Grade 8 Vocabulary

Question Answer
Substances in food that provides raw materials and energy your body needs Nutients
Major source of energy for the body Carbohydrates
A simple sugar that is the building block of carbs Glucose
Roughage; A complex carbohydrate found in plant foods that cannot be digested Fiber
High energy nutrients that are composed of 3 fatty acids and glycerol, broken down in small intestine Fats
Composed of amino acids; broken down in the stomach; Needed for tissue growth and repair; Found in meats, nuts and eggs Protein
Small units of proteins Amino Acids
Molecules that act as helpers in a variety of chemical reactions Vitamins
Nutrients not made of living things Minerals
Process in which you stomach breaks down food into small molecules so they can be absorbed into the blood stream Digestion
Process in which nutrients pass through the lining of the small intestine into the blood stream Aborption
Occurs in the mouth (chewing) food is broken down into smaller pieces Mechanical Digestion
nutrients are broken down into enzymes into smaller molecules Chemical Digestion
Carbs are broken down by chemical digestion into ? Glucose – simple sugar
Proteins are broken down by chemical digestion into ? amino acids
Fats are broken down by chemical digestion into ? Fatty acids and glycerol
Muscle contractions which push food through the digestive tract. Occurs in the esophagus, stomach… Peristalsis
Tube between the mouth and the stomach Esophagus
A pouch in the digestive systems where both mechanical and chemical digestion occurs, and also digestion of proteins occurs here stomach
Place where most chemical digestion takes place. Also, nutrient molecules are absorbed into blood Small intestine
Water is absorbed into the blood and feces are formed Large intestine
Largest organ in the body. Produces bile for breakdown of fats, and cleans blood Liver
Produces enzymes that flow into small intestine to aid digestion Pancreas

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