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Important Questions on Biomolecules

MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
The Fischer presentation of D-glucose is given below

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The correct structure(s) of β-L- glucopyranose is(are)
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Write the product when D-glucose reacts with conc. HNO3.
MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Write chemical reactions to show that open structure of D-glucose contains the following :
Aldehyde as carbonyl group
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
What is the carbohydrate containing -CHO group known as?
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
The number of chiral centers in (±)- glucose is
MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides

Sucrose is not:

MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Write chemical reactions to show that open structure of D-glucose contains the following :
Five alcohol groups
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
What are the products obtained on hydrolysis of sucrose?
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
 All monosaccharides__________ Tollens' reagent.
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Sucrose is a disaccharide and a non-reducing sugar.
Reason (R): Sucrose involves glycosidic linkage between C1 of β-glucose and C2 of α-fructose.
Choose the most appropriate answer from the options given below :
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
What is the advantage of storing glucose as glycogen in animals instead of as monomeric glucose?
MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Choose the correct statements from the following:
A) In a polysaccharide chain, the right end is reducing end and the left end is non-reducing end.
B) In a protein, the right end is a first amino acid called N-end, and the left end is called C-terminal.
C) Concanavalin A is a drug used to cure cancer along with vinblastin and curcumin.
D) GLUT-4 enables glucose transport into cells.
MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
What is the action of conc. HI with glucose ?
MEDIUM
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Differentiate between the following :
Amylose and Amylopectin
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Sucrose contains glucose and fructose linked by :
HARD
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides

Define optical activity. How many optical isomers are possible for glucose.

HARD
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Write a note on polysaccharides.
HARD
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Match the following lists.
  List-I   List-II   List-III
(A) Deoxyribose (i) Gums (I) Fatty acids
(B) Lipids (ii) C5H10O4 (II) True macromolecules
(C) Polymeric substances (iii) Trypsin (III) Cellulose
(D) Polypeptides (iv) Glycerol (IV) Carbohydrate

The correct match is:

EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
Which of the following will not produce an aldehyde group at the anomeric carbon in solution?
EASY
Biology>Cell : Structure and Functions>Biomolecules>Polysaccharides
The reaction of concentrated sulphuric acid with carbohydrates C12H22O11 is an example of