277758
The quaternary structure of protein has minimum
1 One polypeptide chain
2 Two polypeptide chains
3 Three polypeptide chains
4 Four polypeptide chains
Explanation:
(b) Have minimum two polypeptide chains.
NCERT Page-150 / N-112
Biomolecules
277759
In a polypeptide the first amino acid is represented as
1 $\text{N}$ - terminal on left hand
2 $\text{N}$-terminal on right hand
3 C-terminal on left hand
4 C-terminal on right hand
Explanation:
(a) The first amino acid is represented as $N$ terminal on left-hand
NCERT Page-150 / N-112
Biomolecules
277760
For a protein to have a quaternary structure, it must
1 have four amino acids.
2 consist of two or more polypeptide subunits.
3 consist of four polypeptide subunits.
4 have at least four disulphide bridges.
Explanation:
(b) Quaternary structure is the three-dimensional structure of a multi-subunit protein. For a protein to have a quaternary structure, it must consist of two or more polypeptide subunits.
NCERT Page-150 / N-112
Biomolecules
277761
The quaternary structure of human haemoglobin is best described as a
1 dimer of identical subunits.
2 dimer of different subunits.
3 tetramer of four different subunits.
4 tetramer of two different subunits.
Explanation:
(d) Haemoglobin consists of 4 subunits. Two of these are identical to each other. Hence, two subunits of a type and two subunits of $b$ type together constitute the human haemoglobin $\left( \text{Hb} \right)$.
NCERT Page-150 / N-112
Biomolecules
277763
The secondary structure of that portion of an integral protein that is buried in the lipid bilayer of a cell membrane is]#
1 $\beta $-strand
2 random coil
3 $\beta $-bend
4 $\alpha $-helix
Explanation:
(d) Integral proteins have both hydrophobic and hydrophilic parts. The hydrophilic portion of these proteins interact with the heads of the lipid molecule. The hydrophobic portion of the protein is mostly found in the bilipid molecule. The secondary structure of such type of hydrophobic portions is present in the form of $\alpha $-helix.
277758
The quaternary structure of protein has minimum
1 One polypeptide chain
2 Two polypeptide chains
3 Three polypeptide chains
4 Four polypeptide chains
Explanation:
(b) Have minimum two polypeptide chains.
NCERT Page-150 / N-112
Biomolecules
277759
In a polypeptide the first amino acid is represented as
1 $\text{N}$ - terminal on left hand
2 $\text{N}$-terminal on right hand
3 C-terminal on left hand
4 C-terminal on right hand
Explanation:
(a) The first amino acid is represented as $N$ terminal on left-hand
NCERT Page-150 / N-112
Biomolecules
277760
For a protein to have a quaternary structure, it must
1 have four amino acids.
2 consist of two or more polypeptide subunits.
3 consist of four polypeptide subunits.
4 have at least four disulphide bridges.
Explanation:
(b) Quaternary structure is the three-dimensional structure of a multi-subunit protein. For a protein to have a quaternary structure, it must consist of two or more polypeptide subunits.
NCERT Page-150 / N-112
Biomolecules
277761
The quaternary structure of human haemoglobin is best described as a
1 dimer of identical subunits.
2 dimer of different subunits.
3 tetramer of four different subunits.
4 tetramer of two different subunits.
Explanation:
(d) Haemoglobin consists of 4 subunits. Two of these are identical to each other. Hence, two subunits of a type and two subunits of $b$ type together constitute the human haemoglobin $\left( \text{Hb} \right)$.
NCERT Page-150 / N-112
Biomolecules
277763
The secondary structure of that portion of an integral protein that is buried in the lipid bilayer of a cell membrane is]#
1 $\beta $-strand
2 random coil
3 $\beta $-bend
4 $\alpha $-helix
Explanation:
(d) Integral proteins have both hydrophobic and hydrophilic parts. The hydrophilic portion of these proteins interact with the heads of the lipid molecule. The hydrophobic portion of the protein is mostly found in the bilipid molecule. The secondary structure of such type of hydrophobic portions is present in the form of $\alpha $-helix.
277758
The quaternary structure of protein has minimum
1 One polypeptide chain
2 Two polypeptide chains
3 Three polypeptide chains
4 Four polypeptide chains
Explanation:
(b) Have minimum two polypeptide chains.
NCERT Page-150 / N-112
Biomolecules
277759
In a polypeptide the first amino acid is represented as
1 $\text{N}$ - terminal on left hand
2 $\text{N}$-terminal on right hand
3 C-terminal on left hand
4 C-terminal on right hand
Explanation:
(a) The first amino acid is represented as $N$ terminal on left-hand
NCERT Page-150 / N-112
Biomolecules
277760
For a protein to have a quaternary structure, it must
1 have four amino acids.
2 consist of two or more polypeptide subunits.
3 consist of four polypeptide subunits.
4 have at least four disulphide bridges.
Explanation:
(b) Quaternary structure is the three-dimensional structure of a multi-subunit protein. For a protein to have a quaternary structure, it must consist of two or more polypeptide subunits.
