Rank these from largest to smallest, bacteria, organelle, cell, atom, virus, protein, molecule

From largest to smallest, the ranking would be:

1. Organelle
2. Cell
3. Bacteria
4. Virus
5. Protein
6. Molecule
7. Atom

To rank these objects from largest to smallest, we need to consider their hierarchical organization.

1. Atom: An atom is the basic unit of matter and is the smallest of the objects listed. Atoms combine to form molecules.

2. Molecule: A molecule consists of two or more atoms bonded together. They can range from simple to complex structures. Some examples of molecules are water (H2O) and glucose (C6H12O6).

3. Protein: Proteins are large molecules formed by chains of amino acids. They play crucial roles in various biological processes. Proteins are generally larger than molecules and are classified as macromolecules.

4. Organelle: Organelles are specialized subunits within a cell that perform specific functions. Examples include the nucleus, mitochondria, and chloroplasts. Organelles are generally larger than molecules and can consist of several molecules and proteins.

5. Virus: Viruses are non-living particles consisting of genetic material (DNA or RNA) enclosed in a protein coat. Viruses are smaller than cells and cannot replicate or carry out metabolic processes without infecting a host cell.

6. Bacteria: Bacteria are single-celled microorganisms and are larger than viruses. They have a cellular structure consisting of DNA or RNA enclosed in a cell membrane and a cell wall.

7. Cell: Cells are the basic structural and functional units of all living organisms. They are larger than bacteria and are composed of various organelles, proteins, molecules, and other structures.

So, the ranking from largest to smallest is: Cell > Bacteria > Virus > Organelle > Protein > Molecule > Atom.