Which Part of the Body Does NOT Meet the External

question 58

Multiple Choice

Which part of the body does NOT meet the external environment?

• A) skin
• B) mouth
• C) gastrointestinal tract
• D) blood
• E) genitourinary tract

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Definitions:

Achiral Molecule

A molecule that is superimposable on its mirror image, lacking chirality or a distinct handedness.

Optical Activity

The ability of a substance to rotate the plane of polarization of polarized light, a property observed in chiral molecules.

Superimposable

Describes when two objects can be placed on top of each other, matching perfectly in shape and size.

Meso Form

A type of stereoisomer with multiple chiral centers that is superimposable on its mirror image due to a plane of symmetry, rendering it achiral.