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Digestive System Re
Food, Energy, Structure, & Fitness
| Question | Answer |
|---|---|
| Most of the food we eat consists mainly of | water |
| The 3 major classes of nutrients are also known as | macromolecules |
| What are the 3 macromolecules we studied? | carbohydrates, proteins, and lipids |
| Lipids are also known as | fats |
| Proteins are broken down into | amino acids |
| Carbohydrates are broken down into | glucose |
| Lipids are broken down into (2) | fatty acids and glycerol |
| larger molecules that can be broken down into smaller molecules are called | macromolecules |
| Why do we need protein? (3) | makes amino acid, good for health, repairs and maintains body tissues |
| What do carbs do for our body? | give us fast fuel a body can use quickly |
| Why do we need lipids? (3) | make fatty acids, helps development of nervous and reproductive system |
| A calorie is a measurement of what | energy |
| What are the 2 main categories of vitamins? | fat and water - soluble |
| Why do we need vitamins? (2) | normal growth, maintain life |
| Where are enzymes made? | Ribosomes |
| What type of macromolecule category do enzymes fall into? | protein |
| One kCal contains how many calories? | 1,000 |
| Where does the digestive system begin? | mouth |
| what is the name of the tube food goes down when you swallow? | esophagus |
| True or False: the stomach is a muscle. | True |
| When food leaves the stomach, where does it go next? | small intestine |
| Where is the liver? | right side below the rib |
| Where does the unused food leave the body at? | the anus |
| What 2 things does saliva do? | makes food wet/soft, chemical starts digestion |
| What enzyme is in your saliva? | amylase |
| What does your liver do (2)? | Cleans blood, sends liquid/chemicals to small intestine. |
| After food leaves your mouth, what is the correct sequence that it passes through the rest of the digestive system? | esophagus, stomach, small intestine, large intestine, rectum, anus |
| How could you increase metabolism? | walk, exercise, move more... |
| Define peristalsis. | muscle movement that moves food through the digestive tract |
| Fat digestion starts where? | small intestine |
| protein digestion starts where? | stomach |
| carbohydrate digestion starts where? | mouth |
| microscopic structures in the small intestine that increase surface area are called | villi |
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