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Class 11 Biotechnology - Processes Of Recombinant Dna Technology - Cutting of DNA Easy Quiz

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Restriction enzyme digestion में enzyme stock को contaminate होने से बचाना क्यों जरूरी है?

Why is it important to prevent contamination of enzyme stock in restriction enzyme digestion?

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A. क्योंकि contaminated stock कई reactions खराब कर सकता हैBecause contaminated stock can spoil many reactions

Explanation

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Restriction enzyme stock कई experiments में use होता है। Clean sterile tips और quick handling जरूरी हैं। / Restriction enzyme stock is used in many experiments. Clean sterile tips and quick handling are necessary.

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Restriction enzyme aliquot बनाने का practical लाभ क्या है?

What is the practical benefit of making restriction enzyme aliquots?

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B. repeated freeze-thaw और contamination risk घटानाTo reduce repeated freeze-thaw and contamination risk

Explanation

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Aliquots main stock को बार-बार thaw करने से बचाते हैं। इससे enzyme stability और cleanliness बनी रहती है। / Aliquots avoid repeated thawing of main stock. This preserves enzyme stability and cleanliness.

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Restriction enzyme को glycerol storage buffer में रखने का उद्देश्य क्या है?

What is the purpose of keeping restriction enzyme in glycerol storage buffer?

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C. freezing damage से enzyme को बचानाTo protect enzyme from freezing damage

Explanation

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Glycerol enzyme को freezer में liquid-like और stable रखने में मदद करता है। Reaction में glycerol बहुत अधिक नहीं होना चाहिए। / Glycerol helps keep enzyme liquid-like and stable in freezer. Glycerol should not be too high in reaction.

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Restriction reaction में glycerol concentration बहुत अधिक होने से क्या risk है?

What is the risk of very high glycerol concentration in restriction reaction?

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D. star activity बढ़ सकती हैStar activity can increase

Explanation

Simple Explanation

High glycerol enzyme specificity को प्रभावित कर सकता है। इसलिए enzyme volume recommended limit में रखें। / High glycerol can affect enzyme specificity. Therefore keep enzyme volume within recommended limit.

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Restriction digestion setup में enzyme volume कम लेकिन activity sufficient रखना क्यों जरूरी है?

Why is it important to keep enzyme volume low but activity sufficient in restriction digestion setup?

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A. glycerol कम रखते हुए complete digestion पाने के लिएTo get complete digestion while keeping glycerol low

Explanation

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Sufficient units complete digestion देते हैं। Low enzyme volume star activity risk घटा सकता है। / Sufficient units give complete digestion. Low enzyme volume can reduce star activity risk.

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Restriction enzyme unit reaction planning में कैसे उपयोगी है?

How is restriction enzyme unit useful in reaction planning?

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B. enzyme activity amount estimate करने मेंIn estimating enzyme activity amount

Explanation

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Units enzyme activity को standard way में बताते हैं। DNA amount के अनुसार units चुने जाते हैं। / Units describe enzyme activity in a standard way. Units are chosen according to DNA amount.

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Restriction enzyme lot बदलने पर control digest क्यों useful है?

Why is control digest useful when restriction enzyme lot changes?

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C. new lot की activity verify करने के लिएTo verify activity of the new lot

Explanation

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New lot की performance verify करने से reliable results मिलते हैं। Known substrate control अच्छा तरीका है। / Verifying performance of a new lot gives reliable results. Known substrate control is a good method.

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Expired restriction enzyme use करने से क्या समस्या हो सकती है?

What problem can occur by using an expired restriction enzyme?

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B. enzyme activity घट चुकी हो सकती हैEnzyme activity may be reduced

Explanation

Simple Explanation

Expired enzyme partial या failed digestion दे सकता है। Storage और expiry details check करें। / Expired enzyme can give partial or failed digestion. Check storage and expiry details.

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Restriction enzyme के repeated warming से क्या असर हो सकता है?

What can be the effect of repeated warming of a restriction enzyme?

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A. enzyme stability घट सकती हैEnzyme stability can decrease

Explanation

Simple Explanation

Restriction enzymes proteins हैं और heat sensitive हो सकते हैं। उन्हें ice पर रखें और जल्दी freezer में वापस रखें। / Restriction enzymes are proteins and can be heat sensitive. Keep them on ice and return quickly to freezer.

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Restriction digestion में enzyme को pipette करते समय tip को stock में बार-बार क्यों नहीं डालना चाहिए?

Why should the tip not be inserted repeatedly into enzyme stock during restriction digestion?

