Slide 4 - Proteins and nucleic acid membranes

Slide 4 - Proteins and nucleic acid membranes - Review...

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Unformatted text preview: Review Proteins, nucleic acids Membranes 2 PRS Clicker quizzes today Spark Quiz #2 is available Review 1. Molecular visualization 2. Carbohydrates 1. Subunits = monosaccharides, or simple sugars. Almost always glucose 2. Polymers = polysaccharides Examples: starch, glycogen, cellulose 3. Approx. ratio of atoms: [CH 2 O] Glucose is C 6 H 12 O 6 3. Lipids 1. An important subunit: fatty acid 2. Polymers Triglycerides (= fats) Functions: energy storage, insulation Also, there are monoglycerides and diglycerides. Phospho-diglycerides (usually called phospholipids) Function: membranes 3. Lipids (continued) 3. Sterols 1. Not polymerized 2. Functions: membrane structure, hormones Lipids are mostly hydrocarbons (= H plus C) Not many polar groups Contrast with glucose There are many O-H groups. That explains why sugars are highly soluble in water. Fat used for thermal insulation and for energy Classes of biomolecules 1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleic acids 1. Which molecule is the mostly-hydrocarbon subunit found in fat molecules?...
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Slide 4 - Proteins and nucleic acid membranes - Review...

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