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Zoology MCQs for NEET — Practice Questions with Answers

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How many heme groups are present in Myoglobin

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Explanation

Myoglobin contains single polypeptide which contains one heme group

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How many polypeptide subunits are present in Haemoglobin

None of these

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Explanation

4 subunits are present 2β and 2α

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Which of the following is true about primary metabolites?

compounds which are products of essential pathways of plants

Universally present in all plant kingdom

It’s absence leads to death of plant cell

All of the above

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Explanation

Refer NCERT, Heading 9.2, page-146, para 2.

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Which of the following is true about secondary metabolites of plants?

It’s restricted to a particular kingdom of plants

It’s absence does not lead to immediate death of plants

No direct function in growth and development of plants

All of the above

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Explanation

Refer NCERT, Heading 9.2, page-146, para 2

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Which of the following is polymeric secondary metabolites?

Rubber

Gums

Abrin

Both 1 and 2

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Explanation

Refer NCERT, Heading 9.2, page-146, para

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Which of the following is not true about secondary metabolites?

They have direct role in photosynthesis, respiration and reproduction

They act as toxins or pigments or drugs or lectins

Distribution is limited and restricted to special taxonomic group

Organic compound of diverse nature

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Explanation

Refer NCERT, Heading 9.1, page-143, para 2

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Which of the following is not a secondary metabolite?

Rubber

Ricin

Morphine

Oxaloacetic acid

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Explanation

Refer NCERT, Heading 9.2, page-146, para 2, OAA is obtained from Krebs’ cycle so it’s a primary metabolite

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Which of the following is true about compounds present in acid soluble pool?

They have molecular weight ranging from 18 to 800 Daltons

They are called as micromolecules

They are called as Biomolecules

All of the above

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Explanation

Refer NCERT, Heading 9.3 page-146, para 1 and 2

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Which of the following is true about compounds present in acid insoluble pool?

They have molecular weight ranging from 10,000 Daltons and above except lipids

They are called as Macromolecules

They are called as Biomacromolecules

All of the above

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Explanation

Refer NCERT, Heading 9.3 page-146, para 1 and 2

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Which of the following is not a polymeric substance?

Carbohydrates

Lipids

Nucleic Acids

Proteins

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Explanation

Refer NCERT, Heading 9.3 page-146, para 2

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