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प्रश्न
Write types of proteins depending upon molecular shape.
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उत्तर
Based on the molecular shapes of proteins, they are classified into globular and fibrous proteins.
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संबंधित प्रश्न
Select the most correct choice.
A disulphide link gives rise to the following structure of a protein.
Write the names and schematic representations of all the possible dipeptides formed from alanine, glycine and tyrosine.
Draw a neat diagram for the following:
Secondary structure of protein
Draw a neat diagram for the following:
Enzyme catalysis
The chemical nature of peptide bond in proteins is ____________
Write the structure of Zwitterion of alanine.
Write the number of chiral carbon atoms present in fructose.
Complete the following reaction.
\[\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] ?}\]
Define peptide bond.
Write industrial application of enzyme catalysis.
Explain globular and fibrous proteins with example.
Define α-amino acids.
Draw the structure of Haworth formula of sucrose.
Explain the primary structure of proteins.
Pyrimidines are ______.
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 ______
Read the following statements and select the correct option.
- In quaternary structure, the peptide chains are much looped, twisted, and folded back on themselves due to formation of hydrogen bonds.
- When a protein has more than two polypeptide subunits their arrangement in space is called secondary structure.
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 |
Choose the WRONG statement from the following.
Identify (i) and (ii) and select the correct option.
i. Protein portion of the enzyme is called the ____________.
ii. Non-protein constituent binding to the enzyme is called as the ____________.
The optically inactive amino acid is ____________.
Which of the following contains keratin?
The conjugate acid of \[\ce{CO^2-_3}\] is ____________.
Which of the following is NOT a protein?
Proteins are polypeptides with linear chains of i ______ linked by ii ______ bonds.
Identify the enzyme X in the following reaction.
\[\ce{H2O2(aq) ->[x] H2O(l) + \frac{1}{2} O2(g)}\]
Identify the enzyme that catalyses the reaction of CO2 with water in huma body.
The bacteriostatic antibiotic from the following is ______.
β-pleated sheets of polypeptide chains are present in ______.
Which of the following amino acids has \[\ce{Me - S - CH2 - CH2 -}\] group in the side chain?
The enzyme which converts maltose to glucose is ______.
The amino acid having −CH3 as side chain is ____________.
The basic amino acid is ____________.
The most abundant cellular protein is ______.
Proteins attached with a prosthetic group are called ______ proteins.
A protein is a sequence of amino acids. The end of the polypeptide chain of -NH2 end and at -COOH end are respectively called ______.
Which of the following molecules from a zwitter ion?
Which of the following amino acids has –CH2OH group in its side chain?
Which among the following is a globular protein?
Identify the side chain –R present in amino acid lysine.
Which among the following is basic amino acid?
In a protein, various amino acids linked together by ____________.
Among the following the achiral amino acid is:
The secondary structure of a protein refers to ____________.
Which of the following statement is not correct?
Which of the following amino acids is achiral?
Give the differences between the primary and secondary structure of proteins.
Write the Zwitter ion structure of alanine.
Write a short note on peptide bond.
Write a note on denaturation of proteins.
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 a short note on peptide bond.
Write a short note on peptide bond.
Write a short note on peptide bond.
Define the term Protein.
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 the Zwitter ion structure of alanine.
Write a short note on peptide bond.
Which from following is an essential amino acid?
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 ______.
