Unit Exam #4 Chapters 16-18,20

Front

What is the resulting RNA sequence from the DNA strand 3' GGCTAAT 5'?

Back

5' CCGAUUA 3'

Front

What type of mutation is indicated by the change from Met - Ala - Lys - Trp - Trp - Pro to Met - Ala - Lys?

Back

Nonsense mutation

Front

What does PCR stand for in molecular biology?

Back

Polymerase chain reaction

Front

Where does DNA replication begin?

Back

At origins of replication sites

Front

Who were the scientists that helped determine the structure of DNA?

Back

Watson, Crick, Wilkins, Franklin

Front

What is the role of RNA polymerase in transcription?

Back

RNA polymerase synthesizes RNA from a DNA template.

Front

Define a silent mutation.

Back

A mutation that does not change the amino acid sequence of a protein.

Front

What is the function of a promoter in gene expression?

Back

A promoter is a DNA sequence that initiates transcription of a gene.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.

Front

What is a codon?

Back

A codon is a sequence of three nucleotides that corresponds to a specific amino acid.