Carbohydrates and Lipids Practice

Master carbohydrates & lipids! Practice identifying, classifying, and comparing key biomolecules. Perfect for biology students.

Biomolecules Overview - Fill in the blank. Organic molecules have four common characteristics. First, they are all carbon based, meaning they all contain carbon. Carbon is the basic element of life. The organic molecules are formed from just a few elements which join together to form small molecules which join together, or bond, to form large molecules. All biomolecules contain the elements carbon, hydrogen, and oxygen. The third characteristic of all organic molecules is that each is kind of organic molecule is built from a single type of building block. For example, the building block of carbohydrates is monosaccharide. When these building blocks are joined together, they form a large molecule (polymer), just as bricks joined together form a wall. Carbohydrate Overview - Fill in the blank Carbohydrates are the most common organic molecule because they make up most plant matter. They are made from carbon, hydrogen and oxygen. Their building block a single sugar called a monosaccharide. Sugars (monosaccharides) consist of carbon rings. When two monosaccharides, or sugars, combine, they form a disaccharide (di = two). When more than two monosaccharides join together, a polysaccharide (poly = many) is formed.There are three classes of carbohydrate polysaccharides. The first is starch. Starch is a carbohydrate used in food storage in plants. Potatoes, pasta and rice are rich in starch. Starches are very valuable because they provide a quick form of energy for the body. The second is glycogen. Glycogen is used for food storage in animals. The third is cellulose. Cellulose is used for structural support in plants (stems, leaves). Lipids Overview - Fill in the Blanks Lipids are a class of organic molecules which includes fats and animal oils such as bacon grease, and has the function of long-term storage of energy in the body. The building block of lipids is the fatty acid, which is a chain of carbons with hydrogen attached to each side. Saturated fats have two carbons attached to each carbon (except the one at the end). Saturated fats are unhealthy fats like butter and Crisco. Saturated fats have all the S’s (straight, single bonds, and solid and room temperature) Unsaturated fats are missing at least one hydrogen and are kinked in shape. The unsaturated fats are healthy, and include oils. Unsaturated fats do not follow the S rule and are opposites (bent instead of straight, double bonds instead of single bonds, and liquid at room temperature instead of solid at room temperature) Saturated vs. Unsaturated Label the Pictures Below as Saturated or Unsaturated.*You must type the words exactly as the appear to get credit* Saturated Unsaturated Sort the information into the correct category of biomolecule. Carbohydrates Monosaccharide Polysaccharide Glucose Starch Cellulose Glycogen Sugars Lipids Glycerol Fatty Acids Fats Steriods Phospholipids Hydrophobic Saturated Unsaturated Triglyceride Going across the table, put the correct information for each biomolecule. Biomolecule Monomer Example Function Carbohydrate Monosaccharide Glucose, Starch, Glycogen, Cellulose Short term energy, Food storage, Structural support Lipid Glycerol Fatty Acids Fats, Steroids, Phospholipids Long term energy, Cellular membranes, Insulation Match each prefix, suffix or root with the correct definition. mono- single di- two poly- many hydro- water saccharide sugar macro- large tri- three -phobic afraid of