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downstream use MCQ Questions for Class 11

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4 questions tagged with downstream use.

Question 1/4 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 44

Pure DNA extract का मुख्य गुण क्या है?

What is the main feature of a pure DNA extract?

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Correct Answer

C. low contaminant level and usable DNA

Step 1

Concept

Pure DNA is better for downstream reactions like PCR and cloning. Purity ratios and gel check help.

Step 2

Why this answer is correct

The correct answer is C. low contaminant level and usable DNA. Pure DNA is better for downstream reactions like PCR and cloning. Purity ratios and gel check help.

Step 3

Exam Tip

Pure DNA downstream reactions जैसे PCR और cloning के लिए बेहतर होता है। Purity ratios और gel check मदद करते हैं।

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Question 2/4 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA isolation के बाद storage buffer चुनते समय क्या ध्यान रखना चाहिए?

What should be considered while choosing storage buffer after DNA isolation?

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Correct Answer

A. DNA stability और downstream useDNA stability and downstream use

Step 1

Concept

TE buffer gives DNA stability but EDTA can affect some enzyme reactions. Choose buffer according to downstream use.

Step 2

Why this answer is correct

The correct answer is A. DNA stability और downstream use / DNA stability and downstream use. TE buffer gives DNA stability but EDTA can affect some enzyme reactions. Choose buffer according to downstream use.

Step 3

Exam Tip

TE buffer DNA stability देता है पर EDTA कुछ enzyme reactions में affect कर सकता है। Downstream use के अनुसार buffer चुनें।

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Question 3/4 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 43

DNA cleanup का मुख्य उद्देश्य क्या है?

What is the main purpose of DNA cleanup?

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Correct Answer

D. inhibitors और impurities हटानाRemoving inhibitors and impurities

Step 1

Concept

Cleanup helps remove residual impurities such as salts phenol protein or ethanol. This can improve PCR and digestion.

Step 2

Why this answer is correct

The correct answer is D. inhibitors और impurities हटाना / Removing inhibitors and impurities. Cleanup helps remove residual impurities such as salts phenol protein or ethanol. This can improve PCR and digestion.

Step 3

Exam Tip

Cleanup residual salts phenol protein या ethanol जैसी impurities हटाने में मदद करता है। इससे PCR और digestion बेहतर हो सकते हैं।

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Question 4/4 Easy Biotechnology Processes of Recombinant DNA Technology Isolation of DNA Class 11 Level 41

DNA isolation का final product कैसा होना चाहिए?

What should the final product of DNA isolation be like?

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Correct Answer

A. usable pure और stable DNAUsable pure and stable DNA

Step 1

Concept

Final DNA should have enough amount and quality for downstream experiments. Purity integrity and storage are important.

Step 2

Why this answer is correct

The correct answer is A. usable pure और stable DNA / Usable pure and stable DNA. Final DNA should have enough amount and quality for downstream experiments. Purity integrity and storage are important.

Step 3

Exam Tip

अंतिम DNA downstream प्रयोगों के लिए पर्याप्त मात्रा और quality में होना चाहिए। Purity integrity और storage important हैं।

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