Which of the Following Is Not True of Schistosomiasis

question 65

Multiple Choice

Which of the following is not true of schistosomiasis?

• A) Larvae called cercariae can penetrate intact skin through hair follicles.
• B) Freshwater snails are the intermediate host.
• C) Schistosomiasis is caused by blood ?ukes.
• D) Schistosomiasis covers its outer surface with blood proteins to escape detection by the immune system.
• E) Schisotosomiasis cases are beginning to appear in the southern U.S., as climate change brings warming waters to the region.

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Definitions:

Diastereomer

Stereoisomers that are not mirror images of each other, differing in the spatial arrangement of atoms around one or more asymmetric centers.

Achiral

A term describing molecules that are superimposable on their mirror images, indicating they do not possess handedness or chirality.

Asymmetric Carbons

Carbon atoms bonded to four different groups, resulting in chirality and the potential for molecules to exist as enantiomers.

Enantiomers

Molecules that are mirror images of each other but cannot be superimposed, possessing opposite optical activities.