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Class 11 Biotechnology Easy Quiz

Level 52 • 50/50 questions • 40 seconds per question.

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Restriction digestion में quality control का मुख्य लक्ष्य क्या है?

What is the main goal of quality control in restriction digestion?

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A. cutting result reliable है या नहीं देखनाTo check whether cutting result is reliable

Explanation

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Quality control से digestion success और errors समझ आते हैं। Controls और expected bands इसमें मदद करते हैं। / Quality control helps understand digestion success and errors. Controls and expected bands help in this.

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Restriction digestion में expected pattern कहाँ से मिलता है?

From where is the expected pattern obtained in restriction digestion?

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A. restriction map या sequence analysis सेFrom restriction map or sequence analysis

Explanation

Simple Explanation

Restriction map cut sites और fragment sizes बताता है। Expected pattern इसी से बनता है। / A restriction map shows cut sites and fragment sizes. The expected pattern is made from it.

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Observed pattern किससे मिलता है?

From what is the observed pattern obtained?

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A. gel electrophoresis result सेFrom gel electrophoresis result

Explanation

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Observed bands gel पर दिखाई देते हैं। इन्हें expected pattern से compare किया जाता है। / Observed bands are seen on the gel. They are compared with expected pattern.

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Expected और observed patterns match हों तो क्या संकेत है?

What does it indicate if expected and observed patterns match?

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A. digestion या clone सही हो सकता हैDigestion or clone may be correct

Explanation

Simple Explanation

Matching bands correct digestion का support देते हैं। Final sequence confirmation के लिए sequencing बेहतर हो सकती है। / Matching bands support correct digestion. Sequencing can be better for final sequence confirmation.

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Restriction digest से exact DNA sequence क्यों नहीं पता चलती?

Why does restriction digest not reveal exact DNA sequence?

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A. यह केवल fragment size pattern देता हैIt gives only fragment size pattern

Explanation

Simple Explanation

Restriction digest size information देता है। Exact bases जानने के लिए sequencing चाहिए। / Restriction digest gives size information. Sequencing is needed to know exact bases.

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Sequencing restriction digest के बाद क्यों useful हो सकती है?

Why can sequencing be useful after restriction digest?

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A. exact insert sequence confirm करने के लिएTo confirm exact insert sequence

Explanation

Simple Explanation

Digest correct size दिखा सकता है लेकिन mutation नहीं बता सकता। Sequencing final confirmation देती है। / Digest can show correct size but cannot reveal mutation. Sequencing gives final confirmation.

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Diagnostic digest में false positive कब मिल सकता है?

When can a false positive occur in diagnostic digest?

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A. जब similar band pattern wrong construct से भी मिलेWhen a similar band pattern also comes from a wrong construct

Explanation

Simple Explanation

कभी wrong construct भी similar size bands दे सकता है। इसलिए informative enzymes और sequencing useful हैं। / Sometimes a wrong construct can also give similar size bands. Therefore informative enzymes and sequencing are useful.

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Informative enzyme selection का मतलब क्या है?

What does informative enzyme selection mean?

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A. ऐसे enzymes चुनना जो correct और wrong construct में फर्क दिखाएँChoosing enzymes that distinguish correct and wrong construct

Explanation

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Informative digestion अलग expected outcomes देता है। इससे clone verification मजबूत होती है। / Informative digestion gives different expected outcomes. This makes clone verification stronger.

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Single enzyme diagnostic digest की limitation क्या है?

What is a limitation of single enzyme diagnostic digest?

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A. यह orientation की जानकारी हमेशा नहीं देताIt does not always give orientation information

Explanation

Simple Explanation

Single enzyme कभी केवल plasmid size या linearization दिखाता है। Orientation के लिए additional sites चाहिए। / A single enzyme may only show plasmid size or linearization. Additional sites are needed for orientation.

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Two enzyme diagnostic digest orientation में क्यों मदद कर सकता है?

Why can a two-enzyme diagnostic digest help in orientation?

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A. different orientation में different fragment sizes मिल सकते हैंDifferent orientations can give different fragment sizes

Explanation

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दो sites की relative position orientation के साथ बदलती है। इसलिए band pattern informative हो सकता है। / Relative positions of two sites change with orientation. Therefore band pattern can be informative.

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Restriction digest में uncut plasmid lane क्यों रखना उपयोगी है?

