277989
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(NCERT)
277990
Which of the two groups (marked as 1, 2, 3, & 4) of following formula involved in peptide bond between different amino acids?
1 2 and 3
2 1 and 3
3 1 and 4
4 2 and 4
Explanation:
(b) The different amino acids are attached through$\text{Co}-\text{NH}$ bond, called peptide bond or amide bond.
NCERT Page-151
BIOMOLECULES(NCERT)
277991
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.
BIOMOLECULES(NCERT)
277992
Select the incorrect statement.
1 Ribozymes are nucleic acids with catalytic power.
2 Proteins are homopolymer made of amino acids.
3 Inulin is a polymer of fructose.
4 Glycogen is stored in liver and muscles.
Explanation:
(b) A protein is a heteropolymer and not a homopolymer.
NCERT Page-149 / N-111
BIOMOLECULES(NCERT)
277986
The quaternary structure of protein has minimum
277989
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(NCERT)
277990
Which of the two groups (marked as 1, 2, 3, & 4) of following formula involved in peptide bond between different amino acids?
1 2 and 3
2 1 and 3
3 1 and 4
4 2 and 4
Explanation:
(b) The different amino acids are attached through$\text{Co}-\text{NH}$ bond, called peptide bond or amide bond.
NCERT Page-151
BIOMOLECULES(NCERT)
277991
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.
BIOMOLECULES(NCERT)
277992
Select the incorrect statement.
1 Ribozymes are nucleic acids with catalytic power.
2 Proteins are homopolymer made of amino acids.
3 Inulin is a polymer of fructose.
4 Glycogen is stored in liver and muscles.
Explanation:
(b) A protein is a heteropolymer and not a homopolymer.
NCERT Page-149 / N-111
BIOMOLECULES(NCERT)
277986
The quaternary structure of protein has minimum
277989
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(NCERT)
277990
Which of the two groups (marked as 1, 2, 3, & 4) of following formula involved in peptide bond between different amino acids?
1 2 and 3
2 1 and 3
3 1 and 4
4 2 and 4
Explanation:
(b) The different amino acids are attached through$\text{Co}-\text{NH}$ bond, called peptide bond or amide bond.
NCERT Page-151
BIOMOLECULES(NCERT)
277991
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.
BIOMOLECULES(NCERT)
277992
Select the incorrect statement.
1 Ribozymes are nucleic acids with catalytic power.
2 Proteins are homopolymer made of amino acids.
3 Inulin is a polymer of fructose.
4 Glycogen is stored in liver and muscles.
Explanation:
(b) A protein is a heteropolymer and not a homopolymer.
NCERT Page-149 / N-111
BIOMOLECULES(NCERT)
277986
The quaternary structure of protein has minimum
277989
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(NCERT)
277990
Which of the two groups (marked as 1, 2, 3, & 4) of following formula involved in peptide bond between different amino acids?
1 2 and 3
2 1 and 3
3 1 and 4
4 2 and 4
Explanation:
(b) The different amino acids are attached through$\text{Co}-\text{NH}$ bond, called peptide bond or amide bond.
NCERT Page-151
BIOMOLECULES(NCERT)
277991
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.
BIOMOLECULES(NCERT)
277992
Select the incorrect statement.
1 Ribozymes are nucleic acids with catalytic power.
2 Proteins are homopolymer made of amino acids.
3 Inulin is a polymer of fructose.
4 Glycogen is stored in liver and muscles.
Explanation:
(b) A protein is a heteropolymer and not a homopolymer.
NCERT Page-149 / N-111
BIOMOLECULES(NCERT)
277986
The quaternary structure of protein has minimum
277989
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(NCERT)
277990
Which of the two groups (marked as 1, 2, 3, & 4) of following formula involved in peptide bond between different amino acids?
1 2 and 3
2 1 and 3
3 1 and 4
4 2 and 4
Explanation:
(b) The different amino acids are attached through$\text{Co}-\text{NH}$ bond, called peptide bond or amide bond.
NCERT Page-151
BIOMOLECULES(NCERT)
277991
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.
BIOMOLECULES(NCERT)
277992
Select the incorrect statement.
1 Ribozymes are nucleic acids with catalytic power.
2 Proteins are homopolymer made of amino acids.
3 Inulin is a polymer of fructose.
4 Glycogen is stored in liver and muscles.
Explanation:
(b) A protein is a heteropolymer and not a homopolymer.
NCERT Page-149 / N-111
BIOMOLECULES(NCERT)
277986
The quaternary structure of protein has minimum
