wiz-icon
MyQuestionIcon
MyQuestionIcon
4
You visited us 4 times! Enjoying our articles? Unlock Full Access!
Question

Identify the correct statement with respect to ribosomes.

A
They remain united in absence of protein synthesis.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Mg++ concentration affects the binding of two subunits.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
More important for protein synthesis is larger subunit.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of the above.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B Mg++ concentration affects the binding of two subunits.
Ribosomes are submicroscopic polypeptide manufacturing naked granular nucleoprotein organelles which were first seen by Claude in 1941. Cytoplasmic ribosomes of eukaryotes are of 80S type (made up of two subunits of 60S and 40 S type) while their organellar and prokaryotic ribosomes are of 70 S type (made up of two subunits of 50S and 30S type). Magnesium ion is essential for binding the ribosome subunits. The value is 1 to 2 mM for eukaryotes and 0.5 mM in prokaryotes. The subunits separate below this concentration. Disintegration occurs at a magnesium ion level 0.5 mM in eukaryotes and below 0.3 mM in prokaryotes. The ribosomes form dimers when magnesium ion concentration is high.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Endoplasmic Reticulum
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon