What is not true about ribosomes?

Made of two subunitsFrom polysomeMay attach to mRNAHave no role in protein synthesis

Índice Show

Which of the following is incorrect about ribosome?
What is true about the ribosomes?
What are 3 facts about ribosomes?
Which is not true of ribosomes function in translation?

Solution : Ribosomes are cell organelles that are formed of two subunits. They are capable of forming polyribosomes during which many ribosomes are attached to mRNA. The purpose of ribosomes moving on mRNA is to synthesise proteins i.e, translation. Indeed, ribosomes have a very direct role in protein synthesis.

Made up of two sub-units Form polysomemay attach to mRNAHave no role in protein synthesis

Solution : Ribosomes are truly callad as protein factory and they play a vital role in protein synthesis. Thus, the statement that ribosomes have no role in protein synthesis is not true.
Other statements are true for ribosome
Ribosomes are made up of two subunits, i.e., large and small. In prokaryotes it is 70S (50S and 30S). In eukarynotes it is 80S (60S ,and 40S).
Polyribosomes
Several ribosomes attach to a single mRNA and form a chain like structrue,
Polysomes
They are formed by the attachment of ribosomes with mRNA.

Which of the following is incorrect about ribosome?

The cytoplasmic ribosomes (cytoribosomes) may remain free in the cytoplasmic matrix or are attached to the cytosolic surface of endoplasmic reticulum. So, the correct answer is 'Absent in chloroplast and mitrochondria'.

What is true about the ribosomes?

Ribosomes are specialized cell organelles and found in both prokaryotic and eukaryotic cells. Every living cell requires ribosomes for the production of proteins. The ribosome is composed of ribosomal RNAs and ribosomal protein. Therefore, this statement is true.