Order the four steps shown as they would occur, from beginning to end, during expression of a eukaryotic gene.
(1) Pre-mRNA is processed to make mRNA.
(2) Ribosomes translate the mRNA message to make proteins.
(3) mRNA is transported to the cytoplasm.
(4) DNA is used as a template to make pre-mRNA.
A) 1, 4, 3, 2
B) 4, 3, 1, 2
C) 4, 1, 3, 2
D) 4, 1, 2, 3
E) 1, 2, 4, 3

Question

Order the four steps shown as they would occur, from beginning to end, during expression of a eukaryotic gene. 
(1) Pre-mRNA is processed to make mRNA.
(2) Ribosomes translate the mRNA message to make proteins.
(3) mRNA is transported to the cytoplasm.
(4) DNA is used as a template to make pre-mRNA.
A) 1, 4, 3, 2
B) 4, 3, 1, 2
C) 4, 1, 3, 2
D) 4, 1, 2, 3
E) 1, 2, 4, 3

Quizplus · Accepted Answer

The first step is the transcription of DNA to pre-mRNA, which is shown in option four. After pre-mRNA is synthesized, it undergoes processing to produce mRNA as shown in option one. Then, the mature mRNA is transported to cytoplasm as shown in option three. Finally, ribosomes translate the mRNA into proteins as shown in option two. Therefore, the order is 4, 1, 3, 2, and choice C represents this order.

Order the Four Steps Shown as They Would Occur, from Beginning