3C Biology Name: _____________________________ Lipids (A.K.A. Fats) Made up of _____________ as well, but with more _____ They store ______ energy than carbohydrates, but __________ to get the energy out of. Four classes of lipids: _________________________________________________ A) Fats and Oils Each of these is known as a __________________, contain three ______________ attached to a ______________ molecule. If the fatty acids are _____________, they are known as _______________ fatty acids and the substance is a fat (i.e. lard, butter, animal fat – __________ at room temperature). Can lead to ________________________ disease if over eaten. If they are __________, they are called ________________ fatty acids and the substance is an oil (peanut oil, canola oil, plant oils). _____________ at room temperature. Unsaturated Fat 3C Biology Name: _____________________________ B) Phospholipids Main component of _______________________. Head part is __________________ (loves water) while tail is _________________ (hates water). They are like fats and oils, but have a __________________ group instead of one of the fatty acids. C) Steroids Made up of __________ fused carbon rings. All are derivatives of __________________. Cholesterol is a big reason cell membranes are ___________ and _____________. All _______________________ are natural steroids. D) Waxes They are used by animals and plants as ____________________ agents. Basically they are steroids with _________________ chains coming off of them. Examples: beeswax, cuticle on leaves… 3C Biology Name: _____________________________ Lipids and Nutrition Energy for Your body 1 Gram = ________________ Transport fat soluble __________________ Protect _____________, and help in ___________ and __________ development Now let’s test for fats using a brown paper bag!
