bio test 1

bio test 1 - Print name Bio151C Exam 1 version A Honesty...

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Print name ______________________________ Bio151C, Exam 1, version A Honesty pledge: I pledge that I have neither given nor received, nor will I give or receive, aid on this examination. If you agree with the Honesty Pledge, you must sign the Scantron on the line that says Class . Instructions: Use only a #2 pencil for all responses on the Scantron answer sheet Put your 5-digit PIN# in ID number on the front and back of the Scantron. Fill in bubbles. Enter your name (First_Last) and fill in bubbles. Enter the Exam version (A, B, C, or D) in the Test Form section and fill in the bubbles. All answers must be entered on your Scantron answer sheet. Make sure your responses are entered in the numbered row that corresponds to the exam question number. Check numbers frequently. Failure to follow all instructions properly will result in a delay of processing your exam. 50 MULTIPLE CHOICE QUESTIONS : Enter the letter of the best response on the Scantron sheet. 1) The four most common elements in living organisms are A) C, H, O, Fe. B) C, H, O, Na. C) C, H, O, N. D) C, N, O, Na. E) Fe, N, O, Ca. 2) A(n) __________ forms when two atoms share electrons. A) ion B) element C) covalent bond D) ionic bond E) hydrogen bond 3) The hydrogen atoms of a water molecule are bonded to the oxygen atom by __________ bonds, whereas neighboring water molecules are held together by __________ bonds. A) hydrogen . . . ionic B) hydrogen . . . polar covalent C) polar covalent . . . hydrogen D) ionic . . . covalent E) polar covalent . . . ionic 4) How many covalent bonds can carbon form? A) 1 B) 2 C) 3 D) 4 E) 5 5) A bond between a carbon atom and a hydrogen atom is typically a(n) __________ bond, which explains why hydrocarbons are _______. A) polar covalent…hydrophobic B) ionic…hydrophobic C) nonpolar covalent…hydrophobic D) hydrogen… hydrophilic E) polar covalent…hydrophilic 6) The pH of a solution is around 1. It would be characterized as A) basic B) ionic C) acidic D) neutral E) physiological 7) The results of dehydration synthesis can be reversed by A) condensation. B) hydrolysis. C) polymerization. D) the addition of an amino group. E) the addition of a phosphate group. 8) Which list below consists of only polymers? A) sugars, amino acids, nucleic acids, B) proteins, nucleic acids, amino acids C) proteins, nucleic acids, polysaccharides D) proteins, nucleotides, sugars E) polysaccharides, amino acids, nucleic acids 9) A molecule with the formula C 55 H 110 O 55 is probably a(n) A) oil. B) steroid. C) wax. D) protein. E) polysaccharide. 10) Sucrose is formed A) from two glucose molecules. Page 1 of 6
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B) from two monosaccharides by dehydration synthesis. C) when ionic bonds link two monosaccharides.
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bio test 1 - Print name Bio151C Exam 1 version A Honesty...

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