'Atom' is related to 'Molecule' as the smaller unit that combines to form the larger unit. In the same way, 'Cell' is related to which larger biological unit formed from it?

Introduction / Context:
The analogy focuses on hierarchical composition. Atoms combine to form molecules. In biology, cells are the basic units of life that build up tissues, organs, and ultimately organisms. The most encompassing larger living unit in the options is “organism.”

Given Data / Assumptions:

• Atom → molecule (chemical hierarchy).
• Cell → organism (biological hierarchy through tissues/organs).

Concept / Approach:
Pick the larger composite that cells ultimately build. While “organ” is also larger than a cell, the question typically targets the complete living entity—organism—paralleling the broader jump from atoms to molecules as a complete discrete unit in chemistry.

Step-by-Step Solution:

Verification / Alternative check:
“Organ” is intermediate; “organism” is the fully living entity, best mirroring molecule as a complete chemical entity composed of atoms.

Why Other Options Are Wrong:

• Matter: Too broad, not a biological hierarchical unit.
• Nucleus: Sub-cellular, smaller than a cell.
• Battery: Unrelated.
• Organ: Intermediate level, not the whole living unit.

Common Pitfalls:
Stopping at an intermediate level (organ) instead of the full composite (organism).

Final Answer:
Organism