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C. contamination risk घटाने के लिएTo reduce contamination risk

Explanation

Simple Explanation

Repeated entry contamination और enzyme loss का risk बढ़ाती है। Fresh sterile tip और careful pipetting use करें। / Repeated entry increases risk of contamination and enzyme loss. Use fresh sterile tip and careful pipetting.

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Restriction digestion में buffer thaw होने के बाद precipitate दिखे तो क्या करना चाहिए?

What should be done if precipitate appears in buffer after thawing in restriction digestion?

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D. manufacturer instruction के अनुसार mix या warm करेंMix or warm according to manufacturer instruction

Explanation

Simple Explanation

Buffer precipitate salt imbalance दिखा सकता है। Correct buffer condition enzyme activity के लिए जरूरी है। / Buffer precipitate can indicate salt imbalance. Correct buffer condition is needed for enzyme activity.

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Restriction digestion में buffer को well mixed करना क्यों जरूरी है?

Why is it necessary to mix buffer well in restriction digestion?

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A. salt और cofactors समान concentration में रहेंTo keep salt and cofactors at uniform concentration

Explanation

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Buffer components uneven हों तो enzyme activity प्रभावित हो सकती है। Gentle mixing reaction reliability बढ़ाता है। / If buffer components are uneven enzyme activity can be affected. Gentle mixing increases reaction reliability.

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Restriction digestion reaction में final buffer concentration आमतौर पर कैसी रखी जाती है?

How is final buffer concentration usually kept in restriction digestion reaction?

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B. manufacturer recommended working concentration

Explanation

Simple Explanation

Recommended working buffer concentration enzyme activity के लिए optimized होती है। बहुत dilute या concentrated buffer result खराब कर सकता है। / Recommended working buffer concentration is optimized for enzyme activity. Too dilute or too concentrated buffer can spoil result.

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Restriction enzyme के साथ incompatible buffer use करने से क्या हो सकता है?

What can happen by using incompatible buffer with restriction enzyme?

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C. enzyme activity घट सकती हैEnzyme activity can decrease

Explanation

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गलत buffer pH salt या cofactor mismatch दे सकता है। इससे partial digestion या no digestion हो सकता है। / Wrong buffer can cause pH salt or cofactor mismatch. This may lead to partial or no digestion.

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Restriction digestion में two-enzyme compatibility table क्यों देखी जाती है?

Why is a two-enzyme compatibility table checked in restriction digestion?

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A. दोनों enzymes एक buffer में कितने active हैं जानने के लिएTo know how active both enzymes are in one buffer

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Double digest में दोनों enzymes को suitable condition चाहिए। Compatibility table one-pot या sequential plan तय करती है। / Both enzymes need suitable conditions in double digest. Compatibility table decides one-pot or sequential plan.

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अगर double digest के enzymes incompatible buffers मांगते हैं तो कौन सा तरीका उपयोगी है?

If enzymes in double digest need incompatible buffers which method is useful?

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A. sequential digestion

Explanation

Simple Explanation

Sequential digestion में enzymes अलग-अलग conditions में use होते हैं। इससे दोनों enzymes को उचित environment मिलता है। / In sequential digestion enzymes are used under separate conditions. This gives both enzymes suitable environment.

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Sequential digestion में पहले enzyme के बाद cleanup कब जरूरी हो सकता है?

When can cleanup after the first enzyme be necessary in sequential digestion?

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A. जब दूसरा buffer पहले से incompatible होWhen second buffer is incompatible with first

Explanation

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पहले reaction के salts या enzyme दूसरे reaction को affect कर सकते हैं। Cleanup या buffer exchange helpful हो सकता है। / Salts or enzyme from first reaction can affect the second reaction. Cleanup or buffer exchange can help.

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Double digest में यदि एक enzyme heat-inactivated नहीं होता तो क्या किया जा सकता है?

What can be done if one enzyme in double digest is not heat-inactivated?

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A. cleanup या enzyme removal step use करेंUse cleanup or enzyme removal step

Explanation

Simple Explanation

Non-inactivated enzyme next step में activity रख सकता है। Cleanup unwanted cutting रोकने में मदद करता है। / A non-inactivated enzyme can remain active in next step. Cleanup helps stop unwanted cutting.

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Restriction digestion में enzyme carryover ligation में क्यों risk है?

Why is enzyme carryover risky in ligation after restriction digestion?

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A. ligated DNA को फिर cut कर सकता हैIt can cut ligated DNA again

Explanation

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Active restriction enzyme newly ligated DNA को काट सकता है। इसलिए inactivation या purification use करें। / Active restriction enzyme can cut newly ligated DNA. Therefore use inactivation or purification.

