What Is the Primary Determinant of Virulence in Streptococcus Pneumoniae

question 24

Multiple Choice

What is the primary determinant of virulence in Streptococcus pneumoniae?

• A) the ability to lyse red blood cells
• B) the presence of a particular Lancefield antigen
• C) strain-specific teichoic acids in its cell wall
• D) the presence of a polysaccharide capsule
• E) the production of pneumolysin

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Definitions:

Malthusian Prediction

The theory proposed by Thomas Malthus that population growth will outpace agricultural production, leading to widespread poverty and famine.

Population Growth

The increase in the number of individuals in a population, usually expressed as an annual rate.

Standards Of Living

The level of wealth, comfort, material goods, and necessities available to a person, community, or nation, indicating the quality of life.

Demographic Transition

A model that describes the change from high birth and death rates to low birth and death rates as a country develops from a pre-industrial to an industrialized economic system.