Polyribosomes are aggregates of:
Correct answer: D. Several ribosomes held together by string of mRNA
- A. Ribosomes and rRNA
- B. Only rRNA
- C. Peroxisomes
- D. Several ribosomes held together by string of mRNA
Explanation
Polyribosomes, also known as polysomes, are clusters of several ribosomes bound to a single mRNA molecule. These ribosomes work simultaneously to translate the mRNA sequence into a polypeptide chain during protein synthesis. Polyribosomes play a critical role in increasing the efficiency of protein production in the cell.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
Practise Cell Structure and Function
2,478 free Cell Structure and Function 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.
More Cell Structure and Function questions
Nucleoproteins are synthesised in:
Magnification of a compound microscope is not connected to:
The latest model for plasma membrane is called the:
Plasma membrane is made of:
Organelles can be separated from cell homogenate through:
Acetabularia used in Hammerling's nucleocytoplasmic experiments is a/an: