BIO1408-Lecture_Exam4-Ch10-11_Fall2011 - Biology 1408...

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Biology 1408 - Lecture Exam 4 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Each question is worth 1 point. 1) DNA and RNA are polymers composed of ______ monomers. 1) A) amino acid B) protein C) carbohydrate D) nucleotide E) fatty acid 2) The backbone of DNA consists of ______. 2) A) a repeating ACTGACTG pattern B) a repeating sugar - nucleotide - sugar - nucleotide pattern C) paired nucleotides D) nitrogenous bases E) a repeating sugar - phosphate - sugar - phosphate pattern 3) The DNA double helix is ______. 3) A) a puzzle to geneticists B) composed of two chromosomes C) composed of adenine and thymine D) made up of two polynucleotide strands E) composed of adenine and guanine 4) RNA contains the nitrogenous base ______ instead of ______, which is only found in DNA. 4) A) nucleotides . . . nucleic acids B) cytosine . . . guanine C) adenine . . . guanine D) a deoxyribose sugar . . . a ribose sugar E) uracil . . . thymine 5) If adenine makes up 20% of the bases in a DNA double helix, what percent of the bases are guanine? 5) A) 80% B) 60% C) 20% D) 30% E) 40% 6) In a DNA double helix, adenine pairs with ______ and guanine pairs with ______. 6) A) uracil . . . cytosine B) cytosine . . . uracil C) guanine . . . adenine D) thymine . . . cytosine E) cytosine . . . thymine 1
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7) Why does the DNA double helix have a uniform diameter? 7) A) Purines pair with pyrimidines. B) C nucleotides pair with A nucleotides. C) Nucleotides bind with nucleoside triphosphates. D) Deoxyribose sugars bind with ribose sugars. E) Nucleotides bind with nucleosides. 8) If one strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand? 8) A) TGAACG B) ACTTGC C) CAGGTA D) CAGGUA E) CUGGTU 9) Who discovered the structure of DNA? 9) A) Watson and Crick B) Pauling C) Hershey and Chase D) Franklin E) Chase 10) Evidence for the spiral nature of DNA came from ______. 10) A) X - ray crystallography studies B) base rule studies C) studies of disease - causing bacteria D) bacteriophage studies E) transforming studies 11) What type of chemical bond joins the bases of complementary DNA strands? 11) A) ionic B) hydrophilic C) covalent D) hydrogen E) hydrophobic 12) Mendel and Morgan did not know about the structure of DNA; however, which of the following of their contributions was (were) necessary to Watson and Crick? 12) A) the particulate nature of the hereditary material B) sex - linkage C) genetic distance and mapping D) dominance vs. recessiveness E) the usefulness of peas and Drosophila 13) After replication, ______. 13) A) each new DNA double helix contains 25% of the old DNA double helix B) each new DNA double helix consists of two new strands C) one new DNA double helix consists of two old strands and the other new DNA double helix consists of two new strands D) each new DNA double helix consists of two old strands E) each new DNA double helix consists of one old strand and one new strand 2
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BIO1408-Lecture_Exam4-Ch10-11_Fall2011 - Biology 1408...

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