Exam_1_12_1_key-1 - EXAM 1 Clearly write the one best...

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EXAM 1 Clearly write the one best answer that completes the sentence or answers the question (2 points per question). 1) Which molecules are generally hydrophobic? 1) A) polar molecules and hydrocarbons B) ions and hydrocarbons C) nonpolar molecules and ions D) polar molecules and ions E) none of the above 2) Which of the following is a nonpolar molecule? 2) A) H2O B) NH3 C) CH4 D) C2H6 E) C and D 3) During the clinical trial of a drug to treat procrastination, the subjects were divided into two groups – the first group was given the drug procrastin and the second group was not given any drug. The group treated with procrastin, stopped procrastinating and got high grades in their exams while the second group got average grades. The first group is called the ____________ and the second group is called the _____ group. A) control, experimental 3) B) experimental, control C) emergent, feedback D) feedback, emergent E) experimental, experimental 4) Fatty acid tails in phospholipids and triacylglycerols interact with each other by A) disulfide bridges 4) B) van der Waals interactions C) hydrogen bonds D) covalent bonds E) all of the above 5) Which is not involved in, or not relevant to, hydrogen bonding? 5) A) attraction of electrons by one atom more than another B) partial electrical charges C) attraction between unlike partial charges D) loss of electrons E) polar molecules 1
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6) Cranberry-apple juice has a hydroxide ion concentration [OH-] of 10-11M. The juice has a 6) A) pH 10 B) pH 4 C) pH 3 D) pH 7 E) none of the above 7) Sucrose is a disaccharide made of: 7) A) Glucose B) Fructose C) Galactose D) A and B E) A, B and C 8) What is the molecule illustrated below? 8) A) an unsaturated fatty acid B) a polyunsaturated triacylglyceride C) a steroid similar to cholesterol D) a saturated fatty acid E) a trans polyunsaturated triacylglyceride 9) What is the structure shown below? 9) A) cellulose B) testosterone C) cholesterol D) myoglobin E) phospholipid WE ARE GIVING POINTS FOR THIS QUESTION IF YOU HAVE MARKED ANY OF THE ABOVE OPTIONS 10) Which of the following is TRUE of both starch and cellulose? 10) A) Humans can digest both starch and cellulose 2
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B) They are both polymers of glucose in α (1, 4) linkages. C) They are both used for energy storage in humans
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This note was uploaded on 09/01/2009 for the course BIO 311C taught by Professor Satasivian during the Fall '08 term at University of Texas at Austin.

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Exam_1_12_1_key-1 - EXAM 1 Clearly write the one best...

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