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Biotechnology Isolation of DNA MCQ Questions for Class 11 General

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01 Practice Topic Cutting of DNA 592 MCQs

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Question 221/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

NanoDrop जैसे उपकरण से क्या अनुमान लगाया जा सकता है?

What can be estimated using an instrument like NanoDrop?

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C. DNA concentration और purity ratiosDNA concentration and purity ratios

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NanoDrop absorbance से DNA concentration और purity ratios estimate करता है। यह quick quality check देता है। / NanoDrop estimates DNA concentration and purity ratios by absorbance. It gives quick quality check.

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Question 222/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

Fluorometric DNA quantification absorbance से कब बेहतर हो सकता है?

When can fluorometric DNA quantification be better than absorbance?

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D. specific double-stranded DNA amount जानना होWhen specific double-stranded DNA amount is needed

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Fluorometric methods DNA-specific dyes use कर सकते हैं। यह contaminants के बीच अधिक specific हो सकता है। / Fluorometric methods can use DNA-specific dyes. This can be more specific among contaminants.

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Question 223/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

Gel electrophoresis से DNA quantity का क्या अनुमान मिल सकता है?

What quantity estimate can gel electrophoresis provide for DNA?

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A. band intensity से approximate amountApproximate amount from band intensity

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Known ladder या standard से band intensity compare कर approximate DNA amount देख सकते हैं। यह rough estimate है। / Band intensity can be compared with a known ladder or standard for approximate DNA amount. It is a rough estimate.

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Question 224/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA ladder gel electrophoresis में क्यों उपयोगी है?

Why is a DNA ladder useful in gel electrophoresis?

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B. size comparison के लिएFor size comparison

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DNA ladder known sizes के fragments देता है। इससे sample DNA band size estimate होता है। / A DNA ladder provides fragments of known sizes. This helps estimate sample DNA band size.

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Question 225/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

Gel पर बहुत नीचे छोटे fragments दिखें तो क्या संकेत हो सकता है?

If very low small fragments appear on a gel what can it indicate?

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C. degraded या fragmented DNADegraded or fragmented DNA

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छोटे fragments DNA breakdown का संकेत दे सकते हैं। Handling और nuclease control check करें। / Small fragments can indicate DNA breakdown. Check handling and nuclease control.

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Question 226/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA का gel में positive electrode की ओर जाना किस कारण होता है?

Why does DNA move toward the positive electrode in a gel?

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D. DNA negatively charged होता हैDNA is negatively charged

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DNA phosphate backbone के कारण negatively charged होता है। इसलिए electric field में positive electrode की ओर जाता है। / DNA is negatively charged due to phosphate backbone. Therefore it moves toward the positive electrode in an electric field.

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Question 227/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA extraction में cross-contamination कैसे घटाई जा सकती है?

How can cross-contamination be reduced in DNA extraction?

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A. fresh tips और proper labelling सेBy fresh tips and proper labelling

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Fresh tips और careful handling samples को mix होने से बचाते हैं। Labels identity सुरक्षित रखते हैं। / Fresh tips and careful handling prevent samples from mixing. Labels protect identity.

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Question 228/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

Aerosol-resistant tips DNA work में क्यों useful हैं?

Why are aerosol-resistant tips useful in DNA work?

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B. sample-to-sample contamination घटाने के लिएTo reduce sample-to-sample contamination

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Aerosol-resistant tips aerosol contamination का risk कम करती हैं। Sensitive DNA work में यह useful है। / Aerosol-resistant tips reduce aerosol contamination risk. They are useful in sensitive DNA work.

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Question 229/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA extraction में gloves बदलना कब अच्छा practice है?

When is changing gloves a good practice in DNA extraction?

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C. different samples handle करते समयWhile handling different samples

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Dirty gloves contaminants या nucleases transfer कर सकते हैं। Different samples में clean handling जरूरी है। / Dirty gloves can transfer contaminants or nucleases. Clean handling is needed between different samples.

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Question 230/294 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA isolation में sterile nuclease-free consumables क्यों जरूरी हैं?

Why are sterile nuclease-free consumables important in DNA isolation?

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D. contamination और DNA degradation घटाने के लिएTo reduce contamination and DNA degradation

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Nuclease-free tubes और tips DNA को टूटने से बचाते हैं। Sterility sample contamination घटाती है। / Nuclease-free tubes and tips protect DNA from breakdown. Sterility reduces sample contamination.

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