Protein Structure What are the levels of protein structure and what role do functional groups play? Why? Proteins accomplish many cellular tasks such as facilitating chemical reactions, providing structure, and carrying information from one cell to another. How a protein chain coils up and folds determines its three-dimensional shape. Its shape will,

- The four levels of protein structures are: Primary, Secondary, Tertiary and Quatenary

- Functional groups play important roles by influencing the characteristics of the molecules they compose and the chemical reactions the molecules undergo.

Explanation:

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.

carbon atoms, hydrogen, oxygen, and nitrogen.