Give the pOH range for the isoelectric point of the amphoteric ion of an amino acid
5.5 to 6.3
2.5 to 5.0
7.7 to 8.5
9.0 to 10.7
Which of the following is a trisaccharide?
Stachyrose
Sucrose
Raffinose
Ribose
Glucose and mannose are
epimers
anomers
ketohexoses
disaccharide
What is nature of glucose - glucose linkage in starch that makes its so susceptible to acid hydrolysis?
Starch is hemiacetal
Starch is acetal
Starch is polymer
Starch contains only few molecules of glucose
In an alkaline medium, glycine predominantly exists as/in/an
cation
anion
Zwitter on
covalent form
Glucose contains in addition to aldehyde group
one secondary - OH and four primary - OH groups.
One primary - OH and four secondary - OH groups
two primary - OH and three secondary - OH groups
three primary - OH and two secondary - OH groups
Hydrolysis of sucrose is called
inversion
esterification
hydration
saponification
The structural feature that distinguishes proline from other amino acids are
It is a secondary amine
It contains an anhydride group
It is a tretiary amine
It exists as cyclic amide
There are 20 naturally occurring amino acids. The maximum number of tripeptides that can be obtained
6470
7465
5360
8000
Stachyose is a
Monosaccharide
triaccharide
tetrasaccharide
