Chapter 21

What is the complementary base for thymine? a. adenine b. cytosine c. guanine d. uracil

Although the amount of any particular base in DNA will vary among individuals, the amount of guanine will always equal the amount of a. thymine. b. adenine. c. cytosine. d. uracil

A codon is located on a. DNA. b. mRNA. c. tRNA. d. rRNA.

Translation produces a. a polypeptide chain. b. mRNA complementary to a template strand of DNA. c. tRNA complementary to mRNA. d. rRNA.

Choose the incorrect statement about restriction enzymes. a. They are used to create recombinant plasmids. b. They are necessary for translation. c. They are used to produce DNA fingerprints. d. They cut DNA at specific sequences.

Which codon on mRNA is the start signal for translation? a. CUG b. ATC c. AUG d. UAA

The polymerase chain reaction is a technique used to a. attach amino acids to a growing polypeptide chain. b. increase the number of copies of a small sample of DNA. c. splice DNA into a plasmid. d. regulate the transcription of genes.

What is a genome? a. a technique for creating recombinant DNA b. a technique for determining which genes are active under certain conditions c. the coding sequence of a gene d. the entire set of genes carried by one member of a species

What is microarray analysis? a. a technique for creating recombinant DNA b. a technique for determining which genes are active under certain conditions c. a technique used to identify the coding sequence of a gene d. the entire set of genes carried by one member of a species