WGU D425 SCIE 2030 General Chemistry Final Assessment Guide Q & A 2026 (Complete And Verified Study material) (32pages) LEARNEXAMS

1. What is the primary role of buffers in the human body? A) To provide structural support to cells B) To maintain enzyme activity C) To regulate pH levels D) To transport oxygen Answer: C) To regulate pH levels Rationale: Buffers are crucial in maintaining the pH levels in the blood and other bodily fluids, which is essential for the proper functioning of enzymes and metabolic processes. 2. Which element is most essential for the formation of hemoglobin? A) Iron B) Calcium C) Potassium D) Magnesium Answer: A) Iron