Chapter2 Molecular Interactions

Chapter2 Molecular Interactions - Exam Name_ MULTIPLE...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following is a common feature of soluble proteins? A) structural support B) receptor binding C) noncovalent interaction D) chemical modulation E) all of the above 1) 2) The atomic number of an element is equivalent to A) the number of protons in the nucleus. B) the electrical charge of an atom. C) the number of protons plus neutrons in the nucleus. D) the number of electrons in the outer shell. E) the number of neutrons in the nucleus. 2) 3) A 5 M solution of 100 mL of glucose contains how many grams of glucose, m.w. 180 daltons? A) 360 B) 90 C) 6.02 × 10 23 D) 180 E) 1.0 3) 4) The weak interactions between atoms that keep atoms near each other but don’t tightly bind them together are called A) van der Waals forces. B) hydrogen bonds. C) ionic bonds. D) A and B E) B and C 4) 5) If a substance has a pH that is less than 7, it is considered A) acidic. B) neutral. C) alkaline. D) a salt. E) a buffer. 5) 6) The fuel molecule all cells in the body can use is A) protein. B) glucose. C) starch. D) sucrose. E) vitamins. 6) 1
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7) The alpha - helix and pleated sheet are examples of the __________ structure of a protein. A) quaternary B) pentanary C) primary D) tertiary E) secondary 7) 8) Which group of elements makes up more than 90% of the body's mass? A) O, Ca, H B) Ca, C, O C) O, C, H D) C, Na, K E) O, H, Na 8) 9) A double covalent bond is formed when atoms A) share one pair of electrons (a total of two). B) transfer two pairs of electrons from one atom to the other. C) transfer a pair of electrons from one atom to the other. D) share two pairs of electrons (a total of four). E) swap two pairs of electrons. 9) 10) If 100 mL of water contains 5 grams of NaCl, m.w. 58.5 daltons, what is the molarity of the solution in moles/L? A) 0.05 B) 0.85 C) 0.085 D) 0.25 E) 2.92 10) 11) According to the rules of complementary base pairing, a nucleotide containing the base cytosine would only pair with a nucleotide containing the base A) adenine. B) uracil. C) cytosine. D) guanine. E) thymine. 11)
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This note was uploaded on 01/03/2012 for the course BIO 308 taught by Professor Acbrown during the Spring '10 term at Portland.

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Chapter2 Molecular Interactions - Exam Name_ MULTIPLE...

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