WaltersPractice_Exam5-2005-1

WaltersPractice_Exam5-2005-1 - Practice Test for Exam 5 Dr....

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Practice Test for Exam 5 Dr. Linda Walters: Fall 2005 Chapters: 17, 18, 22, 23 (excluding Hardy-Weinberg calculations) Chapter 17: 1. What is the codon part of? a. DNA b. tRNA c. mRNA d. ribosome e. activating enzyme 2. What is the relationship among DNA, a gene and a chromosome? a. a chromosome contains hundreds of genes that are composed of protein b. a chromosome contains hundreds of genes that are composed of DNA c. a gene contains hundreds of chromosomes that are composed of protein d. a gene is composed of DNA, but there is no relationship to a chromosome e. a gene contains hundreds of chromosomes that are composed of DNA 3. A particular triplet of bases in the coding sequence of DNA is AGT. What is the corresponding triplet in the complementary strand of mRNA? a. AGT b. UCA c. TCA d. GAC 4. All of the following are directly involved in translation EXCEPT: a. mRNA b. tRNA c. ribosomes d. DNA e. amino-acid activating enzymes 5. Which point mutation would be most likely to have a catastrophic effect on the functioning of a protein? a. a base substitution b. a base deletion near the start of the coding sequence c. a base deletion near the end of the coding sequence, but not in the terminator codon d. deletion of three bases near the start of the coding sequence, but not in the initiator codon e. a base insertion near the end of the coding sequence, but not in the terminator codon 6. Choose the answer that has these events of protein synthesis in the proper sequence: 1. An aminoacyl-tRNA binds to the A site 2. tRNA translocates to the P site 3. tRNA leaves the E site and the E site remains vacant 4. A small ribosomal subunit associates with mRNA 5. peptide bond formation between amino acids in growing chain
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This note was uploaded on 04/20/2008 for the course CHM 1032 taught by Professor Walters during the Fall '05 term at University of Central Florida.

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WaltersPractice_Exam5-2005-1 - Practice Test for Exam 5 Dr....

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