All Naturally Occurring Amino Acids

question 5

Multiple Choice

All naturally occurring amino acids:

• A)Have more than one α-carbon atom.
• B)Are uncharged at a pH of 7.
• C)Can only have two pKs.
• D)Are chiral, except glycine.
• E)Occur in nature mainly or exclusively in the optically active D-form.

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Definitions:

Refraction Process

The bending of a wave when it enters a medium where its speed is different, commonly used in the context of light or sound waves.

Age-related Macular Degeneration

A medical condition that results in blurred or no vision in the center of the visual field due to damage to the macula of the retina, associated with aging.

Vitamin B

A group of water-soluble vitamins that play important roles in cell metabolism and the health of the nervous system.

UV Light

Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, capable of producing a suntan or sunburn on human skin.