Q1.Non membrane bound pair of cell organelles among the following
(A) Chloroplast, mitochondria
(B) ER. Golgi apparatus
(C) Nucleus, vacuole
(D) Centriole, Ribosome
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Explanation:
Among the options, Centriole And Ribosome (OPTION D) are non membrane bound organelles.
Detailed discussion:
Ribosome are small spherical cellular organelles, responsible for protein synthesis inside the cell.
The ribosomes contain two subunits (for eukaryotes, the subunits are 40S and 60S) and (for prokaryotes, the subunits are 50S and 30S).
The ribosomes attach to the mRNA chain and form a structure known as POLYSOME.
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Centrioles are paired structures, which are barrel shaped located in the cytoplasm of the cell.
They help to organise the microtubules inside the cells, hence maintain the cytoskeletal framework of the cell.
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