Why is keeping an uncut plasmid lane useful in restriction digest?

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A. plasmid conformations और cut result compare करने के लिएTo compare plasmid conformations and cut result

Explanation

Simple Explanation

Uncut plasmid supercoiled और open circular forms दिखा सकता है। Cut sample से comparison digestion समझाता है। / Uncut plasmid can show supercoiled and open circular forms. Comparison with cut sample explains digestion.

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Supercoiled plasmid का apparent size gel पर क्यों misleading हो सकता है?

Why can apparent size of supercoiled plasmid be misleading on gel?

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A. compact conformation faster migrate कर सकती हैCompact conformation can migrate faster

Explanation

Simple Explanation

Supercoiled form linear DNA से अलग mobility रखता है। Size estimate के लिए linearized plasmid बेहतर है। / Supercoiled form has different mobility than linear DNA. Linearized plasmid is better for size estimate.

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Linearized plasmid size estimation में क्यों बेहतर हो सकता है?

Why can linearized plasmid be better for size estimation?

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A. linear DNA ladder से अधिक comparable होता हैIt is more comparable with linear DNA ladder

Explanation

Simple Explanation

DNA ladder linear fragments से बनी होती है। Linearized plasmid का comparison अधिक सही होता है। / DNA ladder is made of linear fragments. Comparison of linearized plasmid is more accurate.

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Open circular plasmid band का क्या कारण हो सकता है?

What can cause an open circular plasmid band?

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A. single strand nick या relaxed plasmid formSingle strand nick or relaxed plasmid form

Explanation

Simple Explanation

Nick होने पर supercoiled plasmid open circular बन सकता है। यह uncut lane में दिख सकता है। / A nick can make supercoiled plasmid open circular. This can appear in uncut lane.

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Restriction digest में nicked plasmid क्यों confusion दे सकता है?

Why can a nicked plasmid create confusion in restriction digest?

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A. वह अलग mobility दिखाकर extra band जैसा लग सकता हैIt can show different mobility and look like an extra band

Explanation

Simple Explanation

Plasmid conformation अलग bands दे सकती है। इसलिए uncut control interpretation में मदद करता है। / Plasmid conformation can give different bands. Therefore uncut control helps interpretation.

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Complete digestion की confirmation कैसे हो सकती है?

How can complete digestion be confirmed?

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A. expected bands और uncut band की absence देखकरBy seeing expected bands and absence of uncut band

Explanation

Simple Explanation

Complete digest में expected cut fragments दिखते हैं। Uncut band नहीं रहना चाहिए। / In complete digest expected cut fragments appear. Uncut band should not remain.

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Partial digestion gel पर कैसे दिख सकती है?

How can partial digestion appear on gel?

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A. expected bands के साथ uncut या larger intermediate bandsUncut or larger intermediate bands with expected bands

Explanation

Simple Explanation

Partial digestion में कुछ molecules fully cut नहीं होते। इसलिए intermediate bands आ सकते हैं। / In partial digestion some molecules are not fully cut. Therefore intermediate bands can appear.

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Partial digest को सुधारने के लिए क्या किया जा सकता है?

What can be done to improve a partial digest?

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A. enzyme amount time और buffer condition optimize करनाOptimize enzyme amount time and buffer condition

Explanation

Simple Explanation

Partial digestion अक्सर insufficient enzyme time या wrong condition से होती है। Recommended conditions follow करें। / Partial digestion often occurs due to insufficient enzyme time or wrong condition. Follow recommended conditions.

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Star activity के gel pattern में क्या दिख सकता है?

What can appear in gel pattern due to star activity?

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A. unexpected extra fragments

Explanation

Simple Explanation

Star activity non-specific cutting दे सकती है। Gel पर extra unexpected bands दिख सकते हैं। / Star activity can give non-specific cutting. Extra unexpected bands can appear on gel.

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Star activity कम करने में कौन सा कदम helpful है?

Which step helps reduce star activity?

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A. recommended buffer और limited enzyme volumeRecommended buffer and limited enzyme volume

Explanation

Simple Explanation

Correct buffer enzyme specificity बनाए रखता है। Excess enzyme और glycerol avoid करें। / Correct buffer maintains enzyme specificity. Avoid excess enzyme and glycerol.

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Restriction digestion में methylation block को कैसे identify किया जा सकता है?

How can methylation block be identified in restriction digestion?

