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bio chap 3
| Question | Answer |
|---|---|
| inorganic molecules | the "building blocks" of organic molecules ex. water gases, salts, minerals, metals |
| organic molecules | made by living organismscontains lots of carbon atoms |
| Carbohydrates | a group of organic molecules with only the elements C,H, and O. They must have a H:O ratio of 2:1 ex. sugars, starches, glycogen, cellulose |
| monosaccharrides | "imple sugars" the most important one is glucose C6H12O6. Others include fructose C6H12O6 galactose C6H12O6 |
| isomers | different molecules with the same chemical formula. Whats different- structure or shape |
| disarcharides | (double sugar) made by combining 2 monosaccharides |
| glucose + fructose | sucrose (table sugar) |
| glucose + glucose | maltose (grains) |
| glucose + galactose | lactose (milk) |
| polysaccharides | (poly= many) starches, glycogen and cellulose |
| starch | many glucose molecules (a storage compound in plants) |
| glycogen | animal starch; stored in liver and muscle cells |
| cellulose | fiber in wood |
| lipids | organic molecules with only the elements C, H, and O. The ratio od H:O is GREATER than 2:1. Example of lipids- fats, oils, waxes, steroids |
| fats | comes from animals and are saturated (land) |
| oils | comes from plants and are unsaturated(liquid @ room temperature) |
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