Question

the diagram illustrates a step in the process of translation. drag and drop each label to the correct location on the diagram.
labels: start codon, 5’ end of mrna, growing protein, stop codon, 3’ end of mrna, ribosome

Explanation:

Step1: Identify 5’ end of mRNA

The mRNA is read from 5’ to 3’. The left - most end of the mRNA (where the start codon AUG is closer to) is the 5’ end. So the label “5’ end of mRNA” goes to the left - most dashed box above the mRNA.

Step2: Identify start codon

The start codon for translation is AUG. In the mRNA sequence (AUGCCCACG...), AUG is the start codon. So the label “start codon” goes to the dashed box above AUG.

Step3: Identify growing protein

The chain of amino acids (Met, Pro,...) is the growing polypeptide (protein) chain. So the label “growing protein” goes to the dashed box above the Met - Pro chain.

Step4: Identify ribosome

The yellow structure that is associated with the mRNA and tRNAs is the ribosome. So the label “ribosome” goes to the dashed box around the yellow structure.

Step5: Identify stop codon

The stop codon in the mRNA sequence is UAG. So the label “stop codon” goes to the dashed box above UAG.

Step6: Identify 3’ end of mRNA

The right - most end of the mRNA (where UAG is closer to) is the 3’ end. So the label “3’ end of mRNA” goes to the right - most dashed box above the mRNA. Also, the tRNA with the anticodon that would interact with the stop codon or the area related to the end of translation: the tRNA - like structure on the right side of the ribosome (the small black dot) is related to the end, but the 3’ end of mRNA is the right - most end of the mRNA strand.

Answer:

• 5’ end of mRNA: Left - most dashed box above mRNA.
• start codon: Dashed box above AUG.
• growing protein: Dashed box above Met - Pro chain.
• ribosome: Dashed box around yellow structure.
• stop codon: Dashed box above UAG.
• 3’ end of mRNA: Right - most dashed box above mRNA.