BioE210 HW2

BioE210 HW2 - Danny Marnell BioE 210 HW #2 1. 5) Molecules...

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Danny Marnell BioE 210 HW #2 1. 5) Molecules have the ability change their 3-D shape because covalently bonded atoms are able to rotate around while keeping its bonded state. 11) Amphipathic molecules have 2 different regions. The non-polar regions cluster together, while the polar regions form hydrogen bonds with water, which creates a “shell” around the non-polar cluster. 15) Carbohydrates, lipids, proteins, and nucleic acids make up the four classes of organic molecules in the body. 16) Carbohydrates are made up of monosaccharides, disaccharides, and polysaccharides. Monosaccharides are simple sugars which are made up of mostly 5 or 6 carbon atoms, with hydrogen and hydroxyl groups attached to each of the carbons. Disaccharides are two monosaccharides that have undergone dehydration to form a single molecule. Polysaccharides occur when many monosaccharides are linked together. 19) Subclasses of lipids are fatty acids, triglycerides, phospholipids, and steroids. Fatty acids are a chain of carbon atoms with hydrogen groups attached, and a carboxyl head. Triglycerides form when three fatty acids bond to glycerol, by way of dehydration of the carboxyl and hydroxyl groups. Phospholipids are similar to triglycerides, except the third hydroxyl of glycerol binds to a phosphate molecule. A nitrogen containing molecule also binds to the end of the phosphate molecule. Steroids always contain four interconnected rings of carbon molecules, with
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BioE210 HW2 - Danny Marnell BioE 210 HW #2 1. 5) Molecules...

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