Food and Digestion

Food and digestion are essential topics in biology, focusing on how organisms obtain and process nutrients to sustain life. Digestion begins in the mouth, where food is broken down mechanically by chewing and chemically by saliva. It then moves through the esophagus to the stomach, where gastric juices further break it down into a semi-liquid form. Nutrient absorption occurs primarily in the small intestine, where enzymes and bile aid in breaking down carbohydrates, proteins, and fats. The nutrients are then absorbed into the bloodstream, while waste products continue to the large intestine for excretion. This process ensures that the body receives the necessary nutrients for energy, growth, and repair