Differentiate between globular and fibrous proteins.
(N/A)
| Fibrous protein | Globular protein |
|---|---|
| $1.$ It is a fibre-like structure formed by the polypeptide chain. These proteins are held together by strong hydrogen and disulphide bonds. | $1.$ The polypeptide chain in this protein is folded around itself,giving rise to a spherical structure. |
| $2.$ It is usually insoluble in water. | $2.$ It is usually soluble in water. |
| $3.$ Fibrous proteins are usually used for structural purposes. For example,keratin is present in nails and hair; collagen in tendons; and myosin in muscles. | $3.$ All enzymes are globular proteins. Some hormones such as insulin are also globular proteins. |
Explore More
Similar Questions
How many of the given compounds will give a positive Biuret test?
Glycine,Glycylalanine,Tripeptide,Biuret.
Glycine,Glycylalanine,Tripeptide,Biuret.
Which of the following statements is incorrect regarding the denaturation of proteins?
Medium
View Solution$1.78 \ g$ of an optically active $L$-amino acid $(A)$ is treated with $NaNO_{2} / HCl$ at $0^{\circ}C$. $448 \ cm^{3}$ of nitrogen at $STP$ is evolved. $A$ sample of protein has $0.25 \%$ of this amino acid by mass. The molar mass of the protein is
The substituents $R_1$ and $R_2$ for nine peptides are listed in the table given below. How many of these peptides are positively charged at $pH = 7.0$?
Peptide $R_1$ $R_2$ $I$ $H$ $H$ $II$ $H$ $CH_3$ $III$ $CH_2COOH$ $H$ $IV$ $CH_2CONH_2$ $(CH_2)_4NH_2$ $V$ $CH_2CONH_2$ $CH_2CONH_2$ $VI$ $(CH_2)_4NH_2$ $(CH_2)_4NH_2$ $VII$ $CH_2COOH$ $CH_2CONH_2$ $VIII$ $CH_2OH$ $(CH_2)_4NH_2$ $IX$ $(CH_2)_4NH_2$ $CH_3$
| Peptide | $R_1$ | $R_2$ |
|---|---|---|
| $I$ | $H$ | $H$ |
| $II$ | $H$ | $CH_3$ |
| $III$ | $CH_2COOH$ | $H$ |
| $IV$ | $CH_2CONH_2$ | $(CH_2)_4NH_2$ |
| $V$ | $CH_2CONH_2$ | $CH_2CONH_2$ |
| $VI$ | $(CH_2)_4NH_2$ | $(CH_2)_4NH_2$ |
| $VII$ | $CH_2COOH$ | $CH_2CONH_2$ |
| $VIII$ | $CH_2OH$ | $(CH_2)_4NH_2$ |
| $IX$ | $(CH_2)_4NH_2$ | $CH_3$ |
Amino acids containing a heterocyclic ring are:
$(i)$ Histidine
$(ii)$ Valine
$(iii)$ Arginine
$(iv)$ Proline
$(i)$ Histidine
$(ii)$ Valine
$(iii)$ Arginine
$(iv)$ Proline
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo