Discuss the impact of aging on bones, cartilage and muscles with prevention methods.
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Multiple Choice Question
Consider the following statements regarding bacterial biofilms:1. They are highly structured communities of bacteria enclosed in a self-produced polymeric matrix.2. Bacteria within a biofilm use 'quorum sensing' to coordinate gene expression based on population density.3. Biofilm-associated bacteria are generally much more susceptible to antibiotics than free-floating (planktonic) bacteria.Which of the statements is/are FALSE?जीवाणु बायोफिल्म (bacterial biofilms) के संबंध में निम्नलिखित कथनों पर विचार करें:1. वे स्व-निर्मित पॉलीमेरिक मैट्रिक्स में संलग्न बैक्टीरिया के अत्यधिक संरचित समुदाय हैं।2. बायोफिल्म के भीतर बैक्टीरिया जनसंख्या घनत्व के आधार पर जीन अभिव्यक्ति के समन्वय के लिए 'कोरम सेंसिंग' (quorum sensing) का उपयोग करते हैं।3. बायोफिल्म-संबद्ध बैक्टीरिया आम तौर पर मुक्त-तैरने वाले (प्लवक) बैक्टीरिया की तुलना में एंटीबायोटिक दवाओं के प्रति अधिक संवेदनशील होते हैं।कौन सा/से कथन गलत (FALSE) है/हैं?
Explanation:
Statement 3 is FALSE. Bacteria in a biofilm are remarkably MORE resistant to antibiotics and immune responses compared to their planktonic (free-floating) counterparts due to the protective matrix.
कथन 3 गलत है। बायोफिल्म में मौजूद बैक्टीरिया सुरक्षात्मक मैट्रिक्स के कारण अपने प्लवक (मुक्त-तैरने वाले) समकक्षों की तुलना में एंटीबायोटिक दवाओं के प्रति काफी अधिक प्रतिरोधी (resistant) होते हैं।
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This question belongs to the set "Biology Practice Test 12 – Unit 3 (Microbiology & Immunology – SET 4/4)". Click below to read detailed notes and attempt the full quiz.
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