The Villi of the Small Intestine

question 13

Multiple Choice

The villi of the small intestine

• A) provide an enormous surface area that facilitates absorption.
• B) store fat-soluble vitamins.
• C) continuously push food through the small intestine to the colon.
• D) inactivate enzymes consumed with food.

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Definitions:

Axial Positions

Locations on a molecule, especially in cyclic compounds like cyclohexane, that are perpendicular to the plane of the ring, typically leading to higher steric strain.

Cis-1,3-Dimethylcyclohexane

An isomer of dimethylcyclohexane where the two methyl groups are located on the same side of the cyclohexane ring.

Hydrogen Atoms

The simplest type of atom, consisting of one proton and one electron, fundamental to the structure of organic molecules.

Cis-1-T-Butyl-4-Methylcyclohexane

A specific isomer of a chemical compound characterized by the cis configuration of 1-tert-butyl and 4-methyl groups on a cyclohexane ring.