There are four steps in bacterial conjugation. the second step is missing in this list.
1. special sex pilus connects two cells.
2.
3. each cell makes a complementary dna strand.
4. the cells separate.
which is the missing step for the process of conjugation described?
a. two new, identical cells are produced.
b. the cell membrane elongates and pinches off.
c. some dna moves from one cell to another.
d. a dna molecule attaches to the cell membrane.

c.Some DNA moves from one cell to another.

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.