Science (086) — AI-generated practice question

Even when not visibly active (like sleeping), living organisms must continuously maintain their internal ordered structures. The environment constantly tends to break down these organised structures, so molecular movements are needed to repair and maintain them. This requires energy, which the organism must obtain from food through life processes like nutrition and respiration.

Source: Chapter 5, Section 5.1 — What are Life Processes?

The examiner expects two key points:

1. Why energy is needed — maintenance of ordered internal structures (preventing breakdown/damage), not just visible activity.
2. Source of energy — obtained from food (outside the body).

Avoid saying only "for growth and movement" — the question specifically asks about when the organism is not visibly active. The concept of molecular movement for maintenance is the scoring idea here.