Unit #2 – Biomolecules: The Chemistry of Life . Learning Focus 1.2 – The Structure & Function of Biomolecules. TEKS Objectives. (9) The student is expected to:
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Learning Focus 1.2 – The Structure & Function of Biomolecules
Simple carbohydrates are often called sugars (glucose, fructose (from fruits) and galactose (from milk)).
Simple sugarsaremonosaccharides (one + sugar).
Large molecules of carbsare called polysaccharides (many + simple sugars).
Strings of monosaccharides make up a polysaccharide.
Animals convert carbs and store the energy in the form of glycogen found in cells (often muscle cells).
Plants store their carb energy in the form of starch and use cellulose for structure (think tough and fibrous like celery!).Carbohydrates Cont.
An http://www.cramscience.ca/images/uploaded/uploadedLarge/1ff8e0a92c3974adacb557e5afa82bca.jpgenzymeis a proteinthat acts as a biological catalyst. Enzymes work in cells.
Catalysts speed up chemical reactions.
The enzyme attaches to the substrate that it works with (the reactants).
Now that the enzyme is connected to the substrates, the substrates will react and produce products.
This is called the lock and key model because -specific enzymes will only work on specific substrates.Enzymes & The Lock & Key Model