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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.
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Topics: Cell Structure and Functions
(413)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Nitrogen is absorbed by plants in form of
- Heating food to 100° C will prevent all but following diseases
- What is the name of the book written by aristotle
- In gel electrophoresis, differential mobility of DNA depends upon
- About 98 percent of the mass of every living organism is composed of just six element
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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