Zoology MCQs for NEET — Practice Questions with Answers

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Which is not true about monosaccharides?

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Explanation

Monosaccharides are not always ketoses; they can also be aldoses. For example, glucose is an aldose while fructose is a ketose. Ketoses have a carbonyl group (C=O) within the carbon chain, whereas aldoses have it at the end of the chain.

Which bimolecular fights against infectious organisms?

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Explanation

Proteins, particularly antibodies and other immune proteins, are essential in fighting against infectious organisms. They recognize and neutralize pathogens like bacteria and viruses.

End of every polypeptide chain is known as:

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Explanation

The end of a polypeptide chain is referred to as the terminal. Polypeptides have two ends: the N-terminal (amino end) and the C-terminal (carboxyl end).

Which are the terminals of polypeptide chain?

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Explanation

The terminals of a polypeptide chain are the N-terminal (amino end) and the C-terminal (carboxyl end). These termini are crucial for protein synthesis and function.

The secondary structure of protein means:

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Which of the following is correct for the quaternary structure of protein?

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Which of the following bond groups are involved in the formation of quaternary Protein?

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Explanation

The formation of quaternary protein structures involves various types of bonds including disulfide bonds and ionic bonds. Disulfide bonds are strong covalent bonds formed between cysteine residues in different polypeptide chains, while ionic bonds are electrostatic attractions between oppositely charged side chains.

Which one is not correct for hemoglobin?

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Find out the miss matched pair

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Explanation

Immunoglobulin is not responsible for the movement of the body. It is an antibody that plays a key role in the immune response by identifying and neutralizing foreign objects such as bacteria and viruses. Hence, option 4 is the mismatched pair.

Which of the following statement is incorrect about lmmunoglobulin?

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Explanation

Immunoglobulins (antibodies) are not present in blood cells; they are present in the blood plasma. They consist of more than one polypeptide chain and have the property of immunity. Hence, option 3 is incorrect.

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