AP BIOLOGY

Detailed explanation-1: -All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms. The activity of an organism depends on the total activity of independent cells. Energy flow (metabolism and biochemistry) occurs within cells.

Detailed explanation-2: -All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

Detailed explanation-3: -Rudolf Virchow, a German pathologist (1821–1902), famously wrote “omnis cellula e cellula”-all cells come from other cells-meaning that spontaneous generation of living things from inanimate matter does not occur over periods as short as our lifetimes.

Detailed explanation-4: -As Rudolph Virchow said previously in 1858, omnis cellula e cellula, which is Latin for “all cells arise from other cells."

Detailed explanation-5: -Two cells are formed from one cell through the process of cell division. In cell division, the DNA within a cell is replicated. The two copies of the DNA are then separated into two different cell nuclei. The cell then splits into two pieces, each piece containing its own set of DNA.