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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:
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:
Secondary structure of protein
Draw a neat diagram for the following:
Enzyme catalysis
The optically inactive α-amino acid among the following is _____________
Write the structure of Zwitterion of alanine.
Define peptide bond.
Write types of proteins depending upon molecular shape.
Write industrial application of enzyme catalysis.
Explain globular and fibrous proteins with example.
Draw the structure of Haworth formula of sucrose.
Explain the primary structure of proteins.
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 ______
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 |
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 ____________.
Proteins are ______ of amino acids.
Proteins are polypeptides with linear chains of i ______ linked by ii ______ bonds.
Identify the enzyme X in the following reaction.
\[\ce{H2O2(aq) ->[x] H2O(l) + \frac{1}{2} O2(g)}\]
Complete the analogy and select the correct option.
α-helix structure : Keratin :: β-pleated sheet : ____________.
Which among the following amino acids has lowest molar mass?
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?
The enzyme which converts maltose to glucose is ______.
The amino acid having −CH3 as side chain is ____________.
Which of the following amino acid is an essential amino acid?
Which of the following is the simplest amino acid?
The number of proteins in an average human cell is over ______.
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 ______.
An iron-containing red protein is ______
Which of the following molecules from a zwitter ion?
Which among the following amino acids has the lowest molecular mass?
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 ____________.
In aqueous solution of amino acids mostly exists in, ____________.
The secondary structure of a protein refers to ____________.
Give the differences between the primary and secondary structure of proteins.
Write a short note on peptide bond.
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?
Tertiary structure of protein is stabilised by ______.
The tightly bound non-proteinaceous organic compound in enzyme is ______.
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.
Given below are two statements.
Statement I- Most of the blood proteins are acidic proteins.
Statement II - Derived proteins are not found in nature.
In the light of above statements, Select the correct option given below.
Which from following is an essential amino acid?
The number of amino groups in the amino acids present in amides is ______.