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A. methylation-sensitive और insensitive enzymes compare करकेBy comparing methylation-sensitive and insensitive enzymes

Explanation

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अगर methylation-sensitive enzyme cut न करे तो methylation cause हो सकता है। Alternative enzyme या host source मदद कर सकता है। / If a methylation-sensitive enzyme does not cut methylation can be a cause. Alternative enzyme or host source can help.

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Dam methylation किस base से जुड़ी होती है?

Dam methylation is related to which base?

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A. adenine methylation in certain bacterial sites

Explanation

Simple Explanation

Dam methylation bacterial DNA में adenine modification से जुड़ी है। यह कुछ enzyme cutting को प्रभावित कर सकती है। / Dam methylation is linked with adenine modification in bacterial DNA. It can affect cutting by some enzymes.

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Dcm methylation किससे संबंधित है?

Dcm methylation is related to what?

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A. cytosine methylation in certain bacterial sequences

Explanation

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Dcm methylation bacterial DNA में cytosine modification से जुड़ी है। कुछ restriction enzymes इससे प्रभावित हो सकते हैं। / Dcm methylation is linked with cytosine modification in bacterial DNA. Some restriction enzymes can be affected by it.

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Methylation problem से बचने के लिए DNA कहाँ से prepare किया जा सकता है?

From where can DNA be prepared to avoid methylation problem?

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A. suitable methylation-deficient host strain सेFrom a suitable methylation-deficient host strain

Explanation

Simple Explanation

Methylation-deficient host कुछ sensitive enzymes के लिए DNA suitable बना सकता है। Enzyme requirement पहले check करें। / A methylation-deficient host can make DNA suitable for some sensitive enzymes. Check enzyme requirements first.

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Restriction enzyme reaction में EDTA अधिक हो तो क्या होगा?

What happens if EDTA is high in restriction enzyme reaction?

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A. magnesium chelation से enzyme activity घट सकती हैEnzyme activity can decrease due to magnesium chelation

Explanation

Simple Explanation

EDTA magnesium ions bind करता है। कई restriction enzymes magnesium dependent होते हैं। / EDTA binds magnesium ions. Many restriction enzymes are magnesium dependent.

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TE buffer में stored DNA restriction digest में कब issue दे सकता है?

When can DNA stored in TE buffer cause an issue in restriction digest?

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A. अगर EDTA concentration reaction में बहुत अधिक होIf EDTA concentration is too high in reaction

Explanation

Simple Explanation

TE buffer का EDTA magnesium chelate कर सकता है। Reaction buffer के अनुसार dilution या cleanup करें। / EDTA in TE buffer can chelate magnesium. Dilute or cleanup according to reaction buffer.

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Restriction digest में phenol carryover का क्या असर हो सकता है?

What can be the effect of phenol carryover in restriction digest?

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A. enzyme inhibition

Explanation

Simple Explanation

Phenol enzyme proteins को affect कर सकता है। Clean DNA digestion के लिए जरूरी है। / Phenol can affect enzyme proteins. Clean DNA is necessary for digestion.

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Restriction digest में ethanol carryover कैसे पता चल सकता है?

How can ethanol carryover be suspected in restriction digest?

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A. poor enzyme reaction और wet DNA pellet history सेFrom poor enzyme reaction and wet DNA pellet history

Explanation

Simple Explanation

Residual ethanol enzyme reaction inhibit कर सकता है। Pellet proper dry होना चाहिए। / Residual ethanol can inhibit enzyme reaction. Pellet should be properly dried.

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Restriction digestion से पहले DNA cleanup कब helpful है?

When is DNA cleanup helpful before restriction digestion?

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A. जब sample में salts phenol या ethanol contamination होWhen sample has salts phenol or ethanol contamination

Explanation

Simple Explanation

Contaminants enzyme activity को रोक सकते हैं। Cleanup digestion efficiency सुधार सकता है। / Contaminants can block enzyme activity. Cleanup can improve digestion efficiency.

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Restriction digestion में sample concentration normalize क्यों करते हैं?

Why is sample concentration normalized in restriction digestion?

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A. different reactions में equal DNA amount रखने के लिएTo keep equal DNA amount in different reactions

Explanation

Simple Explanation

Equal DNA amount comparison को fair बनाता है। इससे gel band intensity interpretation बेहतर होती है। / Equal DNA amount makes comparison fair. This improves interpretation of gel band intensity.