NCERT Page-150 / N-112
Biomolecules
277761
The quaternary structure of human haemoglobin is best described as a
1 dimer of identical subunits.
2 dimer of different subunits.
3 tetramer of four different subunits.
4 tetramer of two different subunits.
Explanation:
(d) Haemoglobin consists of 4 subunits. Two of these are identical to each other. Hence, two subunits of a type and two subunits of $b$ type together constitute the human haemoglobin $\left( \text{Hb} \right)$.
NCERT Page-150 / N-112
Biomolecules
277763
The secondary structure of that portion of an integral protein that is buried in the lipid bilayer of a cell membrane is]#
1 $\beta $-strand
2 random coil
3 $\beta $-bend
4 $\alpha $-helix
Explanation:
(d) Integral proteins have both hydrophobic and hydrophilic parts. The hydrophilic portion of these proteins interact with the heads of the lipid molecule. The hydrophobic portion of the protein is mostly found in the bilipid molecule. The secondary structure of such type of hydrophobic portions is present in the form of $\alpha $-helix.
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Biomolecules
277758
The quaternary structure of protein has minimum
1 One polypeptide chain
2 Two polypeptide chains
3 Three polypeptide chains
4 Four polypeptide chains
Explanation:
(b) Have minimum two polypeptide chains.
NCERT Page-150 / N-112
Biomolecules
277759
In a polypeptide the first amino acid is represented as
1 $\text{N}$ - terminal on left hand
2 $\text{N}$-terminal on right hand
3 C-terminal on left hand
4 C-terminal on right hand
Explanation:
(a) The first amino acid is represented as $N$ terminal on left-hand
NCERT Page-150 / N-112
Biomolecules
277760
For a protein to have a quaternary structure, it must
1 have four amino acids.
2 consist of two or more polypeptide subunits.
3 consist of four polypeptide subunits.
4 have at least four disulphide bridges.
Explanation:
(b) Quaternary structure is the three-dimensional structure of a multi-subunit protein. For a protein to have a quaternary structure, it must consist of two or more polypeptide subunits.
NCERT Page-150 / N-112
Biomolecules
277761
The quaternary structure of human haemoglobin is best described as a
1 dimer of identical subunits.
2 dimer of different subunits.
3 tetramer of four different subunits.
4 tetramer of two different subunits.
Explanation:
(d) Haemoglobin consists of 4 subunits. Two of these are identical to each other. Hence, two subunits of a type and two subunits of $b$ type together constitute the human haemoglobin $\left( \text{Hb} \right)$.
NCERT Page-150 / N-112
Biomolecules
277763
The secondary structure of that portion of an integral protein that is buried in the lipid bilayer of a cell membrane is]#
1 $\beta $-strand
2 random coil
3 $\beta $-bend
4 $\alpha $-helix
Explanation:
(d) Integral proteins have both hydrophobic and hydrophilic parts. The hydrophilic portion of these proteins interact with the heads of the lipid molecule. The hydrophobic portion of the protein is mostly found in the bilipid molecule. The secondary structure of such type of hydrophobic portions is present in the form of $\alpha $-helix.
277758
The quaternary structure of protein has minimum
1 One polypeptide chain
2 Two polypeptide chains
3 Three polypeptide chains
4 Four polypeptide chains
Explanation:
(b) Have minimum two polypeptide chains.
NCERT Page-150 / N-112
Biomolecules
277759
In a polypeptide the first amino acid is represented as
1 $\text{N}$ - terminal on left hand
2 $\text{N}$-terminal on right hand
3 C-terminal on left hand
4 C-terminal on right hand
Explanation:
(a) The first amino acid is represented as $N$ terminal on left-hand
NCERT Page-150 / N-112
Biomolecules
277760
For a protein to have a quaternary structure, it must
1 have four amino acids.
2 consist of two or more polypeptide subunits.
3 consist of four polypeptide subunits.
4 have at least four disulphide bridges.
Explanation:
(b) Quaternary structure is the three-dimensional structure of a multi-subunit protein. For a protein to have a quaternary structure, it must consist of two or more polypeptide subunits.
NCERT Page-150 / N-112
Biomolecules
277761
The quaternary structure of human haemoglobin is best described as a
1 dimer of identical subunits.
2 dimer of different subunits.
3 tetramer of four different subunits.
4 tetramer of two different subunits.
Explanation:
(d) Haemoglobin consists of 4 subunits. Two of these are identical to each other. Hence, two subunits of a type and two subunits of $b$ type together constitute the human haemoglobin $\left( \text{Hb} \right)$.
NCERT Page-150 / N-112
Biomolecules
277763
The secondary structure of that portion of an integral protein that is buried in the lipid bilayer of a cell membrane is]#
1 $\beta $-strand
2 random coil
3 $\beta $-bend
4 $\alpha $-helix
Explanation:
(d) Integral proteins have both hydrophobic and hydrophilic parts. The hydrophilic portion of these proteins interact with the heads of the lipid molecule. The hydrophobic portion of the protein is mostly found in the bilipid molecule. The secondary structure of such type of hydrophobic portions is present in the form of $\alpha $-helix.