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Q do you think these bonds are ionic covalent a

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Q: Do you think these bonds are … ionic? covalent? A dipeptide is 2 amino acids linked together. A polypeptide, more than two. Image: Protein Primary Structure , Wiki From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Protein Structure Image: Levels of protein structure , M Ruiz From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Proteins - Dietary __________ Proteins = contain all essential amino acids necessary for good health __________ Proteins = are missing some of the essential amino acids necessary for good health Essential Amino Acids = can’t be synthesized by the human body Percentage of daily food intake that should be protein: 10 – 35%. The amount of protein that a person actually requires on a daily basis is quite small, approximately 0.8 gram per pound of body weight, depending on level of physical activity. (That means, for example, that 150# person needs about 120 grams or 4.25 oz of protein daily.) – USDA Lentils , a vegetable protein, Paul Goyette; Roasted chicken , Viperx, Wiki From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lipids - Organic Macromolecules Fats, Phospholipids, Waxes & Steroids Hydrophobic macromolecules…insoluble in water. Not attracted to water because … non-polar covalent bonds linking carbon & hydrogen aren’t attracted to the polar bonds of water . Images: Cholesterol , Wiki; Phospholipid Structure , Bryan Derksen. Wiki Honeycomb , Wikii; Oil & Water , Kidipede From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lipids - Organic Macromolecules Fats Fats and oils are made from two kinds of molecules: ____________ (a type of alcohol) _____________ (triglycerides) Images: Oil & Water , Kidipede From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lipids - Dietary Fats Saturated fats Mostly from animal sources. Single bonds between the carbons in their fatty acid tails (all carbons are bonded to max number of hydrogens possible). Hydrocarbon chains fairly straight and packed closely together … so ______at room temperature. Unsaturated fats (oils) Mostly from plant sources. Have double bonds between some carbons in the hydrocarbon tail, causing bends or “kinks” in shape. Kinks in hydrocarbon tails, so unsaturated fats can’t pack closely together … ________ at room temp. From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Lipids – Dietary Fats We typically refer to them all as “Fats”, but remember, fats are only one of several molecules known as lipids . Phospholipids, steroids and true fats play an important role in human nutrition, should get no more than 30% of calories from fats., and the type of fat consumed is very important! _____________ fatty acids (EFAs) are fats that the body can’t make, but needs to take in from outside sources.
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