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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2020 · Paper I, General Studies · Q91 of 120

Geo-Scientist Prelims 2020 General Studies Q91: Which one of the following correctly represents RER?

QuestionBiology / cell

Which one of the following correctly represents RER?

  1. (a) Endoplasmic reticulum having no ribosomes attached to its surface
  2. (b) Endoplasmic reticulum having ribosomes attached to its surface
  3. (c) Endoplasmic reticulum with rounded vesicles
  4. (d) Endoplasmic reticulum with Golgi appears on its surface

Answer: (b) Endoplasmic reticulum having ribosomes attached to its surface

RER = rough endoplasmic reticulum: studded with ribosomes, makes proteins for secretion and membranes. SER has no ribosomes and makes lipids, detoxifies.

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