1. Tardigrade
  2. Question
  3. Biology
  4. Consider the following statements regarding mesosomes: a. It may be present in the form of vesicles, tubules and lamellae. b. It helps in cell wall secretion, cell respiration, DNA replication and cell division c. It increases the surface area of the cell wall and enzymatic content. d. It contains oxidative enzymes. Which of the above statements are true?

Q. Consider the following statements regarding mesosomes:
a. It may be present in the form of vesicles, tubules and lamellae.
b. It helps in cell wall secretion, cell respiration, DNA replication and cell division
c. It increases the surface area of the cell wall and enzymatic content.
d. It contains oxidative enzymes.
Which of the above statements are true?

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Solution:

A special membranous structure called the mesosome is formed by the extensions of the plasma membrane into the cell. These extensions are in the form of vesicles, tubules and lamellae. They help in cell wall formation, 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. In some prokaryotes like cyanobacteria, there are other membranous extensions into the cytoplasm called chromatophores which contain pigments.