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Q.

Read the following statements
(a) Granular structure
(b) First observed under the electron microscope as dense particles by George Palade
(c) Composed of RNA and proteins
(d) Not surrounded by any membrane
All the above given statements are true for which cell organelle?

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a

Ribosomes         

b

Cristae              

c

Chloroplast

d

Nucleolus       

answer is B.

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Detailed Solution

Ribosomes are the granular structures first observed under the electron microscope as dense particles by George Palade (1953). They are composed of ribonucleic acid (RNA) and proteins and are not surrounded by any membrane.

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