Gene Expression (AP)

If an mRNA molecule has introns and exons in it, where is it?

• At a ribosome
• In the nucleus
• In a prokaryotic cell
• could be in the nucleus or the ribosome

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?

• The two different cells become mutated

• The proteins expressed in each cell are different

• They actually have different DNA in the two types of cells.

• The genome of the different cells changes

What enzyme is responsible for adding nucleotides to the growing RNA strand?

• DNA Polymerase
• RNA Primase
• RNA Polymerase
• Topoisomerase

What transcript would be produced by the following DNA sequence?
5'-CCGTAC-3'

• 5-GTACGG-3'
• 5'-GGCAUG-3'
• 5'-GUACGG-3'
• 5'-GGCATG-3'

A single base pair substitution will always result in an different amino acid sequence.

• True
• False

Which of these is not a part of RNA processing?

• 5' cap

• chromatin packaging

• 3' Poly A tail

• splicing

Which of these mRNA sequences will a ribosome seek out in order to start translation?

• TAT
• UAC
• AUG
• None of these

Which molecule can we find the promoter and terminator in?

• DNA
• mRNA
• tRNA
• polypeptide chain

Which types of cells can experience transcription and translation simultaneously?

• Eukaryotes
• Prokaryotes
• Eukaryotes and Prokaryotes
• No cells can

What structure is responsible for the splicing of the pre-mRNA?

• Nucleus
• RNAse
• Spliceosome
• ribozymes