List the major subdivisions or components for each of the four types of compounds—carbohydrates, lipids, proteins, and nucleic acids—within living organisms. for example, fats are one major subdivision of lipids.

Proteins - amino acids.

Lipids - fatty acids, glycerides, steroids  

Carbohydrates - monosaccharides  

Nucleic Acids - bases (A, T, C, G and U)

the correct answer would be 6 feet.

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.