Protein Synthesis Quiz

What is the primary structural difference between DNA and RNA?

• RNA contains uracil instead of thymine.

• RNA is found only in the nucleus.

• DNA contains ribose sugar, while RNA contains deoxyribose sugar.

• DNA is a single strand, while RNA is a double helix.

What role do transcription factors play in the cell?

• They transport mRNA out of the nucleus.

• They bind to DNA to regulate transcription.

• They help DNA replicate.

• They convert RNA into proteins.

During transcription, what signals the start of the process?

• The release of mRNA from the nucleus.

• The binding of RNA polymerase to the promoter.

• The presence of a start codon.

• The unwinding of the DNA double helix.

What is the function of tRNA during translation?

• It transports amino acids to the ribosome.

• It carries the genetic code from the nucleus.

• It unwinds the DNA double helix.

• It forms the structure of ribosomes.

What happens when the ribosome reaches a stop codon during translation?

• The ribosome starts a new translation cycle.

• The mRNA is released and the protein chain is completed.

• The mRNA is destroyed immediately.

• The ribosome disassembles and releases tRNA.