DNA Transcription and Translation Quiz

What is the first step in the process of gene expression?

• Translation

• Elongation

• Replication

• Transcription

What enzyme is responsible for synthesizing mRNA during transcription?

• DNA polymerase

• RNA polymerase

• Helicase

• Ligase

What is the role of transcription factors?

• To unwind the DNA double helix

• To terminate transcription

• To bind to the promoter and help RNA polymerase initiate transcription

• To synthesize DNA

Which strand of DNA is used as the template for mRNA synthesis?

• Leading strand

• Nontemplate strand

• Sense strand

• Antisense strand

What is the start codon for translation?

• UAA

• AUG

• UGA

• UAG

What molecule carries amino acids to the ribosome during translation?

• rRNA

• mRNA

• tRNA

• DNA

How many different possible codons are there?

• 16

• 20

• 128

• 64

What is the function of a ribosome during translation?

• To unwind DNA

• To synthesize proteins

• To synthesize RNA

• To synthesize DNA

What happens when RNA polymerase reaches the end of a gene?

• Replication

• Termination

• Elongation

• Initiation

What is the reading frame in the context of mRNA translation?

• The sequence of amino acids

• The arrangement of nucleotides into codons

• The sequence of tRNA molecules

• The structure of the ribosome