Question

Which of the following statements is true of low-quality proteins ?

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A. They contain an equal balance of essential amino acids.
B. They don't provide all of the essential amino acids.
C. They provide all of the essential amino acids.
D. They contain an unequal balance of all of the essential amino acids.

Answer 1

B.

Low quality proteins which are typical of plant origin, lack one or more essential amino acids. Ex. (Corn is missing Lysine and Beans are missing Tryptophan).

Step-by-step explanation:

A. is wrong because a low quality protein (usually of plant origin) lacks one or more essential amino acids,

C & D are wrong for the same reason. There are missing amino acids