Question 5 What is a mesosome in a prokaryotic cell? Mention the functions that it performs.
Class XI Biology Chapter - Cell : The Unit of Life Page 141
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Mesosome is a convoluted membranous structure formed in a prokaryotic cell by the invagination of the plasma membrane. Its functions are as follows:
(1) These extensions help in the synthesis of the cell wall and replication of DNA. They also help in the equal distribution of chromosomes into the daughter cells.
(2) It also increases the surface area of the plasma membrane to carry out various enzymatic activities.
(3) It helps in secretion processes as well as in bacterial respiration.
(1) These extensions help in the synthesis of the cell wall and replication of DNA. They also help in the equal distribution of chromosomes into the daughter cells.
(2) It also increases the surface area of the plasma membrane to carry out various enzymatic activities.
(3) It helps in secretion processes as well as in bacterial respiration.
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A mesosome is a unique membranous structure formed by the extensions of plasma membrane into the cell. It it is found attached to the nucleoid, it is known as septal mesosome and is known as lateral mesosome if the mesosome is free from the nucleoid.
Functions of mesosome are as follows
- They help in cell-wall formation
- They help in DNA replication and distribution to daughter cells.
- They also help in respiration, secretion processes, to increase the surface area of the plasma membrane and enzymatic content.
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