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Restriction digest में pipetting accuracy क्यों critical है?

Why is pipetting accuracy critical in restriction digest?

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A. small volume में concentration बदल सकती हैConcentration can change in small volume

Explanation

Simple Explanation

Reaction में enzyme buffer और DNA सही मात्रा में होने चाहिए। Pipetting error digestion result बदल सकता है। / The reaction needs correct amounts of enzyme buffer and DNA. Pipetting error can change digestion result.

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Restriction digest में reaction volume बड़ा करने का एक benefit क्या हो सकता है?

What is one benefit of increasing reaction volume in restriction digest?

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A. pipetting error का relative effect घट सकता हैRelative effect of pipetting error can decrease

Explanation

Simple Explanation

बहुत छोटे volumes में errors अधिक प्रभाव डालते हैं। उचित volume accuracy में मदद करता है। / Errors have larger effect in very small volumes. Suitable volume helps accuracy.

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Restriction digest incubation में tube cap tight क्यों होना चाहिए?

Why should tube cap be tight during restriction digest incubation?

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A. evaporation रोकने के लिएTo prevent evaporation

Explanation

Simple Explanation

Evaporation reaction concentration बदल सकती है। Tight cap reaction condition स्थिर रखती है। / Evaporation can change reaction concentration. A tight cap keeps reaction condition stable.

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Restriction digest में spin-down का practical purpose क्या है?

What is the practical purpose of spin-down in restriction digest?

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A. drops को tube bottom में लानाBringing drops to tube bottom

Explanation

Simple Explanation

Spin-down tube wall पर लगी droplets को नीचे लाता है। इससे reaction complete volume में होती है। / Spin-down brings droplets on tube wall to the bottom. Thus reaction occurs in complete volume.

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Restriction digest mix को briefly centrifuge करने से क्या फायदा है?

What is the benefit of briefly centrifuging restriction digest mix?

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A. components नीचे collect होकर proper reaction देते हैंComponents collect at bottom for proper reaction

Explanation

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Brief spin reaction droplets को bottom में लाता है। इससे mixing और incubation consistent होती है। / A brief spin brings reaction droplets to bottom. This makes mixing and incubation consistent.

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Restriction digest में harsh shaking क्यों avoid करनी चाहिए?

Why should harsh shaking be avoided in restriction digest?

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A. long DNA shearing और enzyme damage risk से बचने के लिएTo avoid long DNA shearing and enzyme damage risk

Explanation

Simple Explanation

Gentle mixing DNA integrity और enzyme activity बचाता है। Harsh handling unnecessary है। / Gentle mixing protects DNA integrity and enzyme activity. Harsh handling is unnecessary.

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Restriction digestion में final reaction को gently tap करने का उद्देश्य क्या है?

What is the purpose of gently tapping the final reaction in restriction digestion?

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A. components को मिलाना without damageMixing components without damage

Explanation

Simple Explanation

Gentle tapping reaction mix को uniform करता है। इससे components ठीक से contact में आते हैं। / Gentle tapping makes reaction mix uniform. This brings components into proper contact.

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Restriction digest में reaction setup on ice कब useful है?

When is reaction setup on ice useful in restriction digest?

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A. enzyme stability और premature activity control के लिएFor enzyme stability and controlling premature activity

Explanation

Simple Explanation

Ice enzyme को stable रखता है। Reaction desired incubation temperature पर शुरू की जाती है। / Ice keeps enzyme stable. The reaction is started at desired incubation temperature.

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Restriction digest reaction में enzyme को repeatedly thaw क्यों नहीं करना चाहिए?

Why should restriction enzyme not be thawed repeatedly?

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A. activity loss का risk बढ़ता हैRisk of activity loss increases

Explanation

Simple Explanation

Repeated freeze-thaw enzyme protein को damage कर सकता है। Aliquot या quick handling useful है। / Repeated freeze-thaw can damage enzyme protein. Aliquot or quick handling is useful.

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Restriction enzyme vial में contamination से क्या समस्या हो सकती है?

What problem can contamination in a restriction enzyme vial cause?

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A. many reactions fail हो सकती हैंMany reactions can fail

Explanation

Simple Explanation

Contaminated enzyme stock multiple experiments खराब कर सकता है। Sterile tips और quick handling जरूरी हैं। / A contaminated enzyme stock can spoil multiple experiments. Sterile tips and quick handling are important.

