The human body does not produce
1. DNA
2. vitamins
3. hormones
4. enzymes
Glucose molecule reacts with 'X' number of molecules of phenylhydrazine to yield
osazone. The value of 'X' is
1. four
2. one
3. two
4. three
RNA and DNA are chiral molecules, their chirality is due to
1. L-sugar component
2. chiral bases
3. chiral phosphate ester units
4. D-sugar-component
The couplings between base units of DNA is through :
1. | Hydrogen bonding | 2. | Electrostatic bonding |
3. | Covalent bonding | 4. | Van der waal's forces |
a-D-(+)-glucose and b-D-(+)-glucose are
1. | Anomers | 2. | Epimers |
3. | Enantiomers | 4. | Geometrical isomers |
Among the following non-reducing sugar is :
(1) Glucose
(2) Fructose
(3) Sucrose
(4) Galactose
When glucose is reacted with phenyl hydrazine then osazone is formed. In this reaction how many phenyl hydrazine molecules are used ?
1. 1
2. 2
3. 3
4. 4
Sucrose on treatment with conc. HCl produces:-
(1) Glucose
(2) Fructose
(3) Glucose + Fructose
(4) Maltose
The above process in which a and b form remain in equilibrium with acyclic form and a change in optical rotation is observed which is called as–
(1) Mutarotation
(2) Epimerisation
(3) Condensation
(4) Inversion
What will be product when glycine, is heated–
(1) | |
(2) | |
(3) | |
(4) |