NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII14:BIOMOLECULES
324866
The secondary structure of a protein refers to
1 \({\rm{\alpha }} - \) helicalbackbone
2 hydrophobic interactions
3 sequence of \({\rm{\alpha }} - \) amino acids
4 fixed configuration of the polypeptide backbone.
Explanation:
Primary structure involves sequence of \({\rm{\alpha - }}\)amino acids in a polypeptide chain. Secondary structure involves \({\rm{\alpha - }}\)helical and \(\beta - \)pleated sheet like structure.
CHXII14:BIOMOLECULES
324867
Assertion : \(\beta\)-pleated sheet structure of protein shows maximum extension. Reason : Intramolecular hydrogen bonding is present in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In \(\beta\)-pleated sheet structure all peptide chains are stretched out to nearly maximum extension and then laid side by side which are held together by intermolecular hydrogen bonds. So, option (3) is correct
CHXII14:BIOMOLECULES
324868
Proteins are found to have two different types of secondary structures viz. \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\) -pleated sheet structure. \(\mathrm{\beta}\) -pleated structure of protein is stabilised by
1 Peptide bonds
2 Van der Waals forces
3 Hydrogen bonds
4 Dipole-dipole interactions
Explanation:
In \(\mathrm{\alpha}\)-helix, hydrogen bonds are present between \(\mathrm{-\mathrm{NH}}\) group of one amino acid residue to the \(\mathrm{>\mathrm{C}=\mathrm{O}}\) group of another aminoacid residue.
CHXII14:BIOMOLECULES
324869
Which of the following statement is incorrect about the secondary structure of protein?
1 It refers to the shape in which long polypeptide chain can exist.
2 It exists in two different type of structures, i.e., \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\)-pleated sheet structure.
3 Its structure arises due to regular folding of the backbone of the polypeptide chain.
4 There is the covalent bonding between \(\mathrm{>\mathrm{C}}\) \(\mathrm{=\mathrm{O}}\) and \(\mathrm{\mathrm{NH}}\) groups of the peptide bond.
Explanation:
The secondary structure of proteins refers to the shape in which a long polypeptide chain can exist. They are found to exist in two different types of structures, i.e., \(\mathrm{\alpha}\) - helix and \(\mathrm{\beta}\)-pleated sheet structure. These structures arise due to the regular folding of the backbone of the polypeptide chain due to hydrogen bonding between and \(\mathrm{\mathrm{NH}}\) group of the peptide bond.
324866
The secondary structure of a protein refers to
1 \({\rm{\alpha }} - \) helicalbackbone
2 hydrophobic interactions
3 sequence of \({\rm{\alpha }} - \) amino acids
4 fixed configuration of the polypeptide backbone.
Explanation:
Primary structure involves sequence of \({\rm{\alpha - }}\)amino acids in a polypeptide chain. Secondary structure involves \({\rm{\alpha - }}\)helical and \(\beta - \)pleated sheet like structure.
CHXII14:BIOMOLECULES
324867
Assertion : \(\beta\)-pleated sheet structure of protein shows maximum extension. Reason : Intramolecular hydrogen bonding is present in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In \(\beta\)-pleated sheet structure all peptide chains are stretched out to nearly maximum extension and then laid side by side which are held together by intermolecular hydrogen bonds. So, option (3) is correct
CHXII14:BIOMOLECULES
324868
Proteins are found to have two different types of secondary structures viz. \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\) -pleated sheet structure. \(\mathrm{\beta}\) -pleated structure of protein is stabilised by
1 Peptide bonds
2 Van der Waals forces
3 Hydrogen bonds
4 Dipole-dipole interactions
Explanation:
In \(\mathrm{\alpha}\)-helix, hydrogen bonds are present between \(\mathrm{-\mathrm{NH}}\) group of one amino acid residue to the \(\mathrm{>\mathrm{C}=\mathrm{O}}\) group of another aminoacid residue.
CHXII14:BIOMOLECULES
324869
Which of the following statement is incorrect about the secondary structure of protein?
1 It refers to the shape in which long polypeptide chain can exist.
2 It exists in two different type of structures, i.e., \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\)-pleated sheet structure.
3 Its structure arises due to regular folding of the backbone of the polypeptide chain.
4 There is the covalent bonding between \(\mathrm{>\mathrm{C}}\) \(\mathrm{=\mathrm{O}}\) and \(\mathrm{\mathrm{NH}}\) groups of the peptide bond.
Explanation:
The secondary structure of proteins refers to the shape in which a long polypeptide chain can exist. They are found to exist in two different types of structures, i.e., \(\mathrm{\alpha}\) - helix and \(\mathrm{\beta}\)-pleated sheet structure. These structures arise due to the regular folding of the backbone of the polypeptide chain due to hydrogen bonding between and \(\mathrm{\mathrm{NH}}\) group of the peptide bond.
