Peptidoglycan Forms Sheets That Stiffen the Cell Walls of Bacteria

question 25

Multiple Choice

Peptidoglycan forms sheets that stiffen the cell walls of bacteria. How is the formation of sheets possible?

• A) The polysaccharides in peptidoglycan are highly branched and form a network.
• B) The glycosidic linkages between monosaccharides in peptidoglycan are extraordinarily strong.
• C) Individual strands are joined by peptide bonds, a type of covalent bond.
• D) The polysaccharides in peptidoglycan form helical structures, as in cellulose.

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Definitions:

Parasympathetic Fibers

Nerve fibers of the parasympathetic nervous system that regulate body functions, promoting rest and digestion.

Hypoglossal Nerve

The twelfth cranial nerve responsible for motor control of the tongue, essential for swallowing and speech.

Sympathetic Nerves

Part of the autonomic nervous system that prepares the body for "fight or flight" response, regulating heart rate, blood pressure, and energy mobilization.

Parasympathetic Nerves

Nerves of the autonomic nervous system that conserve energy by slowing the heart rate and increasing intestinal and gland activity.