Which one of the following when added to a culture of non-encapsulated pneumococci derived from a type 1 strain will result in biosynthesis of type 3 polysaccharide?
a. Bacteriophage specific for type 3 strain
b. DNA extracted from virulent type 3 strain
c. Killed rough mutants from type 3 strain
d. Specific opsonin against type 3 strain
e. Type 3 polysaccharide
instantknowledge Answered question August 14, 2024
b. DNA extracted from virulent type 3 strain
Adding DNA from a virulent type 3 strain to non-encapsulated pneumococci can transfer genetic information, enabling the synthesis of the type 3 polysaccharide.
instantknowledge Answered question August 14, 2024