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प्रश्न
Define α-amino acids.
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उत्तर
α-Amino acids are carboxylic acids having an amino (–NH2) group bonded to the α-carbon, that is, the carbon next to the carboxyl (–COOH) group.
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.
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
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 _____________
The chemical nature of peptide bond in proteins is ____________
Write the number of chiral carbon atoms present in fructose.
Write types of proteins depending upon molecular shape.
Explain denaturation of proteins.
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.
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.
Choose the WRONG statement from the following.
The conjugate acid of \[\ce{CO^2-_3}\] is ____________.
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 : ____________.
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 ______.
The side chain R in cysteine is ____________.
Which of the following is not a broad spectrum antibiotics?
Which of the following amino acid is an essential amino acid?
Which of the following is the simplest amino acid?
The molecular weight of hemoglobin is ______ Daltons.
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 ______.
Identify the side chain –R present in amino acid lysine.
In aqueous solution of amino acids mostly exists in, ____________.
Among the following L-serine is:
The secondary structure of a protein refers to ____________.
Which of the following statement is not correct?
Give the differences between the primary and secondary structure of proteins.
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 ______.
Write a short note on peptide bond.
Write a short note on peptide bond.
Write the Zwitter ion structure of alanine.
Define the term Protein.
Write a short note on peptide bond.
Write the Zwitter ion structure of alanine.
Write a short note on a peptide bond.
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 a short note on peptide bond.
Write the Zwitter ion structure of alanine.
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 ______.
