Period ______Name ______

Organic Chem. Multiple Choice. Select the answer that best completes the sentence or answers the question.

______1. The study of all compounds that make up living things and that contain bonds between

carbon atoms is called _____.

a. Organismal Chemistry b. Biochemistry

c. Organic Chemistry d. Inorganic Chemistry

______2. Macromolecules are formed by a process known as ______.

a. monomerization b. Hydrolysis

c. Polymerization d. Electrolysis

______3. All of the following foods would likely contain protein EXCEPT

a. Fish

b. Eggs

c. Milk

d. Vegetable oil

______4. The individual units that bond together in order to make up a polymer or

macromolecule are called.

a. atoms b. Hydrolysis

c. factors d. monomers

______5. Starch is a polysaccharide made from ______.

a. disaccharides b. C, H, O, N

c. repeating glucose units d. amino acids

______6. An example of a disaccharide includes______.

a. one glucose molecule b. three bonded fructose molecules

c. two bonded glucose molecules d. ribose

______7. Water and lipids do not mix because

a. water is nonpolar and lipids are polar b. water is dense

c. lipids are cohesive d. water is polar and lipids are nonpolar

______8. People who are lactose intolerant lack ______that is needed to break it down?

a. a lipid b. an enzyme

c. a sugar d. a carbohydrate

Look at the organic molecules below. Label each as one of the following: monosaccharide,

disaccharide, starch or nucleic acid

9.___Disaccharide____ 10._nucleotide (monomer of nucleic acid) 11.__starch

12. Examine the diagram below and label each of the following by drawing an arrow from the term to the correct part on the diagram:

monomer polymer

13. Organic molecules contain only a few different types of atoms. Write the names of those atoms on the spaces below.

___Carbon______Hydrogen______Oxygen__ Nitrogen__ Phosphorus___

14. What are three of the four main classes of organic molecules? (hint: think of the foods you eat and what molecules come from these foods) 3pts.

Lipids, Carbohydrates, Proteins, Nucleic Acids

15. Explain why carbon can form bonds with so many other atoms, including itself. Remember it has to do with the carbon atom. (4 pts).

Carbon has 4 electrons in its outer valence shell, it wants to share these electrons with other carbons and other atoms (especially other carbons, because 4+4=8, with 8 carbon has a full outer shell and is stable). In other words, one carbon can bond with 4 other carbons for a total of 8 electrons

Look at the diagrams of the organic molecules below. Label each as one of the following: monosaccharide, disaccharide, starch, amino acid, lipid or enzyme.

16.__Disaccharide__ 17.__Monosaccharide__ 18.____Starch_____

19.__Amino Acid_ 20.__Protein (enzyme)____ 21._____Lipid (saturated)____

ANALYZING CHEMICAL REACTIONS

22. Look at the figure above for the production of maltose. Explain what is being removed from

the molecules and why it must be removed.

Water must be removed to allow space for a bond to form between the two glucose molecules. This removal of water to join two monomers is called dehydration synthesis. The opposite reaction is called hydrolysis (breaking polymers apart)