Question

arrange the following from the most complex to the simplest: 1. epithelial tissue 2. endocrine system 3. lung 4. mitochondria 5. oxygen molecule 6. osteocyte (bone cell) 2, 3, 1, 6, 4, 5 4, 5, 6, 1, 2, 3 4, 5, 6, 1, 3, 2 2, 3, 6, 1, 5, 4 5, 4, 1, 6, 2, 3

Explanation:

In biological organization, the smallest unit is the molecule (oxygen molecule). Then comes the organelle (mitochondria), followed by the cell (osteocyte). Tissues (epithelial tissue) are made up of cells. Organs (lung) are composed of different tissues. Organ - systems (endocrine system) are made up of organs. So the order from smallest to largest is oxygen molecule, mitochondria, osteocyte, epithelial tissue, lung, endocrine system.

Answer:

4, 5, 6, 1, 3, 2