Which of the following statements is incorrect regarding the...

Name: Problem 9, Chapter 2: Objective NCERT at your FINGERTIPS: Biology
Uploaded: 2021-10-20T03:44:17-08:00
Duration: 2 min 36 s
Channel: Aflah M
Description: Which of the following statements is incorrect regarding the structure of a typical bacterial cell ? (a) Cells possess naked circular DNA which is folded to form nucleoid. (b) Cells are surrounded by a peptidoglycan cell wall and a mucilaginous sheath. (c) Cells possess well developed membrane bound cell organelles. (d) Ribosomes in these cells are 705 in nature.

Which of the following statements is incorrect regarding the structure of a typical bacterial cell ? (a) Cells possess naked circular DNA which is folded to form nucleoid. (b) Cells are surrounded by a peptidoglycan cell wall and a mucilaginous sheath. (c) Cells possess well developed membrane bound cell organelles. (d) Ribosomes in these cells are 705 in nature.

Which of the following statements is incorrect regarding the structure of a typical bacterial cell ?
(a) Cells possess naked circular DNA which is folded to form nucleoid.
(b) Cells are surrounded by a peptidoglycan cell wall and a mucilaginous sheath.
(c) Cells possess well developed membrane bound cell organelles.
(d) Ribosomes in these cells are 705 in nature.

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Key Concepts

Prokaryotic Cell Organization

Bacterial cells are prokaryotic, meaning they lack the membrane-bound organelles that are characteristic of eukaryotic cells. Their cellular processes occur in the cytoplasm, and they do not have a defined nucleus.

Bacterial Cell Wall

Bacteria typically have a structured cell wall predominantly composed of peptidoglycan, which provides shape and protection. Many bacteria also feature additional components like capsules or sheaths that aid in defense and adhesion.

Bacterial Ribosomes

Bacterial ribosomes are smaller than those in eukaryotic cells, being of the 70S type, which consists of 50S and 30S subunits. This structure is crucial for their protein synthesis and is a common target for antibiotics.

Nucleoid

In bacterial cells, the genetic material is organized in a nucleoid region where the circular DNA is compacted, rather than being enclosed within a nuclear membrane. This allows for efficient regulation and replication of the genome.

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