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Which one of the cell organelles is not enclosed by any membrane?
Options
(a) lysosome
(b) ribosome
(c) mitochondria
(d) plastid
Correct Answer:
ribosome
Explanation:
Ribosomes are naked ribonucleoprotein protoplasmic particles which function as the site for protein synthesis. Therefore they are popularly known as protein factories. Ribosomes are produced in nucleolus and occur on nuclear membrane & RER. It is also present in cytoplasm in prokaryotes and eukaryotes. Chemically ribosome is made up of rRNA (60%) protein (40%). As ribosomes, nucleolus and centrioles are also membrane less cell organelles.
Related Questions: - Peripatus is known as a connecting link, becuase it has the characters of both
- Global warming can be controlled by :
- Which of the following is a recessive trait in garden pea?
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- MAB of UNESCO stands for
Topics: Cell Structure and Functions
(413)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Peripatus is known as a connecting link, becuase it has the characters of both
- Global warming can be controlled by :
- Which of the following is a recessive trait in garden pea?
- Which of the following biomolecules does have phosphodiester bond?
- MAB of UNESCO stands for
Topics: Cell Structure and Functions (413)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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