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Restriction digestion में gel extraction के बाद concentration कम क्यों हो सकती है?

Why can concentration decrease after gel extraction in restriction digestion?

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A. recovery पूरी नहीं होतीRecovery is not complete

Explanation

Simple Explanation

Gel extraction में DNA loss हो सकता है। इसलिए final concentration फिर measure करना चाहिए। / DNA loss can occur in gel extraction. Therefore final concentration should be measured again.

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Gel extraction में silica column use हो तो DNA किससे bind कर सकता है?

If silica column is used in gel extraction what can DNA bind to?

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A. silica membrane

Explanation

Simple Explanation

Suitable salt conditions में DNA silica membrane से bind करता है। Wash के बाद elution की जाती है। / Under suitable salt conditions DNA binds to silica membrane. Washing is followed by elution.

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Gel extraction में agarose melt करना क्यों जरूरी हो सकता है?

Why may agarose melting be necessary in gel extraction?

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A. DNA fragment को gel matrix से release करने के लिएTo release DNA fragment from gel matrix

Explanation

Simple Explanation

Desired band agarose matrix में फंसा होता है। Melting और binding steps DNA recovery में मदद करते हैं। / The desired band is trapped in agarose matrix. Melting and binding steps help DNA recovery.

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Gel extraction में ज्यादा agarose slice लेने से क्या समस्या हो सकती है?

What problem can occur if too much agarose slice is taken in gel extraction?

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A. purification efficiency घट सकती हैPurification efficiency can decrease

Explanation

Simple Explanation

बड़ा gel slice impurities और volume बढ़ाता है। केवल desired band के आसपास का छोटा slice लें। / A large gel slice increases impurities and volume. Take only a small slice around the desired band.

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Gel extraction में close band contamination से क्या होगा?

What happens due to close band contamination in gel extraction?

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A. wrong fragment साथ आ सकता हैWrong fragment can come along

Explanation

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पास की band accidentally cut होने पर unwanted DNA आ सकता है। High resolution separation helpful है। / If a nearby band is accidentally cut unwanted DNA can come. High resolution separation is helpful.

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Restriction digestion experiment में conclusion लिखते समय क्या avoid करना चाहिए?

What should be avoided while writing conclusion of restriction digestion experiment?

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A. बिना control के निश्चित दावा करनाMaking a definite claim without controls

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Controls के बिना result interpretation कमजोर होता है। Scientific conclusion evidence पर आधारित होना चाहिए। / Without controls result interpretation is weak. Scientific conclusion should be based on evidence.

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Restriction digest में ethical data handling का एक नियम क्या है?

What is one rule of ethical data handling in restriction digest?

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A. original gel image सुरक्षित रखेंPreserve original gel image

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Original image और lane map transparency देते हैं। Result को manipulate नहीं करना चाहिए। / Original image and lane map give transparency. Results should not be manipulated.

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Restriction digestion में biosafety record क्यों useful है?

Why is a biosafety record useful in restriction digestion?

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A. used stains chemicals और waste tracking के लिएFor tracking used stains chemicals and waste

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Stains और chemicals का disposal record safety compliance में मदद करता है। Lab safety भी experiment का भाग है। / Disposal record of stains and chemicals helps safety compliance. Lab safety is also part of experiment.

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Level 52 का best revision point क्या है?

What is the best revision point of Level 52?

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A. quality control expected observed bands partial digest star activity और cleanup याद रखेंRemember quality control expected observed bands partial digest star activity and cleanup

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Restriction digestion result को map controls और gel pattern से verify करें। Troubleshooting में DNA quality और enzyme conditions check करें। / Verify restriction digestion result using map controls and gel pattern. In troubleshooting check DNA quality and enzyme conditions.

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Cutting of DNA level 52 का final summary क्या है?

What is the final summary of Cutting of DNA level 52?

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A. reliable digestion के लिए correct enzyme condition controls gel interpretation और records जरूरी हैंCorrect enzyme condition controls gel interpretation and records are needed for reliable digestion

Explanation

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DNA cutting में केवल band देखना काफी नहीं है। Expected pattern controls और cleanup भी important हैं। / Only seeing a band is not enough in DNA cutting. Expected pattern controls and cleanup are also important.

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FAQs

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.