Class 8 Exam > Class 8 Questions > Cell wall of bacteria contains :a)phospholipi...
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Cell wall of bacteria contains :
- a)phospholipid
- b)ribonucleic acid
- c)peptidoglycan
- d)deoxyribonucleic acid
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)pept...
Cell of bacteria consists of peptidoglycan. This kind of glucose forms rigid structure around the bacterial body.
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Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)pept...
Introduction to Bacterial Cell Wall
The cell wall is a crucial structure in bacteria, providing shape, protection, and rigidity. It distinguishes bacterial cells from those of other organisms.
Composition of Bacterial Cell Wall
- The primary component of the bacterial cell wall is peptidoglycan.
- Peptidoglycan is a complex polymer made up of sugars and amino acids.
Structure of Peptidoglycan
- Sugar Chains: It consists of long chains of repeating units of two sugars, N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM).
- Peptide Cross-links: These sugar chains are cross-linked by short peptide chains, providing structural integrity.
Functions of Peptidoglycan
- Shape Maintenance: It helps maintain the shape of the bacterial cell and prevents it from bursting in a hypotonic environment.
- Protection: The cell wall acts as a barrier against harmful substances, contributing to the bacteria's defense mechanisms.
Comparison with Other Options
- Phospholipid: While phospholipids are essential in forming cell membranes, they are not a part of the cell wall.
- Ribonucleic Acid (RNA): RNA is involved in protein synthesis and is not a structural component of the cell wall.
- Deoxyribonucleic Acid (DNA): DNA carries genetic information but does not contribute to the cell wall's structure.
Conclusion
In summary, the correct answer is peptidoglycan, as it is the main component that makes up the bacterial cell wall, providing essential functions for the survival of bacteria.
The cell wall is a crucial structure in bacteria, providing shape, protection, and rigidity. It distinguishes bacterial cells from those of other organisms.
Composition of Bacterial Cell Wall
- The primary component of the bacterial cell wall is peptidoglycan.
- Peptidoglycan is a complex polymer made up of sugars and amino acids.
Structure of Peptidoglycan
- Sugar Chains: It consists of long chains of repeating units of two sugars, N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM).
- Peptide Cross-links: These sugar chains are cross-linked by short peptide chains, providing structural integrity.
Functions of Peptidoglycan
- Shape Maintenance: It helps maintain the shape of the bacterial cell and prevents it from bursting in a hypotonic environment.
- Protection: The cell wall acts as a barrier against harmful substances, contributing to the bacteria's defense mechanisms.
Comparison with Other Options
- Phospholipid: While phospholipids are essential in forming cell membranes, they are not a part of the cell wall.
- Ribonucleic Acid (RNA): RNA is involved in protein synthesis and is not a structural component of the cell wall.
- Deoxyribonucleic Acid (DNA): DNA carries genetic information but does not contribute to the cell wall's structure.
Conclusion
In summary, the correct answer is peptidoglycan, as it is the main component that makes up the bacterial cell wall, providing essential functions for the survival of bacteria.
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Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)peptidoglycand)deoxyribonucleic acidCorrect answer is option 'C'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)peptidoglycand)deoxyribonucleic acidCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)peptidoglycand)deoxyribonucleic acidCorrect answer is option 'C'. Can you explain this answer?.
Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)peptidoglycand)deoxyribonucleic acidCorrect answer is option 'C'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)peptidoglycand)deoxyribonucleic acidCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Cell wall of bacteria contains :a)phospholipidb)ribonucleic acidc)peptidoglycand)deoxyribonucleic acidCorrect answer is option 'C'. Can you explain this answer?.
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