Answer:
D) All of the above
Explanation:
This is crucial for us understanding biology because cells form the basis of all life. We can have unicellular organisms, like bacteria, like yeasts. [And] cell division, the division of a cell from one, to two, to four, forms the basis of growth and development of all living things.
Answer:
All of the above.
Explanation:
The cell theory is that all organisms are made of cells, cells are the building blocks of organisms, and all cells come from pre-existing cells.