Home
Class 11
BIOLOGY
Find out a qualitative test for proteins...

Find out a qualitative test for proteins, fats and oils, amino acids and test any fruit juice, saliva, sweat and urine for them.

Text Solution

Verified by Experts

(a) Test for protein
Biuret’s test – If Biuret’s reagent is added to protein, then the colour of the reagent changes from light blue to purple.
(b) Test for fats and oils
Grease or solubility test
(c) Test for amino acid
Ninhydrin test – If Ninhydrin reagent is added to the solution, then the colourless solution changes to pink, blue, or purple, depending on the amino acid.
ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NCERT_BIO_XI_C09_E01_013_S01.png" width="80%"gt
ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NCERT_BIO_XI_C09_E01_013_S02.png" width="80%"gt
Promotional Banner

Topper's Solved these Questions

  • BIOLOGICAL CLASSIFICATION

    NCERT BANGLISH|Exercise Questions|12 Videos

  • BODY FLUIDS AND CIRCULATION

    NCERT BANGLISH|Exercise Questions|14 Videos

Similar Questions

Explore conceptually related problems

Find out a qualitative test for proteins, fats or oils and amino acids and test any fruit juice, saliva, sweat an urine for them.

First scientist to find out amino acid sequence of a protein was

What is Essential Amino Acid? Name them. Write any three functions of protein in human body.

Find out the correct answer out of the options given against each question : In any testing problem, our main objective is-

Go through the following statements: (i) a typical nucleosome contains 400 bp of DNA helix. (ii) The positively charged DNA is wrapped around the negatively charged histoned octamer to form a structure called nucleosome. (iii) Histones are rich in the basic amino acid residues asparagine ad valine (iv) The packaging of chromatin at higher level requires additional set of proteins that collectively are referred to as nonhistone chromosomal proteins. Find out the wrong statements:-

Go through the following statements : (i) Lysosomes contain hydrolytic enzymes which are optimally active at the alkaline pH. (ii) A number of proteins synthesised by ribosomes on the endoplasmic reticulum are modified in the cisternae of the Golgi apparatus before they are released from its cis face. (iii) Typically a mitochondrion has a diameter of 0.2-1.0 mu m and length of 1.0 - 4.1 mu m (iv) Elaioplasts store oils and fats. Find out the correct statements