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7.3 Science Vocab
Metabolic Reactions
| Term | Definition |
|---|---|
| carbohydrates | food molecules that contain carbon, hydrogen, and oxygen atoms |
| alveoli | any of the many tiny sacs of the lungs which allow for rapid gas exchange |
| amino acids | a simple organic compound that facilitates chemical reactions in our bodies |
| amylase | an enzyme, found chiefly in saliva and pancreatic fluid, that converts starch and glycerin into simple sugars |
| bronchi | the large tubes that connect your trachea to the right and left lungs |
| calories | stored energy in food molecules |
| cell | smallest block of life |
| cell membrane | semi-permeable membrane surrounding the cytoplasm of a cell |
| cellular respiration | chemical reaction in all living things that combines food and oxygen to release energy |
| digestive system | a network of organs that help you digest and absorb nutrients from your food |
| esophagus | the canal that connects the throat to the stomach |
| fatty acids | a carboxylic acid that serves muscles, heart, and other organs as building blocks for cell membranes and as energy stored for the body |
| fats | form the body's main energy store and convert into fuels as needed |
| glucose | sugar, small food molecule, simple |
| large intestines | the cecum, colon, and rectum |
| lungs | adds oxygen to and removing carbon dioxide from the blood |
| organ | apart of an organism that is typically self-contained and has a special function |
| protein | large, complex molecules that play many critical roles in the body |
| respiratory system | breathe in air, absorb oxygen in tho the bloodstream, and breathe out carbon dioxide |
| semi-permeable membrane | a layer that only certain molecules can pass though |
| small intestine | part of the intestine that runs between the stomach and large intestine |
| starch | complex carbohydrate, large food molecule |
| villi | small fingerlike structures in the small intestine that have tiny openings to absorb food molecules |
| digestion | a chemical reaction to break down food |
| tissue | group of cells working together |
| fiber | very large food molecule, complex but cannot break down |
| absorption | when food molecules go through the tiny openings in the wall of the small intestine and into the body |
| organ system | a group of organs that work together in the body to solve a problem |
Created by:
christina.higbee
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