Biology Ch. 8 Vocabulary Test

A(n) ______ is a virus that injects its DNA in a bacterium

• bacteriophage

• intron

• operon

A mutation in which one nucleotide is substituted for another is a ____

• promoter

• frameshift mutation

• point mutation

A change in an organisms DNA is a(n) ______

• stop codon

• mutation

• anticodon

A(n) ______ is a set of three nucleotides that is complementary to an mRNA codon

• frameshift mutation

• anticodon

• promoter

A process that converts an mRNA message into a polypeptide is

• replication

• transcription

• translation

In eukaryotic cells a(n) ____ is a nucleotide segment that codes for parts of the protein

• exon

• operon

• intron

A DNA segment that allows a gene to be transcribed is a ______

• point mutation

• bacteriophage

• promoter

A _____ involves the insertion or deletion of a nucleotide in the DNA sequence

• DNA polymerase

• frameshift mutation

• point mutation

the ___ states that information flows in one direction, from DNA to RNA to proteins

• central dognma

• promoter

• exon

A chain of nucleotides, each made of ribose sugar, a phosphate group, and a nitrogen-containing base is known as _____

• RNA

• tRNA

• mRNA