FFA Veterinary Science CDE Practice Test

Which of the following is an example of a source where animal protein could come from?

1. Cottonseed

2. Legumes

3. Milk

4. Soybeans

The correct answer is: Milk

Milk is an excellent example of a source from which animal protein can be derived. It is produced by mammals, primarily cows, goats, and sheep, and is rich in high-quality protein, which is essential for growth, development, and repair of tissues in the body. Animal protein, such as that found in milk, is considered complete because it contains all the essential amino acids needed by the human body. In contrast, cottonseed, legumes, and soybeans are plant-based sources. While legumes and soybeans provide protein, they are considered incomplete because they may lack one or more essential amino acids, although they are excellent sources of plant protein. Cottonseed does not offer significant protein compared to the other sources listed and is primarily known for its oil content. Thus, the primary distinction lies in the origin of the protein, with milk being the clear example of an animal protein source.