'Atom' is related to 'Molecule' (smaller unit makes a larger unit); in the same way, 'Cell' is related to which larger biological whole? Choose the best structural build-up analogy.

Introduction / Context:
Structural analogies compare smaller building units to the larger entities they compose. Atoms combine to form molecules. Similarly, in biology, the next coherent whole formed from cells (across tissues and organs) is the organism. The task is to keep the scale and direction consistent.

Given Data / Assumptions:

• Atom → Molecule is “basic unit builds a larger, functional whole.”
• Cell is the fundamental unit of life.
• We seek the larger biological whole ultimately composed of cells.

Concept / Approach:
While cells first form tissues and organs, the full build-up culminates in an organism. The analogy does not require the immediate next level; it mirrors the idea of “unit to the complete higher-order entity.” Nucleus is a subcellular part, not larger; matter is overly broad and not the specific biological whole; battery is unrelated.

Step-by-Step Solution:
1) Recognize the compositional direction.2) Map from cell to the fully formed living system.3) Select “Organism.”

Verification / Alternative check:
Biology textbooks describe the hierarchy: cell → tissue → organ → system → organism. The final whole is the organism, preserving the analogy’s intent.

Why Other Options Are Wrong:

• Nucleus: Part of a cell, wrong direction.
• Matter: Overly general; not a biological structural whole.
• Battery: Not biological.

Common Pitfalls:
Picking an intermediate level (e.g., tissue). The analogy permits skipping intermediate steps as long as the directional build-up is preserved.

Final Answer:
Organism