What component of blood is known as the colorless fluid that carries cells and nutrients?

The colorless fluid in blood that carries cells, nutrients, hormones, and waste products is plasma. Plasma makes up about 55% of total blood volume, and it serves as the medium for transporting various substances throughout the body. It is primarily composed of water, but it also contains electrolytes, proteins, nutrients, and waste products, all of which are essential for maintaining homeostasis and supporting cellular functions.

Reticulocytes are immature red blood cells and play a role in erythropoiesis but do not refer to the fluid component of blood. Hemoglobin is a protein found within red blood cells that binds and transports oxygen but is not the fluid itself. Platelets are small cell fragments involved in blood clotting and also do not represent the fluid medium in which blood components are suspended.