Question:
Choose the correct genus and source of energy of anaerobic gram positive cocci:
Choose the correct genus and source of energy of anaerobic gram positive cocci:
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"Pepto-" in the name usually indicates a preference for protein-derived sources like peptones or amino acids.
Updated On: May 28, 2026
- A, B & C Only
- B & C Only
- A & B Only
- A & D Only
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Concept
Anaerobic gram-positive cocci (GPAC) are a diverse group of bacteria that do not require oxygen for growth and utilize various organic compounds for energy.
Step 2: Meaning
Each genus within this group has specific metabolic preferences for their primary energy source.
Step 3: Analysis
Peptococcus (A) primarily utilizes peptone and amino acids for energy. Peptostreptococcus (B) is well-known for utilizing amino acids and glucose. Ruminococcus (C) typically utilizes cellulose and other complex carbohydrates, not peptone. Sarcina (D) utilizes carbohydrates (like glucose) to produce acid and gas, not oleic acid.
Step 4: Conclusion
Based on established microbiological energy sources, only combinations A and B are correct.
Final Answer: (C)
Anaerobic gram-positive cocci (GPAC) are a diverse group of bacteria that do not require oxygen for growth and utilize various organic compounds for energy.
Step 2: Meaning
Each genus within this group has specific metabolic preferences for their primary energy source.
Step 3: Analysis
Peptococcus (A) primarily utilizes peptone and amino acids for energy. Peptostreptococcus (B) is well-known for utilizing amino acids and glucose. Ruminococcus (C) typically utilizes cellulose and other complex carbohydrates, not peptone. Sarcina (D) utilizes carbohydrates (like glucose) to produce acid and gas, not oleic acid.
Step 4: Conclusion
Based on established microbiological energy sources, only combinations A and B are correct.
Final Answer: (C)
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