A Microbiologist Is Reading a Sputum Culture and Notices Tiny $\beta$

question 10

Multiple Choice

A microbiologist is reading a sputum culture and notices tiny, translucent colonies growing closely around a $\beta$ hemolytic colony on sheep blood agar (SBA) . The colonies are growing in the area where the blood has been hemolyzed. What is the probable identity of the organism that is growing closely to the $\beta$ -hemolytic organism, and why are they growing in the hemolyzed area?

• A) Neisseria spp., because they need the factor X in this area
• B) Haemophilus spp., because they need the factor V in this area
• C) Acinetobacter spp., because they need the factors X and V
• D) Aggregatibacter spp., because they need the factors X and V

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Definitions:

Cultural Personality

The collective psychological traits, behaviors, and characteristics shared by members of a specific culture or society.

Individualistic

Emphasizing the importance or centrality of the individual and his or her rights and independence above all else.

Heritability of Traits

The proportion of variation in traits among individuals in a population that can be attributed to genetic differences.

Genetic Differences

Variations in the genes among individuals or populations, which contribute to the biological diversity.