Final answer:
The specific proteins present in blood plasma include albumin, globulins, and fibrinogen. Approximately 7 percent of the volume of plasma is composed of proteins.
Step-by-step explanation:
The specific proteins present in blood plasma include albumin, globulins, and fibrinogen. Albumin is the most abundant plasma protein and is responsible for holding water inside the blood vessels and maintaining blood volume and pressure. Globulins transport iron, lipids, and vitamins, and also play a role in immunity. Fibrinogen is involved in blood clotting. Approximately 7 percent of the volume of plasma is composed of proteins.