Question

Which of the following ribosomes are engaged in protein synthesis in animal cell:

• A. Ribosomes which occur on nuclear membrane and E.R.
• B. Ribosomes of only cytosol
• C. Ribosomes of only nucleolus and cytosol
• D. Ribosomes of only mitochondria and cytosol

Answer 1

Answer: (A)

Ribosomes which occur on nuclear membrane and E.R.

Answer 2

Ribosomes which occur on nuclear membrane and E.R. are engaged in protein synthesis in animal cells. These ribosomes are associated with the endoplasmic reticulum (ER) and are involved in synthesizing proteins for secretion or membrane insertion.

So, the correct option is (A): Ribosomes which occur on nuclear membrane and E.R.