AP BIOLOGY

Detailed explanation-1: -All living things are made up of cells. Cells are the smallest units (or most basic building blocks) of life, and all cells come from preexisting cells through the process of cell division.

Detailed explanation-2: -All cells come from preexisting cells created through the process of cell division.

Detailed explanation-3: -First, each chromosome copies itself, and the duplicates line up at the “equator” of the cell. Then, duplicate copies of each chromosome are pulled toward opposite poles. Finally, the cell splits at the equator, producing two new cells with identical sets of chromosomes.

Detailed explanation-4: -It states that: All living organisms are made up of cells. Cells are the smallest units in a living organism that can perform all the functions of life. Rudolf Virchow in 1858 said “Omnis cellula-e-cellula", which means that all cells arise from the pre-existing cells only.