Type S Streptococcus Pneumoniae Bacterium Is Lethal and Will Kill

question 42

Multiple Choice

Type S Streptococcus pneumoniae bacterium is lethal and will kill its host.If heat inactivated the S strain dies and becomes nonlethal.Type R Streptococcus pneumoniae is a nonvirulent strain of bacteria.What would occur if one were to inject both the R strain and heat-killed S strains into a host organism such as the mouse?

• A)The S strain would be transformed into the nonvirulent R strain and kill the host.
• B)The R strain would be transformed into the virulent S strain and kill the host.
• C)The S strain would be transformed into the nonvirulent R strain and not affect the host.
• D)The R strain would be transformed into the virulent S strain and not affect the host.
• E)Neither the S nor the R strain would changE.

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Definitions:

Achiral

A term for molecules that are identical to their mirror images and cannot rotate plane-polarized light.

Amino Acids

Organic compounds used as the building blocks of proteins, containing both an amino group and a carboxylic acid group.

Single Letter Code

The system of representing amino acids or nucleotides using single letter abbreviations to simplify notation in sequences.

Peptide

Short chains of amino acid monomers linked by peptide (amide) bonds, playing crucial roles in biological functions.