EASY
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The chemical formula of starch is

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Important Questions on Chemical Constituents of Living Cells

EASY
Identify the substances having glycosidic bond and peptide bond, respectively in their structure.
HARD
Two tubes labelled 'P' and 'Q' contain foodstuff. Tube 'P' gave a positive test with Benedict's solution while tube 'Q' gave a positive test with nitric acid. Which of the following is correct?
MEDIUM
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.
EASY
What is the advantage of storing glucose as glycogen in animals instead of as monomeric glucose?
EASY
A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C6H12O6 then what is the formula for maltose?
EASY

Assertion (A): Starch can hold iodine molecules whereas cellulose cannot hold iodine molecules.

Reason R: Cellulose forms helical secondary structures whereas starch does not contain complex helices.

The correct answer is:

MEDIUM
Corn is immersed in the boiling water. It is then cooled, the solution becomes sweet. It is due to
EASY
Storing carbohydrates in the form of polysaccharides has which of the following advantages?