1. In his transformation experiments, what did Griffith observe? a. Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form b. Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic c. Mutant mice were resistant to bacterial infections. d. Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains
Pathogenicity
Infection and Transmission
The infections are generated by the pathogenic organisms present in the environment. They maintain the capacity to invade a host body and establish colonies. A disease caused by such infectious agents is called a communicable disease or transmissible disease. These diseases spread through diverse means including blood, food, water, air, or vectors.
1. In his transformation experiments, what did Griffith observe?
| a. |
Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form |
|
| b. |
Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic |
|
| c. |
Mutant mice were resistant to bacterial infections. |
|
| d. |
Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains |
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