Which cell organelle is described by the following statements?
$(A)$ Granular structure.
$(B)$ First observed under an electron microscope as dense particles by $George\, Palade$.
$(C)$ Composed of $RNA$ and proteins.
$(D)$ Not surrounded by any membrane.

  • A
    Nucleolus
  • B
    Ribosomes
  • C
    Cristae
  • D
    Chloroplast

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