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Multiple Choice
Which plasma component is not present in serum?
A
Electrolytes
B
Globulins
C
Fibrinogen
D
Albumin
Verified step by step guidance
1
Understand the difference between plasma and serum: Plasma is the liquid component of blood that contains water, electrolytes, proteins, and other substances. Serum is the fluid that remains after blood has clotted and the clotting factors have been removed.
Identify the components of plasma: Plasma contains water, electrolytes, proteins (such as albumin, globulins, and fibrinogen), nutrients, hormones, and waste products.
Recognize the process of blood clotting: When blood clots, fibrinogen is converted into fibrin, which forms a mesh that helps in clot formation. This process removes fibrinogen from the liquid component, resulting in serum.
Determine the components present in serum: Serum contains electrolytes, albumin, and globulins, but lacks fibrinogen because it has been used up in the clotting process.
Conclude which component is not present in serum: Since fibrinogen is used in the clotting process and is absent in serum, it is the plasma component not present in serum.