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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Explain denaturation of proteins.

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प्रश्न

Explain denaturation of proteins.

टीपा लिहा
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उत्तर

  1. Denaturation is the process by which the molecular shape of protein changes without breaking the amide/peptide bonds that form the primary structure.
  2. High temperature, acid, base and even agitation can disrupt the noncovalent interactions responsible for a specific shape of the protein. This is referred to as the denaturation of proteins.
  3. Denaturation results in disturbing the secondary, tertiary, or quaternary structure of the protein. This causes a change in the properties of protein and the biological activity is often lost.
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पाठ 14: Biomolecules - Short Answer Questions (Type-I)

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

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.


Draw a neat diagram for the following:

Enzyme catalysis


The optically inactive α-amino acid among the following is _____________


Complete the following reaction.

\[\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] ?}\]


Define peptide bond.


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 ______


Pyrimidines are ______.


Purine and pyrimidine bases are placed regularly along the DNA molecules at a distance of ______


Read the following statements and select the correct option.

  1. In quaternary structure, the peptide chains are much looped, twisted, and folded back on themselves due to formation of hydrogen bonds.
  2. When a protein has more than two polypeptide subunits their arrangement in space is called secondary structure.

Identify 'P' and 'Q' in the following table.

Proteins Role
immunoglobulin P
Q Blood clotting

Choose the WRONG statement from the following.


Which of the following contains keratin?


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.


Which among the following amino acids has lowest molar mass?


For the conversion of oxygen to ozone in the atmosphere, nitric oxide in gaseous phase acts as ______.


Which of the following is not a broad spectrum antibiotics?


The enzyme which converts maltose to glucose is ______.


Which of the following amino acid is an essential amino acid?


Which of the following is the simplest amino acid?


The basic amino acid is ____________.


The molecular weight of hemoglobin is ______ Daltons.


The number of proteins in an average human cell is over ______.


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 ______.


An iron-containing red 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 of the following molecules from a zwitter ion?


Which among the following is a globular protein?


In a protein, various amino acids linked together by ____________.


Among the following the achiral amino acid is:


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 the Zwitter ion structure of alanine.


Define enzymes.


Which of the following amino acid is basic in nature?


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?


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 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 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. 


Write a short note on peptide bond.


Write the Zwitter ion structure of alanine.


Which from following is an essential amino acid?


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 ______.


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