Supplements

Try again. Whey protein isolate, calcium caseinate, and soy protein isolate are all natural substances.

Good job. Whey, casein, and soy proteins are derived from foods like milk or soybeans. Whey proteins have a reputation among body builders as being better than casein. Both proteins are derived from milk and there are differences between them, however, there is no evidence at this time that consumption of whey protein increases muscle size or strength to a greater degree than casein does.

Lars has another question for you.

Try this question again. Protein supplements don't contain genetically altered strands of protein.

Try this question again. Amino acids are biologically active compounds.