How Can Incomplete Protein Foods Be Combined to Form a Complete Protein

When we compare the essential amino acid composition of an incomplete food, we find that one or more of these amino acids is in a limited quantity relative to our protein (Figure 6.4). These amino acids are referred to as "limiting amino acids" because our cells' ability to make new protein will be limited to the level in that protein. This is analogous to building a brick wall with alternating rows of red, white and blue bricks. If there are only enough red bricks to build the wall 4 feet tall, that is as tall as the wall could be built even if there are abundances of blue and white bricks.

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