cell
organ system
according to McGraw-Hill, an organ is more complex, learned from my anatomy homework
The correct relationships from least complex to most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, biosphere.
Cell combines to form an Organ and Organs comprise the Organ System which makes up an ORGANISM. A lung is comprised of MORE than ONE CELL that does complex functions. A lung is not a cell alone, it is composed of more than one cell. Our lungs is an organ that is composed with cells, we cannot directly say that a lung is a cell. :-)
Organ systems are most complex and fragile starting with the atoms. The most complex organ systems is the organism. In between are the molecules, cell, tissue, organ, and organ system.
atoms and molecules --> cell --> tissue --> organ --> organ system --> organism
An organ system is more complex than an organ because it is made up of multiple organs working together to perform a specific function. Organs are individual structures that make up an organ system, each with its own specific role.
Cell, tissue, organ, organ system Atom, molecule, cell, tissue Organ system, tissue, cell, organ Molecule, tissue, organ, organ system The correct order is 2. Atom, molecule, cell, tissue.
Atom, molecule, cell, tissue, organ, organ system, organism
cell tissues organs organ system organism
The level of organization more complex than a system is the organism. The organism is made up of multiple organ systems working together.
The levels of organization from least to most complex are:AtomsMoleculesCellTissueOrganOrgan system