AP BIOLOGY

Detailed explanation-1: -A cell is the most basic unit of life. Anatomically, it is a membrane-bound structure that contains various other organelles which perform specialized functions.

Detailed explanation-2: -A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms.

Detailed explanation-3: -Each cell is a self-sustainable, self-reliant unit that can replicate itself and carry on all the metabolic processes essential for the continuation of life. Each cell of both single and multicellular organisms holds the keys necessary to produce viable offspring.