Short Answer TypeThe two samples of DNA, A and B have melting temperatures 340 and 350K respectively. Draw conclusion from this data regarding their base content.
What are polysaccharides? Name one of them. How is it important to us?
Polysaccharides are carbohydrates which on hydrolysis gives hundreds or even thousands of monosaccharides units. Cellulose is an example of polysaccharide.
Cellulose is an example of polysaccharide. Cellulose is important to us in the following ways:
(i) It is used in the manufacture of rayon and gun cotton (explosive).
(ii) It is used in the manufacture of cellotape and cellophone paper.
(iii) It is used in the manufacture of nitrocellulose (used as rocket propellant).
How will you show the presence of,
(i) primary alcoholic group.
(ii) Six carbon atoms in a straight chain in glucose.
A tipeptide on complete hydrolysis give glycine, alanine and phenyl alanine. Using three letter symbols, write down the possible sequences of the tripeptide.
If two amino acids: alanine and phenyl alanine react together, how many possible dipeptides can be formed? Write down the structures and names of each one. Also, write their names using three and one letter abbreviation for each amino acids.
Which bonds in the backbone of a peptide can rotate freely and which cannot? Give reasons.
Name the purine and pyrimidine bases present in DNA and RNA. Give the structure of any one of the pyrimidine base.
Switch
