BIO311C 1nd Edition Lecture 4 Outline of Last Lecture - Macromolecules Outline of Current Lecture Carbohydrates:- Functions- Orientation - FormationCurrent LectureFunctions: Energy storage Structural molecules Recognition/signaling molecules – found on external walls of cellsAldoses – a position of the carbonyl group Carbohydrate formula: CH2OJunction of four lines – carbon present Linear to a ring form – just rearrangement of molecules- oxygen goes from double bond to single bonds between carbon and hydrogen. Orientation of the aldehyde group when ring structure forms determines whether it’s alpha or beta particle. Disaccharides form as a result of glycosdic linkage. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Lactase enzyme breaks down lactose-the enzymes are named after the molecules they break down. Water doesn’t break down sucrose without the presence of the enzyme.Everytime a disaccharide is formed, dehydration reaction takes place so take into account the loss of water molecule when determining its formula. Glycogen:A lot of glucose packed into small space unlike starchAlpha molecule Cellulose: Beta molecule Strictly linear formation A lot of hydrogen bonding Structural
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