What is the surface area of a cell? A. the amount of DNA contained inside the cell
B. the amount of waste leaving the cell
C. the amount of workable space that the cell has
available for exchange
D. how many nutrients are needed in the cell

C.

Explanation:

Here, surface area is the area of the outside of the cell, called the plasma membrane. The volume is how much space is inside the cell. The ratio is the surface area divided by the volume. This indicates how much surface area is available compared to how big the cell is.

C. the amount of workable space that the cell has available for exchange.

Explanation:

The surface area of a cell is its plasma membrane, and it is where nutrients and wastes are exchanged.

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.