CHEM 102 Lecture Notes - Lecture 25: Homopolysaccharide, Membrane Lipids, Disaccharide

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Blood group types: human blood is classified into four types: a, b, ab, and o blood groups: The basis for the difference is the type of sugars (oligosaccharides) present. Blood of one type cannot be given to a recipient with blood of another type. A transfusion of wrong blood type can cause the blood cells to form clumps - a potentially fatal reaction. People with type o blood are universal donors, and those with type ab blood are universal recipients o. In the united states type o blood is the most common and type a the second most common. o. The biochemical basis for the various blood types involves oligosaccharides present on plasma membranes of red blood cells. o. The oligosaccharides responsible for blood groups are d-galactose and its derivatives. Solanin - a potato toxin, is a oligosaccharide found in association with an alkaloid. Bitter taste of potatoes is due to relatively higher levels of solanin.