Download App

Biomolecules — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules2 Marks
Question
Protein found in a biological system with a unique three-dimensional structure and biological activity is called a native protein. When a protein in its native form, is subjected to a physical change like change in temperature or a chemical change like, change in pH, denaturation of protein takes place. Explain the cause.
✓

Answer

Protein found in a biological system with a unique three-dimensional structure and biological activity is called a native protein. When a protein in its native form, is subjected to physical change like change in temperature or chemical change like change in pH, the hydrogen bonds are disturbed. Due to this, Globules unfold and helix gets uncoiled and protein loses its biological activity. This is called denaturation of protein.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Biomolecules→Biomolecules — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which one in the following pairs undergoes $S_N1$ substitution reaction faster and why?
→
  1. Which alkyl halide from the following pair is chiral and undergoes faster $S_N2$ reaction?
  1. Out of $S_N1$ and $S_N2,$ which reaction occurs with
  1. Inversion of configuration.
  2. Racemisation.
→
Explain the observed $K_b$ order:
$Et_2NH > Et_3N > EtNH_2$ in aqueous solution.
→
Explain preparation of haloarene compounds from hydrocarbons.
→
Write the reaction of $t-$butyl methyl ether with conc. $HI$ and also explain its mechanism.
→
The vapour pressure of pure benzene at a certain temperature is $0.850 \ bar.$ A non$-$volatile, non$-$electrolyte solid weighing $0.5 \ g$ when added to $39.0 \ g$ of benzene $($molar mass $78\  g \ mol^{-1}). $Vapour pressure of the solution, then, is $0.845 \ bar.$ What is the molar mass of the solid substance?
→
Define molal elevation constant or ebullioscopic constant.
→
Define native state in reference to protein.
→
Give the structures of A, B and C in the following reactions:$\text{C}_6\text{H}_5\text{N}_2\text{Cl}\xrightarrow{\text{CuCN}\ \ }\text{A}\xrightarrow{\text{H}_2\text{O/H}^+\ \ }\text{B}\xrightarrow{\text{NH}_3;\Delta\ \ \ }\text{C}$
→
Explain the fact that in aryl alkyl ethers (i) the alkoxy group activates the benzene ring towards electrophilic substitution and (ii) it directs the incoming substituents to ortho and para positions in benzene ring.
→