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: -1 The Cell: a basic unit of life In the current conditions on Earth, both on land and in water, life can only exist within the confines of a membrane-bound vesicle called a cell. Cells come in different shapes and sizes. Cells can exist as single cell organisms or as units within multicellular creatures.

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.