This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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Here are the answers to the multiple-choice questions: 1. The main function of the digestive system is to break down food and absorb nutrients. c) Break down food and absorb nutrients 2. The liver produces bile. c) Liver 3. Most chemical digestion occurs in the small intestine. c) Small intestine 4. The finger-like projections that increase absorption are called villi. b) Villi 5. The gallbladder stores bile. b) Gallbladder 6. Gas exchange occurs in the alveoli. c) Alveoli 7. During inhalation, the diaphragm contracts and moves downward. b) Contracts and moves downward 8. Carbon dioxide is removed from the body during exhalation. c) Carbon dioxide 9. The trachea is also known as the windpipe. b) Windpipe 10. Red blood cells contain hemoglobin. c) Hemoglobin 11. An artery carries blood away from the heart. c) Artery 3 done, 2 left today. You're making progress.