Which of the following refers to the region of RNA responsible for binding ribosomes during prokaryotic translation?
Correct answer: D. Shine-Dalgarno sequence
- A. TATA box
- B. Promoter
- C. Terminator
- D. Shine-Dalgarno sequence
Explanation
The correct answer is D) Shine-Dalgarno sequence. The Shine-Dalgarno sequence is a short RNA sequence found in the mRNA of prokaryotic cells, specifically in the 5' untranslated region (UTR). It is located upstream of the start codon (AUG) that signals the beginning of translation. The Shine-Dalgarno sequence base pairs with the complementary sequence on the 16S rRNA of the small ribosomal subunit during the initiation of translation. This interaction positions the ribosome correctly on the mRNA to start translation. The Shine-Dalgarno sequence is essential for the efficient initiation of translation in prokaryotic cells.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Kingdom Prokaryotae
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.