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प्रश्न
Complete the following reaction.
\[\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] ?}\]
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उत्तर
\[\begin{array}{cc}
\phantom{...........................................}\ce{O}\\
\phantom{...........................................}||\\
\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] \underset{\text{Dipeptide}}{H2N - CH2 - C - NH - CH2 - CH2 - COOH}}
\end{array}\]
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संबंधित प्रश्न
Select the most correct choice.
A disulphide link gives rise to the following structure of a protein.
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.
Write the names and schematic representations of all the possible dipeptides formed from alanine, glycine and tyrosine.
Draw a neat diagram for the following:
Zwitter ion
The chemical nature of peptide bond in proteins is ____________
In the process of denaturation, there is NO change in the structure following protein.
Define peptide bond.
Explain globular and fibrous proteins with example.
Define α-amino acids.
From the following identify the INCORRECT match with respect to the different structures of proteins.
____________ is NOT a simple protein.
Nucleotide differs from a nucleoside as it has ______
Pyrimidines are ______.
Histones are involved in packaging of DNA into structural units called ______.
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 (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?
Proteins are polypeptides with linear chains of i ______ linked by ii ______ bonds.
Identify the enzyme X in the following reaction.
\[\ce{H2O2(aq) ->[x] H2O(l) + \frac{1}{2} O2(g)}\]
The bacteriostatic antibiotic from the following is ______.
For the conversion of oxygen to ozone in the atmosphere, nitric oxide in gaseous phase acts as ______.
Which of the following amino acids has \[\ce{Me - S - CH2 - CH2 -}\] group in the side chain?
Which of the following is not a broad spectrum antibiotics?
The amino acid having −CH3 as side chain is ____________.
Which of the following is the simplest amino acid?
The basic amino acid 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 ______.
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 amino acids has the lowest molecular mass?
Which among the following is a globular protein?
Among the following the achiral amino acid is:
In aqueous solution of amino acids mostly exists in, ____________.
Among the following L-serine is:
Which of the following amino acids is achiral?
Give the differences between the primary and secondary structure of proteins.
Write a note on denaturation of proteins.
Write the structure of all possible dipeptides which can be obtained from glycine and alanine.
Which of the following amino acid is basic in nature?
The amino acid, which is basic in nature is ______.
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?
Tertiary structure of protein is stabilised by ______.
Peptide and hydrogen bonds are present in the primary structure of the protein which is due to ______.
The tightly bound non-proteinaceous organic compound in enzyme is ______.
Write a short note on peptide bond.
Write a short note on peptide bond.
Write a short note on 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.
Short Answer Question.
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 the Zwitter ion structure of alanine.
The number of amino groups in the amino acids present in amides is ______.
