UVIC Biology 186 Exam Study Guide |Question and Answer| 100% Correct

UVIC Biology 186 Exam Study Guide |Question and Answer| 100% Correct four major classes in the molecules of life *Ans* 1. Lipids 2. Carbohydrates 3. Proteins 4. Nucleic Acids monomers *Ans* "building block" molecules of a polymer polymers *Ans* many monomers covalently linked together dehydration *Ans* how polymers are synthesized hydrolysis *Ans* how polymers are broken homopolymers *Ans* polymers composed of identical monomers heteropolymers *Ans* polymers composed of different monomers carbohydrates - energy storage *Ans* glycogen in human starch in plants carbohydrates - energy transport *Ans* glucose in blood sucrose in plants carbohydrates - building material *Ans* chitin in arthropod skeletons cellulose in plants molecular recognition and communication at the cell surface *Ans* membrane glycoproteins and glycolipids, such as the MHC complex on the surface of our cells simple sugar *Ans* 3-7 carbons contain hydroxyl and carbonyl groups eg. glucose, galactose, fructose disaccharides (and oligosaccharides) *Ans* two (or a few) monosaccharides attached together eg. glucose + glucose = maltose glucose + fructose = sucrose cellulose *Ans* principle component of plant cell walls glucose linkage: β(1-->4)