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Name: _______________________ CHAPTER 3 WORKSHEET (BIOLOGICAL MOLECULES) TABLE 1: NAME THE FOUR GROUPS OF ORGANIC MOLECULES AND MAIN FUNCTIONS. (PG 40) organic molecule Carbohydrates Main Functions

___________________________________________________________ ___________________________________________________________

Lipids

___________________________________________________________ ___________________________________________________________

Proteins

___________________________________________________________ ___________________________________________________________

Nucleic Acids

___________________________________________________________ ___________________________________________________________

GENERAL QUESTIONS:

1. What process is used to break down a large organic molecule into two smaller ones? ___________________________

2. What process is used to take two small organic molecules and build a large one? ___________________________

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Name: _______________________ CARBOHYDRATE: (PG 40-44) 3. True/False: Carbohydrates are hydrophobic 4. What three monosaccharides have six carbons? _______ _______________________ _______________________ _______________________ 5. What two monosaccharides have five carbons? _______________________ _______________________

6. Name three disaccharides, and their subunits Disaccharide _________________ _________________ _________________ Subunits _________________ + _________________ + _________________ + __________________ __________________ __________________

7. Name four polysaccharides

______________________ ______________________ ______________________ ______________________

LIPIDS: 1. True/False: Lipids are hydrophilic _______

2. Fats and Oils are composed of three long chains of _____________________ and an alcohol called _____________________ 3. True/False: Fats have lots of double bonds in their fatty acid chains 4. True/False: Oils have lots of double bonds in their fatty acid chains 5. Place an "X" next to the saturated molecule _______ _______ Fat: _____ Oil: _____ 6. Phospholipids are composed of two long chains of _____________________

and an alcohol called _____________________ and a polar head called ____________________ 7. How would you describe the shape of a steroid? _________________________

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Name: _______________________ PROTEINS: 1. A protein is a long chain of what smaller molecules? _____________________ 2. What are the four levels of protein structure? ______________________ ______________________ ______________________ ______________________ 3. One amino acid is composed of a Carbon attached to what four functional groups? (Refer to Pg. 48, figure 3-18)

NUCLEIC ACIDS: 1. A nucleic acid is composed of a sugar and what other two molecules? (Pg. 53; Fig 3-24) _____________________ _____________________

2. What type of sugar does DNA contain? 3. What type of sugar does RNA contain? 4. Name another nucleic acid other than DNA and RNA

_____________________ _____________________ _____________________

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