The largest component of life among the options provided is Cell.
To clarify the hierarchy:
- Atoms are the basic units of matter and the smallest components.
- Molecules are made up of two or more atoms.
- Organelles are structures within cells that perform specific functions.
- Cells are the basic units of life that can function independently and can contain multiple organelles.
So, in order from smallest to largest, it is: Atom < Molecule < Organelle < Cell.