A group of ribosomes attached to mRNA is known as a polysome and the attachment is controlled by:
Correct answer: B. Mg++ ions
- A. Na+ ions
- B. Mg++ ions
- C. Ca·++ ion
- D. K+ ions
Explanation
Ribosomes are composed of two subunits known as large and small, which unites to form the active ribosome during the process of protein synthesis. The increased concentration of Mg2+leads to association of both the units while the decreased concentration favours the dissociation of the units.
This question appeared on the NUMS 2022 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Ribonucleic Acid (RNA)
Ribonucleic acid is generally a single-stranded nucleic acid containing ribose and uracil instead of thymine. Coverage includes mRNA, tRNA and rRNA, complementary base pairing, transcription and translation, and the differences between RNA and DNA in structure, location and biological function.
Practise Biological Molecules
1,790 free Biological Molecules 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.