1. Which of the following is a fundamental characteristic of all living organisms? A) Ability to consume food B) Ability to move C) Ability to reproduce D) Ability to grow Answer: C) Ability to reproduce Rationale: All living organisms have the ability to reproduce, which is essential for the survival of a species. 2. In the hierarchy of biological organization, which level directly follows the tissue level? A) Cellular B) Organ C) Organism D) Molecular Answer: B) Organ Rationale: The hierarchy of biological organization progresses from molecules to cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and finally the biosphere. 3. What is the primary function of carbohydrates in the human body? A) Serve as genetic material B) Provide structural support C) Store and transport energy D) Act as catalysts Answer: C) Store and transport energy Rationale: Carbohydrates are the body's main source of energy and are crucial for the functioning of cells, tissues, and organs. 4. Which organelle is responsible for producing ATP, the energy currency of the cell? A) Nucleus B) Ribosome C) Mitochondrion D) Endoplasmic reticulum Answer: C) Mitochondrion Rationale: Mitochondria are known as the powerhouses of the cell because