Because of the Complexity of the Schistosoma Life Cycle, There

question 56

Multiple Choice

Because of the complexity of the Schistosoma life cycle, there are several parts of the cycle that could be disrupted to halt the spread of the disease.Which of the following proposals is not likely to succeed in decreasing the prevalence of schistosomiasis?

• A)Apply chemical molluscicides (chemicals targeted to molluscs like snails) to bodies of fresh water.
• B)Monitor water bodies to detect the presence of infectious miracidia and enforce no bathing rules when they are present.
• C)Identify a surface protein on Schistosoma miracidia that the immune system can recognize and create a vaccine using that antigen.
• D)Install sanitary sewage treatment facilities to prevent the dispersal of eggs present in urine and feces.

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Definitions:

Schema

Cognitive structures or frameworks that help organize and interpret information, forming the basis of knowledge and understanding.

Preoperational

A stage in Piaget's theory of cognitive development, during which a child from about 2 to 7 years old begins to engage in symbolic play but does not yet understand concrete logic.

Formal Operational

The final stage of cognitive development (as per Jean Piaget's theory), characterized by the ability to think abstractly, logically, and systematically.

Concrete Operational

A stage in Piaget's theory of cognitive development where children (around ages 7 to 12) gain the ability to think logically about concrete and specific objects and events.