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Question
Assertion (A): Proteins are polymers of α-amino acids connected by a peptide bond.
Reason (R): A tetrapeptide contains 4 amino acids linked by 4 peptide bonds.
Options
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
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Solution
Assertion (A) is true, but Reason (R) is false.
Explanation:
A tetrapeptide is made up of four amino acids bonded together by three peptide bonds.
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RELATED QUESTIONS
How are proteins classified on the basis of molecular shapes?
How is tripeptide formed?
Differentiate between the following:
Fibrous proteins and Globular proteins
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Peptide linkage and Glycosidic linkage
In fibrous proteins, polypeptide chains are held together by:
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(ii) disulphide linkage
(iii) electrostatic forces of attraction
(iv) hydrogen bonds
Which of the following are purine bases?
(i) Guanine
(ii) Adenine
(iii) Thymine
(iv) Uracil
Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Proteins are found to have two different types of secondary structures viz alpha-helix and beta-pleated sheet structure.
Reason (R): The secondary structure of proteins is stabilized by hydrogen bonding.
Select the most appropriate answer from the options given below:
Presence of disulphide link gives rise to which structure of protein?
What is the effect of denaturation on the structure of proteins?
Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (Nterminal).
Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of a type and two subunits β type.)
In the light of the above statements, choose the correct answer from the options given below:
