12.1 Text B

In the process of ________________, DNA is used as a template for making another type of nucleic acid called RNA.

• translation
• replication
• differentiation
• transcription

In the process of transcription, DNA is used as a template for making another type of nucleic acid called ____________________.

• ATP
• pyruvate
• RNA
• NADPH

The process begins when the enzyme ________________ binds to a region called the promoter.

• RNA polymerase
• DNA replicase
• ATP synthase
• catalase

The process begins when the enzyme RNA polymerase binds to a region called the _____________ .

• promoter
• repressor
• operator
• anticodon

What carries copies of the instructions for assembling proteins?

• mRNA
• tRNA
• introns
• exons
• rRNA

What makes up the subunits of ribosomes?

• mRNA
• tRNA
• introns
• exons
• rRNA

What carries amino acids and matches them to the coded message for assembling proteins?

• mRNA
• tRNA
• introns
• exons
• rRNA

What sections of an mRNA molecule that are removed?

• mRNA
• tRNA
• introns
• exons
• rRNA

What sections of an mRNA molecule that are not removed, and are joined together to form the completed molecule?

• mRNA
• tRNA
• introns
• exons
• rRNA

The diagram shows the process in which pre-mRNA is changed into mRNA. Which events are described in the diagram?

• Introns are removed, and remaining exons are spliced together.
• Exons are removed, and remaining introns are spliced together.
• Introns and exons are removed, and remaining DNA is spliced together.
• Introns are removed, condensed, and then combined again.