Welcome to the Chapter 2 Test!

Please set up your answer sheet like this: Name #1 Name #2 Date, Period Chapter 2 Test

Instructions: The test is in the same style as a visual quiz. However, you get to work at your own pace. You can discuss each answer with your table partner. Together, you will turn in one set of answers. Discuss each answer before writing! During the discussion, decide which concepts from the notes to include in your answer. Remember to underline each concept. If you can’t whisper, you will work alone.

Good luck, and remember to whisper when discussing your answers!

1. For the molecule below: a. Write the chemical formula b. Identify it as a pure element, organic compound, or inorganic compound AND defend your answer. Purple: Carbon Blue: Hydrogen Green: Oxygen Red: Nitrogen

2. Explain how carbon creates a wide variety of organic compounds (two-part answer).

3. For the molecule below: a. Write the common name and chemical formula b. Explain why is considered a carbohydrate

4. Explain how living things produce polysaccharides from monosaccharides.

5. The diagram below shows a cholesterol molecule 5. The diagram below shows a cholesterol molecule. Identify cholesterol as a carbohydrate, lipid, protein, or nucleic acid, and defend your answer. Black = carbon Gray = hydrogen Red = oxygen

6. Explain why lipids, such as oil and wax, can form waterproof coverings.

7. Explain why R-groups are important to living things.

8. Explain why it is possible to build millions of different proteins from just 20 amino acids.

In animals, proteins are used to build structure. 9. Explain how a rooster knows how to build the various proteins it needs to live. Proteins Muscle Skin Cartilage Feathers Beak Some proteins control the rate, or speed, of chemical reactions and regulate cell processes. We’ll learn about these proteins, called enzymes, tomorrow. Other proteins are used to form bone and muscle tissue. Other proteins transport substances into or out of cells. Proteins called antibodies locate and kill invaders that cause disease. How can proteins have so many different functions? The diversity of amino acids account for many different proteins with different functions. Nails

10. Differentiate between A and B.

11. The diagram below shows a breakdown reaction that is catalyzed by an enzyme. Explain why the substrate will not transform into products without the help of an enzyme.

12. Explain why enzyme activity in the graph below decreases sharply at temperatures above 98.6° F. Copyright Pearson Prentice Hall

Congratulations, you’re FINISHED! 1. PUT YOUR FINSHED WORK AND YOUR ORGANIC COMPOUNDS GRAPHIC ORGANIZER IN THE WHITE BOX. 2. PUT THE STUDY GUIDES BACK IN YOUR FILE; RETURN FILE TO THE BOX. You can enjoy quiet free time now (reading, using phone, doing homework, taking a nap.)