324866
The secondary structure of a protein refers to
1 \({\rm{\alpha }} - \) helicalbackbone
2 hydrophobic interactions
3 sequence of \({\rm{\alpha }} - \) amino acids
4 fixed configuration of the polypeptide backbone.
Explanation:
Primary structure involves sequence of \({\rm{\alpha - }}\)amino acids in a polypeptide chain. Secondary structure involves \({\rm{\alpha - }}\)helical and \(\beta - \)pleated sheet like structure.
CHXII14:BIOMOLECULES
324867
Assertion : \(\beta\)-pleated sheet structure of protein shows maximum extension. Reason : Intramolecular hydrogen bonding is present in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In \(\beta\)-pleated sheet structure all peptide chains are stretched out to nearly maximum extension and then laid side by side which are held together by intermolecular hydrogen bonds. So, option (3) is correct
CHXII14:BIOMOLECULES
324868
Proteins are found to have two different types of secondary structures viz. \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\) -pleated sheet structure. \(\mathrm{\beta}\) -pleated structure of protein is stabilised by
1 Peptide bonds
2 Van der Waals forces
3 Hydrogen bonds
4 Dipole-dipole interactions
Explanation:
In \(\mathrm{\alpha}\)-helix, hydrogen bonds are present between \(\mathrm{-\mathrm{NH}}\) group of one amino acid residue to the \(\mathrm{>\mathrm{C}=\mathrm{O}}\) group of another aminoacid residue.
CHXII14:BIOMOLECULES
324869
Which of the following statement is incorrect about the secondary structure of protein?
1 It refers to the shape in which long polypeptide chain can exist.
2 It exists in two different type of structures, i.e., \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\)-pleated sheet structure.
3 Its structure arises due to regular folding of the backbone of the polypeptide chain.
4 There is the covalent bonding between \(\mathrm{>\mathrm{C}}\) \(\mathrm{=\mathrm{O}}\) and \(\mathrm{\mathrm{NH}}\) groups of the peptide bond.
Explanation:
The secondary structure of proteins refers to the shape in which a long polypeptide chain can exist. They are found to exist in two different types of structures, i.e., \(\mathrm{\alpha}\) - helix and \(\mathrm{\beta}\)-pleated sheet structure. These structures arise due to the regular folding of the backbone of the polypeptide chain due to hydrogen bonding between and \(\mathrm{\mathrm{NH}}\) group of the peptide bond.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII14:BIOMOLECULES
324866
The secondary structure of a protein refers to
1 \({\rm{\alpha }} - \) helicalbackbone
2 hydrophobic interactions
3 sequence of \({\rm{\alpha }} - \) amino acids
4 fixed configuration of the polypeptide backbone.
Explanation:
Primary structure involves sequence of \({\rm{\alpha - }}\)amino acids in a polypeptide chain. Secondary structure involves \({\rm{\alpha - }}\)helical and \(\beta - \)pleated sheet like structure.
CHXII14:BIOMOLECULES
324867
Assertion : \(\beta\)-pleated sheet structure of protein shows maximum extension. Reason : Intramolecular hydrogen bonding is present in them.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In \(\beta\)-pleated sheet structure all peptide chains are stretched out to nearly maximum extension and then laid side by side which are held together by intermolecular hydrogen bonds. So, option (3) is correct
CHXII14:BIOMOLECULES
324868
Proteins are found to have two different types of secondary structures viz. \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\) -pleated sheet structure. \(\mathrm{\beta}\) -pleated structure of protein is stabilised by
1 Peptide bonds
2 Van der Waals forces
3 Hydrogen bonds
4 Dipole-dipole interactions
Explanation:
In \(\mathrm{\alpha}\)-helix, hydrogen bonds are present between \(\mathrm{-\mathrm{NH}}\) group of one amino acid residue to the \(\mathrm{>\mathrm{C}=\mathrm{O}}\) group of another aminoacid residue.
CHXII14:BIOMOLECULES
324869
Which of the following statement is incorrect about the secondary structure of protein?
1 It refers to the shape in which long polypeptide chain can exist.
2 It exists in two different type of structures, i.e., \(\mathrm{\alpha}\)-helix and \(\mathrm{\beta}\)-pleated sheet structure.
3 Its structure arises due to regular folding of the backbone of the polypeptide chain.
4 There is the covalent bonding between \(\mathrm{>\mathrm{C}}\) \(\mathrm{=\mathrm{O}}\) and \(\mathrm{\mathrm{NH}}\) groups of the peptide bond.
Explanation:
The secondary structure of proteins refers to the shape in which a long polypeptide chain can exist. They are found to exist in two different types of structures, i.e., \(\mathrm{\alpha}\) - helix and \(\mathrm{\beta}\)-pleated sheet structure. These structures arise due to the regular folding of the backbone of the polypeptide chain due to hydrogen bonding between and \(\mathrm{\mathrm{NH}}\) group of the peptide bond.
