .................................. T = 1'1. Aleons of motor neurons are very specific: they form onty one (large) synapse with one musde fiber (or musde cell) . .............................................................. .................. - F 12. The water molecule is a neutral but polarized molecule . ................................................... - F 13. The smooth endoplasmic reliculum in the axon participates in Ca++ regulation . . ... 0 = 14. Tetrodotoxin causes an immediate (less than 10 sec) loss of membrane potential in all nerve cells . ........................................................................................................... . F 15. The rising phase of the action potential is generated primarily by the influx of potassium ions. . . ............ .... . ........... ..... ........ ........................... ...... ......................... - F 16. The falling phase of the action potential is generated by the influx of negative chloride ions which retum the potential to a negative value inside neurons. . ...... ................. T F 17. Graded potentials are generalty setf-propagating and travel long distances without decrement. . ..................................................................................... ........................... . F 18. Without the sodium pump, individual action potentials could not retum to the resting potential level. . ............................... ............................. .. ....................... ........... T F 19. The vestibular apparatus consists of the semicircular canals, utriculus, and sacculus . .... i F 20. If a depolarization at the axon hillock reaches threshold, an action potential must follow . ............................................................................................................................ T F 21. The conduction velocity of an action potential along an axon depends primarily on the axon length and on myelination . ................................................. ................... ....... ... T f 22. Microtubules have a diameter of approximately 250 Angtroms . ......................................... cr> F 23. The process of synthesizing messenger RNA from DNA is called "Translation· . ................ T 24. primary structure of a protein deals with the grouping and binding of large protein subunits . .. ................... ...................................................................... ..................... T ._ 25. Because of their hydrophobic structure, none of the different dasses of lipids are able If to interact with water . ..................................................................................................... . T F
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University of North Texas Dept. of BiOlogical Sciences, Animal Physiolog Fall 2003 Section 2: Identity or Match 1 pt each use the following for questions 26-32; use (0) if no match is possible (1) tight junction; (2) desmosome; (3) zonula adherens; (4) paracellular; (5) transcellular; (6) synaptic junction; (7) serosal; (8) mucosal; (9) gap junction; (10) microvilli; (11) endocytosis: (12) exocytosis.
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This note was uploaded on 04/12/2011 for the course BIOL 3800 taught by Professor Gross during the Spring '03 term at North Texas.

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Koofer (1) - ., . &quot; . it 'S ty of North Texas De pt....

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