Question

Gene Expression—Flow of Information from Gene to Protein Tour. For the numbered steps below, select the option that places them in the correct order. 1) The ribosome binds to the mRNA and uses tRNAs to translate mRNA into the corresponding amino acid polypeptide sequence. 2) The spliceosome removes introns. 3) The primary structure of the polypeptide chain undergoes hierarchical foldings to form the tertiary structure. 4) RNA polymerase binds to the promoter region of a gene and initiates transcription.

A) 4, 2, 1, 3
B) 4, 1, 2, 3
C) 1, 4, 2, 3
D) 2, 4, 1, 3

Answer 1

The correct order of the processes involved in the production of a protein is: Transcription, Splicing, Export of mRNA to the cytoplasm, Translation, and Folding of the polypeptide.

Step-by-step explanation:

The correct order of the processes involved in the production of a protein from earliest to latest is as follows:

1. Transcription (RNA polymerase binds to the promoter region of a gene and initiates transcription)
2. Splicing (The spliceosome removes introns)
3. Export of mRNA to the cytoplasm (traveling of mRNA out of the nucleus)
4. Translation (The ribosome binds to the mRNA and uses tRNAs to translate mRNA into the corresponding amino acid polypeptide sequence)
5. Folding of the polypeptide (The primary structure of the polypeptide chain undergoes hierarchical foldings to form the tertiary structure)