• AglaSem
  • Schools
  • Admission
  • Career
  • CutOffs
  • News
  • Hindi
  • Mock Test
  • Docs
  • ATSE
aglasem
  • CBSE
    • Date Sheet
    • Question Papers
    • Sample Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Result
  • NCERT
    • NCERT Books
    • NCERT Solutions
    • NCERT Exempler
    • Teaching Material
  • Mock Tests
  • Study Material
    • Notes
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • HC Verma Solutions
    • Teaching Material
    • Classes Wise Resources
    • Videos
    • Resources
No Result
View All Result
aglasem
  • CBSE
    • Date Sheet
    • Question Papers
    • Sample Papers
  • ICSE / ISC
  • State Boards
    • Date Sheet
    • Result
  • NCERT
    • NCERT Books
    • NCERT Solutions
    • NCERT Exempler
    • Teaching Material
  • Mock Tests
  • Study Material
    • Notes
  • Olympiads
    • ATSE
    • KVPY
    • NTSE
    • NMMS
  • School Admission
  • Entrance Exams
    • JEE Main
    • NEET
    • CLAT
  • Students Guide
    • Careers Opportunities
    • Courses & Career
    • Courses after 12th
  • Others
    • HC Verma Solutions
    • Teaching Material
    • Classes Wise Resources
    • Videos
    • Resources
No Result
View All Result
aglasem
No Result
View All Result

CBSE Class 12 Chemistry Notes: Biomolecules – Tests of protein

by Neepur Garg
April 22, 2019
in 12th Class, Class Notes
Reading Time: 2min read
0
0
SHARES
0
VIEWS
Share on FacebookShare on Twitter

Biuret test 

(i) On adding a dilute of copper sulphite to alkaline solution of protein, a violet colour is developed.

(ii) This test is due to the presence of peptide   linkage

Millon’s test

(a)  Millon’s reagent consists of mercury dissolved in nitric acid (forming a mixture of mercuric & mercurous nitrates).

(b)  When millon’s reagent is added to a protein, a white ppt is formed, which turn brick red on heating.

(c)  This test is given by protein which yield tyrosine on hydrolysis (due to the presence of phenolic group).

Nihydrin test

(i)   This test is given by all proteins.

(ii) When protein is boiled with a dilute solution of ninhydrin, a violet colour is produced.

Uses of Proteins

(i) Protein constitute as essential part of our food, meat, eggs, fish, cheese provide protein to human beings.

(ii) Casein (a milk protein) is used in the manufacture of artificial wool & silk.

(iii) Amino acid needed for medicinal use & feeding experiment, are prepared by hydrolysis of proteins.

(iv)  Gelatin is used in desserts, salad’s, candies bakery goods etc.

(v)  Leather is obtained by tanning the protein of animal hides.

(vi)  Hemoglobin present in blood is responsible for carrying oxygen and CO2.

(vii) Hormones control various process.

(viii) Enzymes are the proteins produces by living system & catalyse specific biological reaction.

Example:

Ureases (Urea -> CO2 + NH2)

Pepsin (Protein -> Amino acid)

Trypsin (Protein -> Amino acid)

Carbonic anhydride (H2CO3 -> H2O + CO2)

Nuclease (RNA, DNA -> Nucleotides)

« Click Here for Previous Topic Click Here for Next Topic »

CBSE Class 12 Chemistry Biomolecules All Topic Notes CBSE Class 12 Chemistry All Chapters Notes

To get fastest exam alerts and government job alerts in India, join our Telegram channel.

Tags: CBSE NotesClass 12 NotesClass 12thFree Notes

Neepur Garg

Related Posts

12th Class

Maharashtra Board HSC Time Table 2021 – Check for 12th Commerce, Arts, Science

KVPY 2020
11th Class

KVPY 2020 – Kishore Vaigyanik Protsahan Yojana Tentative Answer Key (Out), Result

10th Class

IARCS Olympiads: Indian Association for Research in Computing Science

12th Class

MP Board Question Paper Class 12th 2020 for Travel and Tourism

Next Post

CBSE Class 12 Chemistry Notes: Biomolecules - Isoelectric Point

Discussion about this post

Registration Open!!

  • CUCET Application 2021 (Phase-1)
  • UPES Dehradun Application 2021
  • Indian Talent Olympiad Click Here
    Indian Talent Olympiad - Apply Now!!
  • NIIT University Admission 2021

Class Wise Study Material

  • Class 1
  • Class 2
  • Class 3
  • Class 4
  • Class 5
  • Class 6
  • Class 7
  • Class 8
  • Class 9
  • Class 10
  • Class 11
  • Class 12
  • Disclaimer
  • Terms of Use
  • Privacy Policy
  • Contact

© 2019 aglasem.com

No Result
View All Result
  • CBSE
  • ICSE / ISC
  • State Board
  • NCERT
  • Mock Test
  • Study Material
  • Olympiads
  • Schools Admission
  • Entrance Exams
  • Student Guide
  • HC Verma Solutions
  • Videos

© 2019 aglasem.com

Engineering Exam Forms Click Here