BIOL1040_FinalLectorial_QuswithAnswers_Sem2_2010

BIOL1040_FinalLectorial_QuswithAnswers_Sem2_2010 -...

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© A/Prof Lesley Lluka IOL1040 e last lectorial BIOL1040 – the last lectorial ANSWERS TO QUESTIONS
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© A/Prof Lesley Lluka Which of the following factors would nd to increase membrane fluidity? tend to increase membrane fluidity? A. a greater proportion of unsaturated phospholipids B. a greater proportion of saturated phospholipids . lower temperature C. a lower temperature D. a relatively high protein content the membrane in the membrane E. a greater proportion of relatively 0% 0% 0% 0% 0% large glycolipids compared to lipids having smaller molecular A. B. C. D. E. masses 10 0 of 400
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© A/Prof Lesley Lluka Which of the following is NOT a characteristic f G ti ld t? Th of G protein coupled receptors? They A. bind and activate heterotrimeric G proteins B. are the most abundant type of receptor in our genome . re membrane proteins that are C. are membrane proteins that are found only in the periphery re major targets for the actions D. are major targets for the actions of clinically used drugs 0% 0% 0% 0% 0% E. generate amplified intracelluar signals (e.g. cAMP and Ca 2+ ) A. B. C. D. E. 10 0 of 400
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© A/Prof Lesley Lluka assive diffusion Passive diffusion A. allows rapid passage of nutrients such as glucose across distances of centimetres B. avoids the necessity to have a circulatory system C. requires energy generated from TP ATP D. mediates direct transfer of gases cross epithelial cell membranes 0% 0% 0% 0% 0% across epithelial cell membranes E. is not an important mechanism A. B. C. D. E. 10 0 of 400 in cells of mammalian systems
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© A/Prof Lesley Lluka Blood pressure in capillary beds is osest to closest to A. 120/80 mmHg / g B. 100/30 mmHg 00 mmHg C. 100 mmHg D. 0 mmHg E. 30 mmHg 0% 0% 0% 0% 0% A. B. C. D. E. 10 0 of 400
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© A/Prof Lesley Lluka Which of the following is NOT a common ature of all respiratory systems? feature of all respiratory systems? A. linked with a circulatory system y y for gas transport rge surface area for gas B. large surface area for gas exchange oist surface at which gas C. moist surface at which gas exchange occurs D. specialized cell types for gas transfer 0% 0% 0% 0% 0% E. thin epithelial surfaces for gas exchange A. B. C. D. E.
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BIOL1040_FinalLectorial_QuswithAnswers_Sem2_2010 -...

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