What is the primary function of a monosacchride in the human body

Energy. The monosaccharide is the simplest form of sugar that cannot be further hydrolyzed. They are also the most basic unit of carbohydrates.

Energy is your answer.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.