L-lysine is an essential amino acid and must be supplied in the diet.By comparison,the stereoisomer D-lysine is not biologically active.Why can your body only utilize one form?
A) Since the L form and D form are enantiomers,they will bind together and inhibit utilization of the D form.
B) Since the L form and D form are chiral molecules,they will bind together and inhibit utilization of the D form.
C) Antibodies recognize the D form and destroy it before your body can use it for nutritional purposes.
D) Enzymes can only recognize a single,specific stereoisomer.
Correct Answer:
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