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Q.
Which one of the following organelles lack membranes?
BVP MedicalBVP Medical 2004
Solution:
The ribosomes are the smallest cell organelle measuring 170-230 $ \overset{0}{\mathop{\text{A}}}\, $ in diameter unlike other cell organdies, they are not bound by any unit membrane. The ribosomes are concerned with protein synthesis the nucleolus plays pivotal role in the biogenesis of ribosomes.