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Restriction digestion के बाद agarose gel से fragment निकालते समय low-melt agarose कब useful हो सकता है?

When can low-melt agarose be useful while extracting fragment after restriction digestion?

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A. sensitive DNA recovery मेंIn sensitive DNA recovery

Explanation

Simple Explanation

Low-melt agarose DNA recovery को आसान और gentle बना सकता है। यह cloning fragments के लिए useful हो सकता है। / Low-melt agarose can make DNA recovery easier and gentler. It can be useful for cloning fragments.

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Restriction fragment gel extraction में gel slice को छोटा रखना क्यों अच्छा है?

Why is it good to keep gel slice small in restriction fragment gel extraction?

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A. binding capacity और impurity load बेहतर रहता हैBinding capacity and impurity load remain better

Explanation

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छोटा gel slice purification को efficient बनाता है। जरूरत से ज्यादा agarose recovery घटा सकता है। / A small gel slice makes purification efficient. Excess agarose can reduce recovery.

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Gel extraction में band cut करते समय scalpel clean क्यों होना चाहिए?

Why should the scalpel be clean while cutting band in gel extraction?

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A. DNA contamination रोकने के लिएTo prevent DNA contamination

Explanation

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Dirty scalpel unwanted DNA या nuclease ला सकता है। Clean tool fragment purity बचाता है। / A dirty scalpel can introduce unwanted DNA or nuclease. A clean tool protects fragment purity.

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Restriction fragment recovery में UV exposure को कम क्यों रखा जाता है?

Why is UV exposure minimized during restriction fragment recovery?

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A. DNA damage कम करने के लिएTo reduce DNA damage

Explanation

Simple Explanation

UV DNA में damage कर सकता है और cloning efficiency घटा सकता है। Band जल्दी excise करें। / UV can damage DNA and reduce cloning efficiency. Excise the band quickly.

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Blue-light compatible stain का cloning fragment recovery में लाभ क्या है?

What is the benefit of blue-light compatible stain in cloning fragment recovery?

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A. UV damage risk घट सकता हैUV damage risk can decrease

Explanation

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Blue light UV की तुलना में DNA damage कम कर सकता है। यह downstream cloning के लिए helpful है। / Blue light can reduce DNA damage compared with UV. It is helpful for downstream cloning.

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Restriction digest के बाद desired fragment gel से निकालने से पहले band identity कैसे confirm करें?

How should band identity be confirmed before extracting desired fragment from gel after restriction digest?

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A. ladder और expected map से compare करकेBy comparing with ladder and expected map

Explanation

Simple Explanation

Band size expected fragment से match होना चाहिए। गलत band purification cloning को fail कर सकती है। / Band size should match expected fragment. Purifying a wrong band can fail cloning.

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Restriction fragment purification के बाद elution volume कम रखने से क्या फायदा हो सकता है?

What can be the benefit of low elution volume after restriction fragment purification?

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A. DNA concentration बढ़ सकती हैDNA concentration can increase

Explanation

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कम volume में recovered DNA अधिक concentrated होता है। लेकिन बहुत कम volume recovery घटा सकता है। / Recovered DNA is more concentrated in low volume. But too low volume can reduce recovery.

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Purified restriction fragment को ligation से पहले quantify क्यों करते हैं?

Why is purified restriction fragment quantified before ligation?

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A. insert-vector ratio सही रखने के लिएTo keep insert-vector ratio correct

Explanation

Simple Explanation

Ligation setup में fragment amount और molar ratio important हैं। Quantification cloning efficiency सुधारती है। / Fragment amount and molar ratio are important in ligation setup. Quantification improves cloning efficiency.

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Restriction digestion product में small primer-like fragments क्यों problematic हो सकते हैं?

Why can small primer-like fragments be problematic in restriction digestion product?

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A. वे ligation में unwanted competition कर सकते हैंThey can cause unwanted competition in ligation

Explanation

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छोटे DNA pieces compatible ends लेकर ligation reaction disturb कर सकते हैं। Cleanup इन्हें हटाने में मदद करता है। / Small DNA pieces with compatible ends can disturb ligation. Cleanup helps remove them.

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Restriction digestion product में salts बचने से ligation पर क्या असर हो सकता है?

What effect can remaining salts in restriction digestion product have on ligation?

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A. ligation efficiency घट सकती हैLigation efficiency can decrease

Explanation

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Excess salts ligase और DNA end interaction को affect कर सकते हैं। Purification और wash step जरूरी हैं। / Excess salts can affect ligase and DNA end interaction. Purification and wash step are necessary.

