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.
As the largest protein in the body, collagen is a chain of over 1500 amino acids. Collagen is the connective tissue for almost all our structures, including. heart â¦â¦â¦â¦â¦ lungs â¦â¦â¦. arteries â¦â¦â¦ discs â¦â¦â¦.0 blood cells. skin â¦â¦â¦â¦â¦. muscles â¦â¦. bones â¦â¦â¦..n fact, collagen is the largest and most abundant protein in the body, making up about 65% of our total protein. Proteins are made of amino acids, such as glycine, proline, arginine, hydroxyproline, which are amino acids that exist in collagen in varying proportions, depending upon the source.