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23 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Are organic molecules that are _______ in water?
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non-soluble
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What are the 4 elements in a lipid?
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Carbon, Oxygen, Hydrogen and sometimes Phosphorus and Nitrogen
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Contain more ____ than other biological molecules?
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energy
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What do lipids function in?
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store energy, insulate against heat loss, forms a protective layer around organs (kidney)
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What are the 3 types of lipids?
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Triglyceride (neutral fat), Phospholipid and Steroid
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What are neutral fats composed of?
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3 fatty acids & 1glycerol
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TRI glyceride
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Neutral fats can be either...?
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Saturated or unsaturated
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What is a saturated fat at room temperature?
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solid
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What are examples of saturated fats?
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bacon grease, butter, lard
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Saturated fats have:
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all the hydrogen atoms possible and no double bonds between the carbon atoms
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Unsaturated fats are ____ at room temperature?
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liquid
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What are examples of unsaturated fats?
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olive oil, sunflower oil
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Unsaturated fats contain:
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at least one double bond in the carbon chain
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What is glycerol?
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a compound with 3hydrates of carbon and 3-OH groups.
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what portion of the fatty acid reacts with the -OH groups? what is formed?
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the acid portion.
fat and 3 molecules of H2O are formed |
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What is Emulsification?
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the process of causing an oil to disperse in water.
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Why dont fats mix with water?
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because they are non-polar
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What can emulsify a fat? Why?
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the addition of soap because it has a polar head&non-polar end.
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What is a Phospholipid?
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A neutral fat that has a phosphate group containing nitrogen.
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what replaces one of the fatty acids?
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Why are Phospholipids different?
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they are not electrically neutral. Have a polar head and non-polar tail.
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not because of P or N
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What is the component of a cell membrane?
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Phospholipid bilayer (2layers)
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What is a steroid?
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4 fused rings of carbon atoms attached in varying lengtha
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What are examples of naturally made steroids?
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Cholesterol, testosterone and estrogen.
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