Assertion : In transforming principle, when streptococus pneumoniae (Pneumococcus) bacteria are grown on a culture plate, some produce smooth shiny colonies (S) while other produce rough colonies (R).
Reason : S strain bacteria have a mucous (polysaccharide) coat, while R strain does not.

There are 5 test tubes having a culture medium containing rough colonies of streptococcus pneumoniae. The following substances were added in them. Which of these test tubes will show smooth colonies of streptococcus pneumoniae on incubation for some time? Test tube I: RNA from a heat-killed smooth strain of streptococcus pneumoniae Test tube II: DNA from a heat-killed smooth strain of streptococcus pneumoniae Test tube III: Protein from a heat-killed smooth strain of streptococcus pneumoniae Test tube IV: Carbohydrate from a heat-killed smooth strain of streptococcus pneumoniae Test tube V: Heat killed smooth strain of streptococcus pneumoniae incubated with DNAse enzyme

There are 5 test tubes having a culture medium containing rough colonies of streptococcus pneumoniae. The following substances were added in them. Which of these test tubes will show smooth colonies of streptococcus pneumoniae on incubation for some time? Test tube I: RNA from a heat-killed smooth strain of streptococcus pneumoniae Test tube II: DNA from a heat-killed smooth strain of streptococcus pneumoniae Test tube III: Protein from a heat-killed smooth strain of streptococcus pneumoniae Test tube IV: Carbohydrate from a heat-killed smooth strain of streptococcus pneumoniae Test tube V: Heat killed smooth strain of streptococcus pneumoniae incubated with DNAse enzyme

Assertion : In Griffith's experiment, a mixture of heat-killed virulent bacteria R and live non - virulent bacteria S, lead to the death of mice. Reason : 'Transforming principle' got transferred from heat -killed R strain and made it virulent.

Assertion : In Griffith's experiment, a mixture of heat-killed virulent bacteria R and live non - virulent bacteria S, lead to the death of mice. Reason : 'Transforming principle' got transferred from heat -killed R strain and made it virulent.

Assertion (A): In Griffith's experiment, the dead R strain bacteria was capable of causing the transformation of the live S-strain bacteria. Reason(R): The S-strain is non-virulent strain.