Advertisements
Advertisements
प्रश्न
Select the most correct choice.
A disulphide link gives rise to the following structure of a protein.
विकल्प
Primary
Secondary
Tertiary
Quaternary
Advertisements
उत्तर
Tertiary
APPEARS IN
संबंधित प्रश्न
Give scientific reasons:
α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.
Give scientific reasons:
On boiling egg albumin becomes opaque white.
Draw a neat diagram for the following:
Zwitter ion
The chemical nature of peptide bond in proteins is ____________
Write the structure of Zwitterion of alanine.
Complete the following reaction.
\[\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] ?}\]
Define peptide bond.
Write types of proteins depending upon molecular shape.
Explain denaturation of proteins.
Explain globular and fibrous proteins with example.
Define α-amino acids.
Explain the primary structure of proteins.
____________ is NOT a simple protein.
Nucleotide differs from a nucleoside as it has ______
Histones are involved in packaging of DNA into structural units called ______.
Purine and pyrimidine bases are placed regularly along the DNA molecules at a distance of ______
Identify the option that correctly describes the amphoteric nature of proteins.
Identify 'P' and 'Q' in the following table.
| Proteins | Role |
| immunoglobulin | P |
| Q | Blood clotting |
The optically inactive amino acid is ____________.
Which of the following contains keratin?
Which of the following is NOT a protein?
Proteins are ______ of amino acids.
Complete the analogy and select the correct option.
α-helix structure : Keratin :: β-pleated sheet : ____________.
Identify the enzyme that catalyses the reaction of CO2 with water in huma body.
For the conversion of oxygen to ozone in the atmosphere, nitric oxide in gaseous phase acts as ______.
β-pleated sheets of polypeptide chains are present in ______.
The amino acid having −CH3 as side chain is ____________.
The molecular weight of hemoglobin is ______ Daltons.
The most abundant cellular protein is ______.
If side-chain group-R for amino acid is -CH2OH, identify the amino acid from following?
Identify basic amino acid from following.
Which among the following is basic amino acid?
Among the following the achiral amino acid is:
Among the following L-serine is:
Which of the following statement is not correct?
Give the differences between the primary and secondary structure of proteins.
Write the Zwitter ion structure of alanine.
Write the structure of all possible dipeptides which can be obtained from glycine and alanine.
Define enzymes.
Denaturation of proteins leads to loss of their biological activity by:
Which among the following enzymes hydrolysis starch?
Amino acids in a protein molecule, are linked by a peptide bond. Which of the following correctly shows the reaction of forming peptide bonds?
Peptide and hydrogen bonds are present in the primary structure of the protein which is due to ______.
Write a short note on peptide bond.
Write the Zwitter ion structure of alanine.
Write a short note on peptide bond.
Write a short note on a peptide bond.
Write the Zwitter ion structure of alanine.
Write the Zwitter ion structure of alanine.
Write a short note on peptide bond.
Write a short note on peptide bond.
Write a short note on peptide bond.
Which from following amino acids contains heterocyclic ring at a side chain (R) group?
In large proteins, peptide chains are much looped, twisted and folded back on themselves. The folded structure is due to the formation of ______ bonds.
The number of amino groups in the amino acids present in amides is ______.
