Epidemic Paralytic Polio

question 8

Multiple Choice

Epidemic paralytic polio:

• A) was more likely when newborns were exposed to the virus.
• B) was more likely when exposure was delayed beyond infancy.
• C) was most commonly seen in situations where sanitation was poor.
• D) was eradicated in the United States as routine sanitation became commonplace.
• E) has not been observed since the 19^th century in developed countries.

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Definitions:

Triple Bond

A type of chemical linkage where two atoms share three pairs of electrons, resulting in a bond that is shorter and stronger than those involving only one or two pairs of electrons.

2-Hexyne

An organic compound with the chemical formula C6H10, consisting of a six-carbon chain with a triple bond between the second and third carbon atoms.

Lewis Line Structure

A diagram representing the valence electrons of atoms within a molecule using dots and lines for bonding pairs.

Line Structure

A simplified representation of a chemical structure, using lines to represent chemical bonds and showing the arrangement of atoms within the molecule.