Exam1 416K-Fall 06 - Name _ Bio416K Physiology and...

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Name _____________________________ Bio416K Physiology and Functional Anatomy Lecture Exam 1 Fall ‘06 1. Compared to normal body fluids, an intravenous (IV) solution of 5% glucose in 0.9% NaCl (normal saline) is: a. Isosmotic and hypotonic b. Hyperosmotic and hypertonic c. Isosmotic and hypertonic. d. Hyperosmotic and hypotonic. e. Hyperosmotic and isotonic. 2. Which property of diffusion best explains the necessity of the circulatory system in multicellular organisms? a. Molecules move from an area of higher concentration to an area of lower concentration b. Diffusion can take place in an open system or across a partition that separates two systems c. Diffusion is rapid over a short distance but much slower over long distances d. Diffusion rate is inversely related to molecular size. e. Molecules move from and area of lower concentration to an area of higher concentration 3. Facilitated diffusion and active transport differ in that ______________________. a. Facilitated diffusion uses cell membrane proteins to move substances whereas active transport does not b. Facilitated diffusion uses a substrate to bind to a protein carrier, whereas active transport does not c. Net facilitated diffusion stops when concentrations of transported substance are equal inside the cell and out, whereas active transport does not d. Active transport demonstrates properties of specificity, competition and saturation, whereas facilitated transport does not e. Facilitated diffusion moves water across the cell membrane, whereas active transport does not 4. Which body compartment contains high levels of Na + , low levels of K + , and almost no large anions and proteins? a. Plasma b. Interstitial fluid c. Intracellular fluid d. A and B are correct e. A and C are correct 5. The concentration of calcium inside the cell is 0.3 mM. The concentration of calcium outside the cell is 0.1 mM. How could the cell transport even more calcium to the inside? a. Passive transport b. Active transport c. Osmosis d. Exocytosis e. All of the above 1
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6. Saturation occurs when _____________________. a. Molecules are moved by the use of vesicles b. The energy required to move molecules is derived from a high energy bond c. A group of carrier proteins is operating at a maximum rate d. A preference of a carrier protein for a substrate is demonstrated based on the differing affinities of the carrier for the substrates e. A carrier protein has the ability to transport only one molecule or a group of closely related molecules 7. The cell membrane consists of a phospholipid bilayer ______________________. a.
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This test prep was uploaded on 03/19/2008 for the course BIO 416K taught by Professor Findell during the Fall '08 term at University of Texas at Austin.

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Exam1 416K-Fall 06 - Name _ Bio416K Physiology and...

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