मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

In the process of denaturation, there is NO change in the structure following protein.

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प्रश्न

In the process of denaturation, there is NO change in the structure following protein.

पर्याय

  • primary

  • secondary

  • tertiary

  • quaternary

MCQ
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उत्तर

primary

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पाठ 14: Biomolecules - Multiple Choice Questions

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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.


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 ____________


Define peptide bond.


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.


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 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.


Which of the following contains keratin?


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 : ____________.


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 ______.


β-pleated sheets of polypeptide chains are present in ______.


The side chain R in cysteine is ____________.


Which of the following is not a broad spectrum antibiotics?


The enzyme which converts maltose to glucose is ______.


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 ______.


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 of the following amino acids has –CH2OH group in its side chain?


Which among the following is basic amino acid?


The central dogma of molecular genetics states that the genetic information flows from:


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 amino acids is achiral?


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.


Define enzymes.


Denaturation of proteins leads to loss of their biological activity by:


Which of the following amino acid is basic in nature?


The amino acid, which is basic in nature is ______.


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 ______.


The tightly bound non-proteinaceous organic compound in enzyme is ______.


Write a short note on peptide bond.


Write a short note on peptide bond.


Define the term Protein.


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 a short note on peptide bond.


Write the Zwitter ion structure of alanine.


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 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.


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