Structure and Properties of Amino Acids – Section 1

6. Molecules that bear charged groups of opposite polarity are known as

A. zwitterions
B. ambions
C. ion conversion
D. amphions

Correct Answer: A. zwitterions

7. What is the product of the catabolic breakdown of Arginine?

A. Alpha-ketoglutarate
B. Fumarate
C. Oxaloacetate
D. Succinate

Correct Answer: A. Alpha-ketoglutarate

8. Which amino acids would most likely reside in the membrane-anchoring domain of a membrane embedded protein?

A. Isoleucine, valine and phenylalanine
B. Phenylalanine, valine, and aspartate
C. Leucine, threonine, and lysine
D. Lysine, arginine and histidine

Correct Answer: A. Isoleucine, valine and phenylalanine

9. An essential amino acid is one that

A. is essentially easy to synthesize
B. is essential to flagella motion
C. the body cannot synthesize
D. the body can synthesize under essential conditions

Correct Answer: C. the body cannot synthesize

10. D-Alanine and L-Alanine are technically known as

A. anomers
B. enantiomers
C. epimers
D. polymer

Correct Answer: B. enantiomers

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