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Restriction digestion product में residual ethanol ligation को कैसे प्रभावित कर सकता है?

How can residual ethanol affect ligation in restriction digestion product?

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A. ligase activity inhibit कर सकता हैIt can inhibit ligase activity

Explanation

Simple Explanation

Residual ethanol downstream enzyme reactions को रोक सकता है। DNA pellet या column membrane को dry करें। / Residual ethanol can inhibit downstream enzyme reactions. Dry the DNA pellet or column membrane.

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Restriction digestion के बाद DNA ends को damage होने से कैसे बचाया जा सकता है?

How can DNA ends be protected from damage after restriction digestion?

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A. gentle handling और nuclease-free condition सेBy gentle handling and nuclease-free condition

Explanation

Simple Explanation

DNA ends ligation के लिए important हैं। Rough handling contamination और UV damage से बचें। / DNA ends are important for ligation. Avoid rough handling contamination and UV damage.

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Restriction cut insert को long-term store करना हो तो क्या ध्यान रखें?

What should be considered if restriction-cut insert must be stored long-term?

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A. low temperature और nuclease-free bufferLow temperature and nuclease-free buffer

Explanation

Simple Explanation

Low temperature DNA stability बढ़ाता है। Label और aliquot भी useful हैं। / Low temperature increases DNA stability. Label and aliquot are also useful.

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Restriction digestion product को बार-बार freeze-thaw करने से क्या risk है?

What is the risk of repeated freeze-thaw of restriction digestion product?

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A. DNA quality या ends प्रभावित हो सकते हैंDNA quality or ends can be affected

Explanation

Simple Explanation

Repeated freeze-thaw DNA integrity को कम कर सकता है। Aliquots बनाकर store करें। / Repeated freeze-thaw can reduce DNA integrity. Store by making aliquots.

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Restriction digestion product labeling में क्या जरूर लिखना चाहिए?

What should be written in restriction digestion product labeling?

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A. enzyme name fragment identity और dateEnzyme name fragment identity and date

Explanation

Simple Explanation

Proper label future ligation और troubleshooting में मदद करता है। बिना label sample mix-up हो सकता है। / Proper label helps future ligation and troubleshooting. Without label sample mix-up can occur.

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Restriction digestion product का storage label क्यों जरूरी है?

Why is storage label of restriction digestion product necessary?

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A. sample identity और enzyme history track करने के लिएTo track sample identity and enzyme history

Explanation

Simple Explanation

Label से पता चलता है fragment किस enzyme से बना है। यह later cloning decision में useful है। / The label shows which enzyme produced the fragment. This is useful in later cloning decisions.

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Restriction digestion में chain-of-sample record कब useful है?

When is chain-of-sample record useful in restriction digestion?

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A. multiple samples और clones handle करते समयWhile handling multiple samples and clones

Explanation

Simple Explanation

कई samples में mix-up risk बढ़ता है। Tracking record correct identity बनाए रखता है। / Mix-up risk increases with many samples. Tracking record maintains correct identity.

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Restriction digestion experiment में negative result को छिपाना क्यों गलत है?

Why is hiding a negative result in restriction digestion experiment wrong?

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A. यह scientific honesty के खिलाफ हैIt is against scientific honesty

Explanation

Simple Explanation

Negative result troubleshooting के लिए useful होता है। सही reporting responsible science का भाग है। / A negative result is useful for troubleshooting. Correct reporting is part of responsible science.

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Restriction digestion में failed reaction को repeat करते समय क्या बदलना चाहिए?

What should be changed while repeating a failed restriction digestion?

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A. suspected variable जैसे buffer enzyme amount या DNA puritySuspected variable such as buffer enzyme amount or DNA purity

Explanation

Simple Explanation

Troubleshooting में एक या सीमित variables बदलना बेहतर है। इससे cause समझ आता है। / It is better to change one or limited variables in troubleshooting. This helps identify the cause.

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Restriction digestion repeat में same mistake रोकने के लिए क्या उपयोगी है?

What is useful to prevent the same mistake in repeat restriction digestion?

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A. detailed notes और checklistDetailed notes and checklist

Explanation

Simple Explanation

Checklist enzyme buffer time और temperature errors घटाती है। Notes repeat work को reliable बनाते हैं। / A checklist reduces enzyme buffer time and temperature errors. Notes make repeat work reliable.

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Restriction digestion में checklist का एक item क्या होना चाहिए?

What should be one item in a restriction digestion checklist?

