Question

Living things are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform. Which of the following lists these levels in the correct order of organization from the simplest to the most complex?
A cells, tissues, organs, organ systems, organisms
B organisms, organ systems, organs, tissues, cells
C tissues, cells, organs, organisms, organ systems
D organs, organ systems, organisms, cells, tissues

Answer 1

A is your answer
Explanation: cells are the basic unit of life, and all living things, so it has to start with them.