Chapter 4 DNA,RNA,and the Flow of Genetic Information 2 7 Organisms in which the flow of genetic information can be RNA->DNA. Ans:g Section:4.3 8 Codons that specify the same amino acids are termed Ans:c Section:4.5 9 A three-base codon defines a specific Ans:e Section:4.5 10 Stop codons are read by Ans:j Section:4.5 Fill in the Blank Questions 1 The enzyme that is capable of synthesizing DNA from an RNA template is Ans:reverse transcriptase Section:4.3 2 is the most abundant type of RNA in a cell. Ans:Ribosomal RNA Section:4.4 and Table 4.2. 3 Each amino acid residue in a protein is encoded by a set of three bases on mRNA referred to as a Ans:codon Section:4.5 4 In an amino acyl-tRNA,the amino acid is attached to the CCA sequence at the end of the tRNA. Ans:3'Section:4.4 5 mRNA higher organisms are formed by splicing together expressed regions after removal of Ans:introns Section:4.6 6 In bacterial mRNA,the initiating AUG codon is preceded several nucleotides away by a purine- rich sequence called the which base-pairs with a complimentary sequence in an rRNA. Ans:Shine-Dalgarno sequence Section:4.5 Page2Chapter 4 DNA, RNA, and the Flow of Genetic Information Page 2 2 7 ____________ Organisms in which the flow of genetic information can be RNADNA. Ans: g Section: 4.3 8 Codons that specify the same amino acids are termed ____________. Ans: c Section: 4.5 9 A three-base codon defines a specific ____________. Ans: e Section: 4.5 10 Stop codons are read by ____________. Ans: j Section: 4.5 Fill in the Blank Questions 1 The enzyme that is capable of synthesizing DNA from an RNA template is __________________. Ans: reverse transcriptase Section: 4.3 2 __________________ is the most abundant type of RNA in a cell. Ans: Ribosomal RNA Section: 4.4 and Table 4.2. 3 Each amino acid residue in a protein is encoded by a set of three bases on mRNA referred to as a __________________. Ans: codon Section: 4.5 4 In an amino acyl-tRNA, the amino acid is attached to the CCA sequence at the _________ end of the tRNA. Ans: 3' Section: 4.4 5 mRNA higher organisms are formed by splicing together expressed regions after removal of __________________. Ans: introns Section: 4.6 6 In bacterial mRNA, the initiating AUG codon is preceded several nucleotides away by a purine￾rich sequence called the __________________ , which base-pairs with a complimentary sequence in an rRNA. Ans: Shine-Dalgarno sequence Section: 4.5