Question

what is the correct order of occurrence for the steps of protein synthesis?

1. mrna is produced in nucleus.
2. ribosome moves along mrna,
3. dna uncoils for transcription.
4. polypeptide is produced.
5. trna brings amino acids to ribosome.
6. mrna moves to ribosome.

2, 4, 6, 1, 3, 5

2, 1, 5, 4, 3, 6

1, 5, 3, 4, 2, 6

3, 5, 1, 6, 2, 4

3, 1, 6, 2, 5, 4

Explanation:

To determine the correct order of protein synthesis steps:

1. Transcription Initiation: DNA must uncoil (step 3) to allow transcription.
2. Transcription: mRNA is produced in the nucleus (step 1) from the uncoiled DNA.
3. mRNA Transport: mRNA moves from the nucleus to the ribosome (step 6).
4. Translation Initiation: Ribosome moves along mRNA (step 2) to start translation.
5. tRNA Action: tRNA brings amino acids to the ribosome (step 5) to build the polypeptide.
6. Polypeptide Production: Finally, the polypeptide is produced (step 4).

This matches the sequence: 3, 1, 6, 2, 5, 4.

Answer:

3, 1, 6, 2, 5, 4 (the last option: 3,1,6,2,5,4)