BIO1408-Lecture_Exam1-Ch1-3_Fall2011

BIO1408-Lecture_Exam1-Ch1-3_Fall2011 - Biology 1408 -...

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Biology 1408 - Lecture Exam 1 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Each question is worth 1 point. 1) What name is given to substances that resist changes in pH? 1) A) salts B) buffers C) bases D) sugars E) acids 2) The DNA of a eukaryotic cell is found within the ______. 2) A) nucleus B) ecosystem C) insulin D) archaea E) prokaryotic cell 3) Testosterone and estradiol, the male and female sex hormones, are 3) A) carbohydrates. B) proteins. C) phospholipids. D) nucleic acids. E) steroids. 4) Which of the following are isomers? 4) A) glucose and sucrose B) glucose and fructose C) sucrose and glucose D) sucrose and lactose E) lactose and maltose 5) A hypothesis is a(n) ______. 5) A) guess B) tentative explanation C) fact D) theory E) observation 6) What is the chemical mechanism by which cells make polymers from monomers? 6) A) hydrolysis B) dehydration reactions C) the formation of disulfide bridges between monomers D) ionic bonding of monomers E) phosphodiester linkages 7) In a scientific experiment, the control group ______. 7) A) is subjected to the factor whose effect is being tested B) allows for the simultaneous testing of multiple variables C) is required for the validity of discovery science D) serves as a basis of comparison with the experimental group E) serves to increase the sample size of the experiment 1
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8) What is the name given to the reaction that breaks peptide bonds? 8) A) anabolism B) hydrolysis C) hydrogenation D) dehydration reaction E) denaturation 9) Which of the following is an example of a polysaccharide? 9) A) fructose B) starch C) glucose D) maltose E) sucrose 10) DNA nucleotides include ______. 10) A) thymine, guanine, adenine, and cytosine B) thymine, guanine, adenine, and uracil C) thymine, uracil, adenine, and cytosine D) uracil, guanine, adenine, and cytosine E) thymine, guanine, uracil, and cytosine 11) The following molecule is best described as a ______. CH 3 —CH 2 —CH 2 —CH 3 11) A) carbohydrate B) protein C) hydrocarbon D) nucleic acid E) lipid 12) Over a span of two decades, scientists measured changes in the beak size of a population of Galápagos ground finches. This ______. 12) A) led Darwin to his theory of evolution through natural selection B) is an example of artificial selection C) occurred because of selective predation D) provided evidence of natural selection in action E) is an example of overproduction 13) What name is given to bonds that involve the sharing of electrons? 13) A) covalent B) electronic C) hydrogen D) polar E) ionic 14) How do hypotheses differ from theories? 14) A) Hypotheses are educated guesses, and theories are tentative explanations. B) Hypotheses are more generally stated than theories.
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BIO1408-Lecture_Exam1-Ch1-3_Fall2011 - Biology 1408 -...

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