Year-wise Biology practice

NEET 2022 Biology PYQs

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100 questions in this collection · Page 9 of 10

Question 81 of 100
🟢 NEET 2022 📘 CLASS XII

Microbes In Human Welfare

Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A:
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Question 82 of 100
🟢 NEET 2022 📘 CLASS XII

Biodiversity And Conservation

In-situ conservation refers to:
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Question 83 of 100
🟢 NEET 2022 📘 CLASS XII

Biotechnology Principles And Processes

Given below are two statements:
Statement I: Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence.
Statement II: Restriction endonucleases cut the DNA strand a little away from the centre of the palindromic site.
In the light of the above statements, choose the most appropriate answer from the options given below:

AI-generated explanation. Check against your textbook.

Explanation:

Statement I is correct: Restriction endonucleases recognize specific palindromic nucleotide sequences. Statement II is also correct: these enzymes cut the DNA within the recognition site, often a little away from the center of the palindromic sequence, producing "sticky" or blunt ends as described in NCERT. Thus, both statements are correct.

🧠 Did You Know?

Most Type II restriction enzymes cut within or near the palindromic target, enabling precise genetic manipulation for cloning experiments.

💡 NCERT Memory Line:

Restriction endonucleases recognize palindromic sequences and cut within those sites, often not exactly at the center.

Question 84 of 100
🟢 NEET 2022 📘 CLASS XII

Organisms And Populations

If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ___________ individuals per Drosophila per week.
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Question 85 of 100
🟢 NEET 2022 📘 CLASS XII

Ecosystem

Detritivores breakdown detritus into smaller particles. This process is called:
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Question 86 of 100
🟢 NEET 2022 📘 CLASS XI

Biological Classification

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Question 87 of 100
🟢 NEET 2022 📘 CLASS XI

Structural Organisation In Animals

Match List-I with List-II.
List-I List-II
(A)Bronchioles (I)Dense Regular Connective Tissue
(B)Goblet cell (II)Loose Connective Tissue
(C)Tendons (III)Glandular Tissue
(D)Adipose Tissue (IV)Ciliated Epithelium
Choose the correct answer from the options given below:
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Question 88 of 100
🟢 NEET 2022 📘 CLASS XI

Biomolecules

Match List-I with List-II.
List-I (Biological Molecules) List-II (Biological functions)
(A)Glycogen (I)Hormone
(B)Globulin (II)Biocatalyst
(C)Steroids (III)Antibody
(D)Thrombin (IV)Storage product
Choose the correct answer from the options given below:
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Question 89 of 100
🟢 NEET 2022 📘 CLASS XI

Body Fluids And Circulation

Which one of the following statements is correct?
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Question 90 of 100
🟢 NEET 2022 📘 CLASS XI

Neural Control And Coordination

Select the incorrect statement regarding synapses:
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