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3209%20sample%20MT1+answers - MCB 32 Sample Midterm...

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1 MCB 32 Sample Midterm Examination #1 Multiple Choice and Matching: one answer per question, one point each. Multiple Choice. 1. CO 2 , O 2 and NO are ____ and therefore permeate cell membranes _____. a. polar – combined with water b. nonpolar – through the lipid portion c. hydrophilic – on specialized transport proteins d. hydrophobic – by active transport 2. Bone is produced by _____ and cilia are produced by ___. 3. An effective stimulus for insulin secretion is: c. both a and b are correct. 4. Which of the following bond types is/are important for the structure and function of DNA? 5. Digestion of polysaccharides into disaccharides and monosaccharides in the intestine requires a. hydrolysis b. dehydration c. generation of CO 2 d. oxidation of water 6. Peptide bonds a. are important determinants of the double helix structure of DNA b. bind amino acids together in proteins c. bind the lipids and proteins of membranes together
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2 7. The liver stores energy in the form of _____, which is broken down into _____ and released into the blood when blood concentration of _____ increases 8. A protein that is made to be secreted out of the cell gets produced in which order? 9. Which of the following organic molecules is formed by a dehydration synthesis reaction? 10. A solution containing the strong acid 100 mM HCl (approximately the concentration in the stomach lumen) will have _____, while blood pH is approximately ______. a. pH 10 - pH 7 b. pH 3 - pH 7 c. pH 2 - pH 0 d. pH 1 – pH 7 e. pH 0 – pH 1
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