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Koofer (1) - it'S ty of North Texas De pt of 8,o,cg.ca...

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., .... " .it 'S ty of North Texas Dept. of 8,o,cg.ca Sce"ces An i mal 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 postsynap ti c potential lasts longer than the postsynaptic current .. .. .... .. .. ............... ..... ........... ..... ........... . ........... ........ .. .......... ............. ... .; = 2. Diffusion transport requires heat (mole cu lar mo tion) 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 ce ntral nervous system ..... ............... .. ....... - = 5. The bond strength between carbon ato ms 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 ep ithe li um must be symmetric for all functions ..... .. . - = 9. Sucrose and glucose in water form an electrolyte .................................... .. ........... .. ........... - = 10. The intermediate filaments in ce ll s are composed of phospholipids ........... .. .......... .. ...... .. .. T = 1'1. Aleons of motor neurons are very specific: th ey fo rm onty one (large) synapse with one musde fiber (or musde ce ll ) .. .......... .. ......... .. .. .. ................. .. ............... .. .. .............. - F 12. The water molecule is a neutral bu t polarized molecule .. .................... .. ............................ - F 13. The smooth endoplasmic reliculum in the axon participates in Ca++ regulation .. .. . 0 = 14. Tetrodotoxin causes an immediate (le ss than 10 sec) loss of membrane po tential in all nerve cells .............. .. .......................... ... .................................................. .. ........... . F 15. The rising phase of the action pote nti al is generated primarily by the influx of potassium ions. .. .. ....... ... .... .. .. ........ ..... ........ .... ............................ ...... ... .. .. .. ........... .. ... - F 16 . The falling phase of the action poten ti al 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 set f-propagating and travel long distances without decrement. ................. .. ............................................ .. ................... .. ................. ... .. ... .. . F 18. Without the sodium pump, individual ac ti on potentials cou ld not retum to the rest in g potential level. ........... .......... ........... .. ........................... .. .. ..................... ........ .. . T F 19. The vestibular apparatus consists of the semicircular canals, utriculus, and saccu lu s ..... i F 20 . If a depola ri zation 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 myelinati on ............................................... ... .. ........................ ... T f 22. Microtubules have a diameter of approximately 250 Angtroms .. ......... .. ....................... .. .. .. cr> F 23. The process of synthesizing messenger RNA from DNA is ca l led "Translation· ... .. ............ T 24. The 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 If to interact with wa ter . ... .. ........................ ... .................................... .. ............................... . 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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