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background growth MCQ Questions for Class 11

background growth se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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5 questions tagged with background growth.

Question 1/5 Easy Biotechnology Principles of Biotechnology Competent Host Class 11 Level 35

बहुत अधिक background growth क्या दिखा सकती है?

What can too much background growth show?

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Correct Answer

A. Weak selection या contaminationWeak selection or contamination

Step 1

Concept

Background growth can come from weak antibiotic contamination or empty vector. Screening and controls are needed.

Step 2

Why this answer is correct

The correct answer is A. Weak selection या contamination / Weak selection or contamination. Background growth can come from weak antibiotic contamination or empty vector. Screening and controls are needed.

Step 3

Exam Tip

Background growth weak antibiotic contamination या empty vector से हो सकती है। Screening और controls जरूरी हैं।

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Question 2/5 Easy Biotechnology Principles of Biotechnology Competent Host Class 11 Level 35

Negative control का उद्देश्य क्या है?

What is the purpose of a negative control?

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Correct Answer

A. Contamination या background growth check करनाChecking contamination or background growth

Step 1

Concept

A negative control has no plasmid. Growth can indicate contamination or selection problem.

Step 2

Why this answer is correct

The correct answer is A. Contamination या background growth check करना / Checking contamination or background growth. A negative control has no plasmid. Growth can indicate contamination or selection problem.

Step 3

Exam Tip

Negative control में plasmid नहीं होता। Growth आने पर contamination या selection problem हो सकती है।

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Question 3/5 Easy Biotechnology Principles of Biotechnology Competent Host Class 11 Level 32

Old antibiotic plate में antibiotic degrade हो जाए तो क्या हो सकता है?

What can happen if antibiotic is degraded in an old plate?

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Correct Answer

D. Background growth बढ़ सकती हैBackground growth can increase

Step 1

Concept

Degraded antibiotic will not provide effective selection. Non-transformed cells may also grow.

Step 2

Why this answer is correct

The correct answer is D. Background growth बढ़ सकती है / Background growth can increase. Degraded antibiotic will not provide effective selection. Non-transformed cells may also grow.

Step 3

Exam Tip

Degraded antibiotic effective selection नहीं करेगा। इससे non-transformed cells भी grow कर सकती हैं।

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Question 4/5 Easy Biotechnology Principles of Biotechnology Competent Host Class 11 Level 31

Antibiotic concentration बहुत कम हो तो क्या समस्या हो सकती है?

What can happen if antibiotic concentration is too low?

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Correct Answer

B. Non-transformed cells भी grow कर सकती हैंNon-transformed cells may also grow

Step 1

Concept

Too little antibiotic can weaken selection. This can increase background growth.

Step 2

Why this answer is correct

The correct answer is B. Non-transformed cells भी grow कर सकती हैं / Non-transformed cells may also grow. Too little antibiotic can weaken selection. This can increase background growth.

Step 3

Exam Tip

कम antibiotic selection को कमजोर कर सकता है। इससे background growth बढ़ सकती है।

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Question 5/5 Easy Biotechnology Principles of Biotechnology Competent Host Class 11 Level 30

Negative control में plasmid न डालने का उद्देश्य क्या है?

What is the purpose of not adding plasmid in a negative control?

Explanation opens after your attempt
Correct Answer

A. Background growth check करनाTo check background growth

Step 1

Concept

A no-plasmid control can show unexpected growth on an antibiotic plate. This can reveal contamination or selection problems.

Step 2

Why this answer is correct

The correct answer is A. Background growth check करना / To check background growth. A no-plasmid control can show unexpected growth on an antibiotic plate. This can reveal contamination or selection problems.

Step 3

Exam Tip

No-plasmid control antibiotic plate पर unexpected growth दिखा सकता है। इससे contamination या selection problem पकड़ी जा सकती है।

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