Which of the following does NOT play a role in maintaining the health of an organism? (A) Mitosis (B) Cell death (C) Gene expression (D) Sexual reproduction - HSC - SSCE Biology - Question 4 - 2015 - Paper 1

1. Mitosis: This process involves cell division, which is essential for growth and repair, thus playing a critical role in health.

2. Cell Death: Apoptosis, or programmed cell death, is important for removing damaged cells, hence it supports health.

3. Gene Expression: This process dictates cellular functions and adaptations necessary for an organism’s health.

4. Sexual Reproduction: While it plays a role in species survival, it does not directly maintain the health of an individual organism.

Given the evaluation, option (D) Sexual reproduction does NOT play a direct role in maintaining the health of an organism.