Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETBotanyCell - The Unit of Life

Most prokaryotic cells have a chemically complex cell envelope consisting of a tightly bound three-layered structure. Which specific layer of this envelope undergoes extension into the cytoplasm to form the structure that helps in DNA replication and its distribution to daughter cells?

Options

  1. APlasma membrane
  2. BCell wall
  3. CGlycocalyx
  4. DOuter membrane

Correct answer

A. Plasma membrane

Step-by-step solution

The structure that helps in DNA replication and its distribution to daughter cells in prokaryotes is the mesosome. According to NCERT, a special membranous structure is the mesosome which is formed by the extensions of the plasma membrane into the cell. These extensions are in the form of vesicles, tubules and lamellae. The cell envelope consists of a tightly bound three-layered structure: the outermost glycocalyx, followed by the cell wall and then the plasma membrane. It is the innermost layer (plasma membrane) t

Practice Cell - The Unit of Life on Quantrex Academy →

More from Cell - The Unit of Life

Choose the correct statements regarding cell organelles and their inclusions. A. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria. B. Rough en 2026The plastid that stores xanthophyll is known as __________. 2026Which of the following are characteristics of prokaryotic cells ? (a) Ribosomes are made of 50S and 30S subunits (b) They can have plasmids (c) They contain mesosome (d) They have 2026Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are : 2026Match List-I with List-II . List-I List-II A. Cristae I. Flat membrane sacs in stroma of chloroplast B. Cisternae II. Infoldings in mitochondria C. Thylakoids III. Cell membrane D. 2026Cell theory was formulated by __________. 2026Mitochondrial inner membrane encloses__________. 2026Which one of the following is the site for active ribosomal RNA synthesis ? 2026 Full Cell - The Unit of Life list All NEET PYQs