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Unformatted text preview: NS3410 – Spring 2010 Quiz 2 - 2/10 /10 EMAIL:______________________NAME:_____________________ Circle the correct answer or fill in the blank with the appropriate term. 1. If someone is retaining excessive amounts of fluid (edematous); infusing what kind of solution may help eliminate water from the body? Hypotonic Isotonic Hypertonic 2. Which of the following tissues or cells would likely contain the least amount of aquaporins? Kidney / renal tissue Red blood cell Adipose tissue Gastrointestinal tract 3. Which type of transport or transporter moves a substance against the concentration gradient? Aquaporins Osmosis Carrier- mediated diffusion Active transport 4. Cystic fibrosis is a genetic disorder that impacts the CFTR transporter. Which subunits of this protein are phosphorylated? N ucleotide binding domain Regulatory domain Transmembrane domain Ion channel 5. Membrane potentials are generated by _______________. (circle all that apply) Pinocytosis Na + / Cl - ATPase Potassium leakage channels Na + / K + ATPase 6. Passive transport is associated with all but which of the following? Aquaporins Filtration Exocytosis Facilitated diffusion 7. Order the following steps from 1 (first step) to 5 (last step) to detail how iron is i nternalized into a cell via receptor mediated endocytosis. (0.2 pts each) 2_____Clathrin is released from the endosome 4_____Iron is released from the TfR-transferrin complex 3_____The endosome is acidified 1_____ Diferric-transferrin binds to transferrin receptor 5_____DMT1 moves iron across the endosome 8. The ____apical ___ side of an epithelial cell is most likely to contain cilia and the ___basal ___ side is proximal to the underlying connective tissue? 9. Epithelial tissue is always avascular and anuclear. TRUE / FALSE (circle correct answer) 10. Which cells serve as scavengers in the body and phagocytize foreign substances? Macrophages Mast cells Erythrocytes Fibroblasts ...
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- Spring '08