Chapter 1: Problem 29

Which of the following is the correct statement? (a) Endoplasmic reticulum is the site of protein manufacture in bacteria.(b) The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes. (c) The living material inside the cell is called protoplasm. (d) Mesosome is the cell wall extension that helps in photosynthesis.

Short Answer

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a) Endoplasmic reticulum is the site of protein manufacture in bacteria. b) The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes. c) The living material inside the cell is called protoplasm. d) Mesosome is the cell wall extension that helps in photosynthesis. Answer: b) The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes. c) The living material inside the cell is called protoplasm.

Step by step solution

Option (a): Endoplasmic reticulum is the site of protein manufacture in bacteria.

Bacteria are prokaryotic cells, which means they lack membrane-bound organelles such as the endoplasmic reticulum. The site of protein manufacture in bacteria is the ribosomes, which are free-floating in the cytoplasm. Therefore, option (a) is incorrect.

Option (b): The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes.

Membrane-bound inclusion bodies, also known as granules, are found in many prokaryotes and serve to store nutrients and other essential compounds. These inclusions can contain various substances such as lipids, carbohydrates, or inorganic elements. Therefore, option (b) is correct.

Option (c): The living material inside the cell is called protoplasm.

Protoplasm is the general term for the living content of a cell, including the cytoplasm and all other organelles and structures enclosed within the plasma membrane. The term is rarely used in modern cell biology, but the statement is still valid. Therefore, option (c) is also correct.

Option (d): Mesosome is the cell wall extension that helps in photosynthesis.

Mesosomes are folded invaginations of the plasma membrane found in prokaryotic cells, including bacteria. They play a role in various cellular processes such as cellular respiration, cell division, and DNA replication. However, they do not directly participate in photosynthesis. Therefore, option (d) is incorrect. After analyzing each option, both (b) The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes, and (c) The living material inside the cell is called protoplasm, are correct statements.

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Short Answer

Step by step solution

Option (a): Endoplasmic reticulum is the site of protein manufacture in bacteria.

Option (b): The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes.

Option (c): The living material inside the cell is called protoplasm.

Option (d): Mesosome is the cell wall extension that helps in photosynthesis.

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