Navigate

Which one of the cell organelles is not enclosed by any membrane

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.

JK1998
admin:

Related Questions

  1. Addition of a solute to pure water causes
  2. Photosynthetic pigments in chloroplast are embedded in the membrane of
  3. Which of the following is not a function of the skeletal system?
  4. Most of the water, in mature plant cells, occurs chiefly in which of the following?
  5. Which one of the following structures in Pheretima is correctly matched with its function?