Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
3C Elevate Science
Topic 3 Human Body Systems Lesson 3 Supplying Energy
| Question | Answer |
|---|---|
| What is digestion? | the process by which your body breaks down food into small nutrient molecules |
| What are nutrients? | substances found in food that provide the raw materials, the body's cells need, to carry out their essential processes |
| What are carbohydrates? | they provide energy for an organism; they are made up of sugar |
| What is a simple carbohydrate? | it is a sugar; a smaller molecule that tastes sweet |
| What are examples of a simple carbohydrate? | fruit, candy, sugar |
| What is a complex carbohydrate? | it is a starch; larger molecules that are healthier sources of energy |
| What are examples of a complex carbohydrate? | whole grains and rice |
| What are proteins? | they are made up of amino acids and are for growth and repair |
| What are examples of proteins? | fish, beef, eggs |
| What are fats used for? | they are used for long term energy storage |
| Where do saturated fats come from? | they come from animal products; ex: lard is a solid fat |
| Where do unsaturated fats come from? | they come from plant products; ex: oil is a liquid fat |
| What are vitamins? | nutrients that help the body with chemical reactions |
| What are minerals? | nutrients not made by the body, but needed for chemical reactions; ex: calcium and iron |
| What is water? | it is the most important nutrient for the body; it is mostly obtained through the food you eat |
| What is mechanical digestion? | the physical movement and breakdown of food |
| Explain the steps of mechanical digestion. | in the mouth, you are chewing the food; in the esophagus, peristalsis squeezes food down into th estomach; the stomach squeezes the food |
| What is chemical digestion? | the chemicals breakdown food |
| Explain the steps of chemical digestion. | in the mouth, saliva uses enzymes (proteins) that speed up the breakdown of the food; in the stomach, enzymes and hydrochloric acid break down food; in the intestines, digestive juices complete most of the breakdown of food |
| What organs are part of the lower digestive sytem? | the small intestine, the liver and the pancreas |
| What happens in the small intestine? | most nutrients are absorbed into the bloodstream from this organ |
| What does the liver do? | it secretes (releases) bile to help break down fat molecules; it filters blood from toxins; it stores extra vitamins |
| What does the pancreas do? | it produces trypsin to help break down proteins; it secretes insulin |
| Describe the large intestine. | it is shorter than the small intestine; it is the last stage of digestion |
| What does the large intestine do? | it absorbs water from waste |
| What does the rectum do? | it stores waste |
| What does the anus do? | it eliminates waste |
Created by:
carlsond
Popular Science sets