Q11Written answer
Glycogen is a homopolymer made of
a. Glucose units
b. Galactose units
c. Ribose units
d. Aminoacids
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Worked solution
Option (a) is the answer.
NCERT Exemplar · Class 11 · Biology
Chapter 9: Biomolecules
Practice each question, then open the answer or worked solution.
MULTIPLE CHOICE QUESTIONS
14 questionsQ12Written answer
The number of ‘ends’ in a glycogen molecule would be
a. Equal to the number of branches plus one
b. Equal to the number of branch points
c. One
d. Two, one on the left side and another on the right side
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Option (d) is the answer.
Q13Written answer
The primary structure of a protein molecule has
a. Two ends
b. One end
c. Three ends
d. No ends
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Worked solution
Option (a) is the answer.
Q14Written answer
Enzymes are biocatalysts. They catalyse biochemical reactions. In general,
they reduce the activation energy of reactions. Many Physico-chemical
processes are enzyme-mediated. Which of the following reactions is not
enzyme-mediated in the biological system?
a. Dissolving CO2 in water
b. Untwining the two strands of DNA
c. Hydrolysis of sucrose
d. Formation of peptide bond
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Worked solution
Option (a) is the answer.