There are slight differences in the meanings of these terms, but they are often used interchangeably. 1  Independent Variable: It implies causality: the independent variable affects the dependent variable. 2  Used predominantly in ANOVA, but often in regression as well. 3  It can be either continuous or categorical.
Protein Quality. Collagen is not a complete protein because it is lacking in the amino acid tryptophan. A Protein Digestibility Corrected Amino Acid Score (PDCAA) of a complete protein is 1.0.ollagen is a protein found in the muscle and connective tissue of animals. Hydrolyzed collagen protein supplements are typically made from the bones and skin of cows, horses or pigs.
(NaturalNews) According to Medical News Today, collagen is one of the most necessary amino acids in the body. About 30 percent of the body's proteins are collagen-based. There are 28 forms of collagen, each responsible for various processes in the body. Although collagen is most famous for its skin-healing benefits, collagen is essential for relieving joint pain as well. Collagen is used to restore elasticity to the joints.