1) The basic structure of a nucleotide includes A) amino acids B) tryptophan and leucine C) base, sugar, and phosphate D) mRNA, rRNA, and tRNA E) phosphorus and sulfur 2) Reverse transcriptase is an enzyme found in association with retroviral activity. It has the property of A) synthesis of DNA from an RNA template B) synthesis of RNA from a DNA template C) requiring no template D) translation E) most lysozymes 3) If 15% of the nitrogenous bases in a sample of DNA from a particular organism is thymine, what percentage should be cytosine? A) 15% B) 30% C) 35% D) 40% E) 70% 4) The pyrimidines and the purines in DNA respectively are: cytosine and thymine; adenine and guanine True or false 5) Antiparallel means that the two chains in a double-stranded nucleic acid are connected in opposite directions in terms of 5'-3' orientation. True or False 6) G and C are present in both DNA and RNA. True or False 7) Deoxyribonuclease is an enzyme that adds 3'-hydroxyl groups to RNA. True or False 8) When considering the structure of DNA, we would say that complementary strands are antiparallel. True or False 9) In RNA, uracil is present instead of the thymine in DNA. True or False