Which of the following is not true of the cell theory? a) all living things are composed of cells and cells can only come from other cells. b) the cell theory is based on the work from many scientists and our knowledge has increased with technological advances c) cells are the basic unit of structure and function in living things d) all cells are composed of a membrane bound nucleus which contains genetic e) information

Option (d).

Explanation:

Cell theory states that all organisms are made of the cell. Cells acts as the functional and structural unit of the organism. The cell theory was proposed by Scheldien and Schwann.

The new organism arise from the pre existing orgainsms in the cell theory. The cell theory never states that all living organism contains the membrane bound nucleus. The prokaryotes lacks the membrane bound nucleus and follows all the rule of cell theory.

Thus, the correct answer is option (d).

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.