Hello there :)
What I could say though are the following of the function of proteins:
Building Tissues and Muscles. Protein is necessary in building and repairing body tissues. ...
Hormone Production. ...
Enzymes. ...
Immune Function. ...
Energy.
Human forelimbs is used for a variety of functions, such as for eating.
Similarities: They are all made from the same basic anatomical structure classified as homologous structures.
They all have this structure inherited from a common ancestor.
