Which plant is known as the 'King of Spices'?
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Multiple Choice Question
Which structural feature is absolutely essential for the transport of dimeric IgA across epithelial barriers into mucosal secretions (like saliva or breast milk) and protects it from proteolytic degradation?उपकला (epithelial) बाधाओं के पार श्लेष्म स्राव (जैसे लार या स्तन के दूध) में डिमेरिक IgA के परिवहन के लिए कौन सी संरचनात्मक विशेषता अत्यंत आवश्यक है और इसे प्रोटियोलिटिक क्षरण से बचाती है?
Explanation:
Dimeric IgA binds to the poly-Ig receptor on the basolateral surface of epithelial cells. The receptor is cleaved during transport, and a portion of it (the secretory component) remains attached to IgA to protect it in the harsh mucosal environment.
डिमेरिक IgA उपकला कोशिकाओं की सतह पर पॉली-Ig रिसेप्टर से जुड़ता है। परिवहन के दौरान रिसेप्टर का एक हिस्सा (स्रावी घटक) श्लेष्म वातावरण में इसकी रक्षा के लिए IgA से जुड़ा रहता है।
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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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