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A. enzyme name और buffer compatibilityEnzyme name and buffer compatibility

Explanation

Simple Explanation

Enzyme-buffer match reaction success के लिए essential है। Checklist इसे miss होने से बचाती है। / Enzyme-buffer match is essential for reaction success. Checklist prevents missing it.

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Restriction digestion में wrong enzyme thaw कर लेने से बचने का तरीका क्या है?

What is a way to avoid thawing the wrong enzyme in restriction digestion?

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A. reaction plan और labels पहले verify करेंVerify reaction plan and labels first

Explanation

Simple Explanation

Exact enzyme name पहले confirm करना चाहिए। Similar names cloning result बदल सकते हैं। / Exact enzyme name should be confirmed first. Similar names can change cloning result.

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EcoRI और EcoRV जैसे names में confusion क्यों हो सकती है?

Why can confusion occur in names like EcoRI and EcoRV?

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A. names similar हैं पर enzymes अलग हैंNames are similar but enzymes are different

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Similar-looking enzyme names अलग recognition और end type दे सकते हैं। Exact spelling जरूरी है। / Similar-looking enzyme names can give different recognition and end types. Exact spelling is necessary.

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Restriction enzyme name में spelling error का क्या असर हो सकता है?

What can be the effect of spelling error in restriction enzyme name?

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A. wrong digestion plan बन सकता हैWrong digestion plan can form

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Wrong enzyme selection compatible ends और fragment pattern बदल सकता है। Documentation में exact name लिखें। / Wrong enzyme selection can change compatible ends and fragment pattern. Write exact name in documentation.

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Restriction digestion protocol में incubation start time लिखना क्यों useful है?

Why is writing incubation start time useful in restriction digestion protocol?

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A. actual reaction duration track करने के लिएTo track actual reaction duration

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Time record incomplete या overdigestion की troubleshooting में मदद करता है। यह reproducibility बढ़ाता है। / Time record helps troubleshoot incomplete or overdigestion. It increases reproducibility.

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Restriction digestion में reaction end time क्यों note करना चाहिए?

Why should reaction end time be noted in restriction digestion?

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A. digestion duration verify करने के लिएTo verify digestion duration

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End time actual incubation length बताता है। यह partial digest या star activity analysis में useful है। / End time tells actual incubation length. It is useful in partial digest or star activity analysis.

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Restriction digestion में temperature log क्यों रखना helpful है?

Why is keeping a temperature log helpful in restriction digestion?

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A. incubator temperature सही था या नहीं जानने के लिएTo know whether incubator temperature was correct

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Temperature deviation enzyme activity बदल सकती है। Log troubleshooting और quality assurance में मदद करता है। / Temperature deviation can change enzyme activity. A log helps troubleshooting and quality assurance.

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Restriction enzyme reaction में water bath और heat block दोनों का goal क्या है?

What is the goal of both water bath and heat block in restriction enzyme reaction?

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A. stable incubation temperature देनाProviding stable incubation temperature

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Stable temperature restriction enzyme activity के लिए जरूरी है। Device का चुनाव lab setup पर निर्भर है। / Stable temperature is needed for restriction enzyme activity. Device choice depends on lab setup.

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Restriction digestion में reaction tubes floating होने से क्या problem हो सकती है?

What problem can occur if reaction tubes float during restriction digestion?

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A. temperature exposure uneven हो सकती हैTemperature exposure can be uneven

Explanation

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Uneven temperature digestion efficiency को प्रभावित कर सकती है। Tubes को properly incubate करें। / Uneven temperature can affect digestion efficiency. Incubate tubes properly.

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Level 55 का best revision point क्या है?

What is the best revision point of Level 55?

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A. enzyme handling buffer compatibility purification और record keeping याद रखेंRemember enzyme handling buffer compatibility purification and record keeping

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इस level में practical accuracy पर focus है। Enzyme storage cleanup timing और labels result को reliable बनाते हैं। / This level focuses on practical accuracy. Enzyme storage cleanup timing and labels make results reliable.

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Cutting of DNA level 55 का final summary क्या है?

What is the final summary of Cutting of DNA level 55?

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A. careful enzyme handling और clean purified fragments ligation success बढ़ाते हैंCareful enzyme handling and clean purified fragments improve ligation success

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Restriction cutting केवल enzyme डालना नहीं है। Storage buffer cleanup quantification और documentation सभी important हैं। / Restriction cutting is not just adding enzyme. Storage buffer cleanup quantification and documentation are all important.

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Class 11 Biotechnology Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 50 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 40 seconds per question for Easy difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.