Which of the Following Parasites Must Be Swallowed Twice by the Human

question 40

Multiple Choice

Which of the following parasites must be swallowed twice by the human host, first as an egg and later as a larva?

• A)Ascaris lumbricoides
• B)Necatur americanus
• C)Taenia saginata
• D)Enterobius vermicularis
• E)Schistosoma mansoni

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Definitions:

Economic Profit

The difference between total revenue and the total opportunity costs (both explicit and implicit) of all resources used.

Productive Efficiency

A situation where goods and services are produced at the lowest possible cost and resources are utilized most effectively.

Allocative Efficiency

A state of resource allocation where goods and services are distributed according to consumer preferences and in a way that maximizes social welfare.

Marginal Cost

The uptick in cost associated with producing an extra unit of a product or service.