What are the three main needs of a healthy diet?, Water, sleep, and exercise, Fuel, organic molecules, and essential nutrients, Protein, sugar, and salt, What is ATP?, A type of vitamin, A source of energy in cells, A type of fat, What prevents the gastric juices from digesting the stomach walls?, Pepsin, Mucus, Hydrochloric acid, Potassium chloride, What is mechanical digestion?, Breaking large molecules chemically, Breaking food into smaller pieces, Absorbing nutrients, Moving food through the blood, Where does chemical breakdown of large food molecules occur?, Stomach and small intestine, Mouth only, Large intestine only, Rectum, What are the requirements for a gas exchange surface?, Dry, thick, and small, Moist, thin, and large in relation to body size, Hard and colorful, ‏What is the primary function of erythrocytes (red blood cells) according to the table in the slide?, ‏Blood clotting, ‏ Defense and immunity, ‏ Transport of oxygen and carbon dioxide, Lymph is mostly derived from:, Blood plasma., Red blood cells, Bones, How many primary functions does the lymphatic system have?, 2 primary functions, 3 primary functions, 4 primary functions, 5 primary functions, What percentage of blood is made up of plasma?, 45%, 90%, 55%, 10%, What are the three main groups of animals?, Mammals, birds, and fish, Herbivores, carnivores, and omnivores, Lions, cows, and humans, Reptiles, insects, and fish

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