Question

1. which of the following is the correct order of complexity, going from least to most complex?

organ, tissue, cell, organelle, molecule, atom

atom, molecule, organelle, cell, tissue, organ

molecule, atom, organ, tissue, cell, organelle

organ, tissue, cell, organelle, atom, molecule

Explanation:

In biology, the hierarchy of biological organization starts with the simplest unit. An atom is the basic unit of matter. Atoms combine to form molecules. Molecules make up organelles (sub - cellular structures). Organelles are part of cells. Cells of similar types form tissues. Tissues combine to form organs. So, the order from least to most complex is based on this biological hierarchy.

Answer:

atom, molecule, organelle, cell, tissue, organ