TEST BANK FOR MOLECULAR DIAGNOSTICS : FUNDAMENTALS, METHODS, AND CLINICAL APPLICATIONS, 3RD EDITION, LELA BUCKINGHAM

Chapter 1: Nucleic Acids and Proteins Multiple Choice 1. DNA contains deoxyribonucleotide triphosphates joined together by what type of covalent bond? A. Aldehyde B. Ester C. Phosphodiester D. Peptide ANS: C OBJ: 1-2 2. Nucleotides in DNA consist of which of the following? A. Nitrogen base, deoxyribose, and phosphate B. Nitrogen base, ribose, and sulfur C. Carbon base, ribose, and phosphate D. Carbon base, glucose, and carboxyl ANS: A OBJ: 1-1 3. Which of the five ribose carbons of the deoxyribonucleotide are involved in the formation of the DNA chain? A. 1' and 5' B. 2' and 4' C. 3' and 4' D. 3' and 5'ANS. D OBJ: 1-23 4. In a DNA molecule, one end has a free hydroxyl group, and one end has a free A. phosphate group. B. hydroxyl group. C. amino group. D. carboxyl group. ANS: A OBJ: 1-1 5. What type of bonds spontaneously form between two complementary strands of DNA? A. Hydrogen bonds B. Covalent bonds C. Phosphodiester bonds D. Polar covalent bonds ANS: C OBJ: 1-2 6. In a double-stranded DNA molecule, base pairing between strands occurs between A. a purine and a purine. B. a pyrimidine and a pyrimidine. C. a purine and a pyrimidine. D. all types of nucleotide bases. ANS: C OBJ: 1-1 7. Which of the following is a purine? A. Thymine B. Cytosine C. Adenine D. Alanine ANS: C