1. Which of the following terms refers to the process by which living organisms convert food into energy for use by cells? A) Fermentation B) Photosynthesis C) Metabolism D) Replication Correct Answer: C) Metabolism Rationale: Metabolism is the overall process by which living organisms convert food into energy that can be used by cells. This process involves various biochemical reactions that are essential for the maintenance of life. 2. What is the primary function of cellular respiration in organisms? A) To produce oxygen B) To convert sunlight into energy C) To break down glucose and produce ATP D) To synthesize