NEET Practice Questions (MCQs) with Answers & Solutions

Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

All Physics Chemistry Botany Zoology
Register free to filter questions

Which of the following is responsible for the stability of secondary polypeptide?

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

Secondary structure of protein incudes Alpha helix and beta pleated sheath which are stabilised by hydrogen bonding.

How many of the following bonds is present in tertiary structure of protein

Hydrophobic Interaction, Hydrogen bonding, Di-sulphide bond, Ionic bond, peptide bond

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

All of the above mentioned bonds are present in the tertiary structure of proteins

Majority of the enzymes and proteins exist in which type of structure of proteins?

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

Refer NCERT, Heading 9.7, page-149, para 1

Which of the following is the strongest bond in protein?

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

Peptide bond is the strongest bond in the protein and these are also resonance stabilised

Quaternary structure of proteins are formed by

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

Refer NCERT, Heading 9.7, page-149, para 2

Which of the following proteins exist in their quaternary structure

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

Haemoglobin exists in quaternary structure of protein

How many heme groups are present in Haemoglobin

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

Each subunit contains one heme group

How many heme groups are present in Myoglobin

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation
  • Myoglobin contains single polypeptide which contains one heme group

How many polypeptide subunits are present in Haemoglobin

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

4 subunits are present 2β and 2α

Which of the following is true about primary metabolites?

You've reached today's free limit of 20 questions. Log in to keep practising for free.
Explanation

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

Ready to ace NEET?

Free access · No credit card required

Frequently Asked Questions

Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.

No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.

The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.