Basic Processes
CBSE · Class 11 · Biotechnology
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आनुवंशिक सामग्री के रूप में DNA के पीछे मुख्य विचार क्या है?
Answer
DNA कुछ वायरस को छोड़कर किसी भी जीव की विशेषता या लक्षण निर्धारित करता है। यह वंशानुगत सूचना रखता है जो माता-पिता से संतानों में जाती है।…
What is the main idea behind DNA as the genetic material?
Answer
DNA determines the trait or feature of any organism except a few viruses. It carries hereditary information that is passed from parents to offspring.
Who first isolated DNA and what was the substance called?
Answer
Johann Friedrich Miescher first isolated an acidic substance from nuclei of pus cells and named it nuclein. It contained DNA and protein.
DNA को सबसे पहले किसने अलग किया और उस पदार्थ को क्या कहा जाता था?
Answer
जोहान फ्रेडरिक मीशर ने सबसे पहले मवाद कोशिकाओं के केन्द्रक से एक अम्लीय पदार्थ को अलग किया और उसका नाम न्यूक्लीन रखा। इसमें DNA और प्रोटीन था।…
ग्रिफ़िथ ने 1928 में क्या खोजा?
Answer
फ्रेडरिक ग्रिफिथ ने स्ट्रेप्टोकोकस निमोनिया में परिवर्तन की खोज की। जीवित गैर-विषाणुजनित आर कोशिकाएँ ताप-मृत एस कोशिकाओं से सामग्री लेने के बाद विषाणुजनित हो गईं।…
What did Griffith discover in 1928?
Answer
Frederick Griffith discovered transformation in Streptococcus pneumoniae. Live non-virulent R cells became virulent after taking up material from heat-killed S cells.
Define transformation in bacteria.
Answer
Transformation means transfer of genetic material from one cell to another that alters the genetic makeup of the recipient cell. In Griffith's experiment, R cells changed into virulent S cells.
जीवाणु में परिवर्तन की परिभाषा दीजिए।
Answer
परिवर्तन का अर्थ है एक कोशिका से दूसरी कोशिका में आनुवंशिक पदार्थ का स्थानांतरण जो प्राप्तकर्ता कोशिका की आनुवंशिक संरचना को बदल देता है। ग्रिफ़िथ के प्रयोग में आर कोशिकाएँ उग्र एस कोशिकाओं में बदल गई…
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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