1. Tardigrade
  2. Question
  3. Biology
  4. Ribosomes are I. Non-membrane bound. II. Absent in plastids and mitochondria. III. Present in the cytoplasm and RER. IV. Take part in protein synthesis. Which of the following option is most appropriate?

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Q. Ribosomes are
I. Non-membrane bound.
II. Absent in plastids and mitochondria.
III. Present in the cytoplasm and RER.
IV. Take part in protein synthesis.
Which of the following option is most appropriate?

Cell : The Unit of Life

Solution:

Statements I, III and IV are correct and II is incorrect and can be corrected as
Ribosomes are present in mitochondria and chloroplast (plastids). Both of these organelles contain $70\, S$ ribosomes.