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  4. Ribosome is an organelle observed in a eukaryotic cell involved in protein synthesis. Ribosome of a eukaryote is 80S type. It is associated with which of these? I. Plasmid II. Mitochondrion III. Nucleus IV. Golgi Body V. Endoplasmic Reticulum

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Q. Ribosome is an organelle observed in a eukaryotic cell involved in protein synthesis. Ribosome of a eukaryote is 80S type. It is associated with which of these?
I. Plasmid
II. Mitochondrion
III. Nucleus
IV. Golgi Body
V. Endoplasmic Reticulum

NTA AbhyasNTA Abhyas 2022

Solution:

Ribosomes are not membrane bound. They are found to be composed of ribonucleic acid (RNA) and protein. Ribosomes are found attached to RER (V) or freely in the cytoplasm of a eukaryote. Ribosomes are also, found in the nucleus (III) where they are synthesized by nucleolus. Mitochondria are known to contain their own protein synthesis machinery. Thus, they have ribosomes but it is of 70S type. Golgi body is not known to contain any type of its own ribosomes. Plasmid is extra chromosomal DNA in the bacterial cell without attached to any ribosome.