<p> Snail and Elodea, a High School Systems Scenario</p><p>Snail and Elodea</p><p>High School Systems Scenario</p><p>DRAFT – Seattle Public Schools Science Instructional Services, [email protected] 1 Spring 2012 Snail and Elodea, a High School Systems Scenario</p><p>Snail and Elodea</p><p>Directions: Use the following information to answer questions 1 through 6 on pages 3 through 6.</p><p>Students analyzed elodea, a plant that lives and grows in water. They made the following diagram.</p><p>DRAFT – Seattle Public Schools Science Instructional Services, [email protected] 2 Spring 2012 Snail and Elodea, a High School Systems Scenario</p><p>1 What energy transformation occurs when the elodea plant absorbs energy from the lamp? (LS1A,1)</p><p> o A. Heat energy is transformed to nuclear energy.</p><p> o B. Light energy is transformed to chemical energy.</p><p> o C. Kinetic energy is transformed to chemical energy.</p><p> o D. Electrical energy is transformed to nuclear energy.</p><p>2 What process causes carbon dioxide to be released by living organisms? (LS1B, 3)</p><p> o A. Minerals being taken in from the soil</p><p> o B. Water being used as a source of energy</p><p> o C. Food being broken down to provide energy</p><p> o D. Oxygen being absorbed during photosynthesis</p><p>3 Specific organelles in the elodea plant cell perform photosynthesis. Which organelle in the elodea is the site of photosynthesis? (LS1C) </p><p>Write your answer in the box.</p><p>DRAFT – Seattle Public Schools Science Instructional Services, [email protected] 3 Spring 2012 Snail and Elodea, a High School Systems Scenario</p><p>4 Describe how the elodea plant uses energy from the lamp and matter from the environment to live and grow. (LS1A) In your description, be sure to:  Identify two types of matter the plant takes in from the environment.  Describe the process in the plant that uses this matter and the energy from the lamp to live and grow.</p><p>You may use words, labeled pictures, and/or labeled diagrams in your answer.</p><p>Types of matter: </p><p>Process in the plant: </p><p>DRAFT – Seattle Public Schools Science Instructional Services, [email protected] 4 Spring 2012 Snail and Elodea, a High School Systems Scenario</p><p>5 The cells of the elodea plant, like all living organisms, contain special proteins called enzymes. How do the cells obtain these proteins? (LSIE, 7 – too easy?)</p><p> o A. The cells make the proteins using instructions in the genes.</p><p> o B. The proteins are absorbed from the water by cells in the leaves.</p><p> o C. The energy from the lamp changes molecules in the cells into proteins.</p><p> o D. The proteins are all present in the plant seed before the seed germinates.</p><p>6 Gas bubbles are produced by the elodea when a lamp shines on the plant. What substance is the gas in the bubbles? (LS1A, 1)</p><p>Write your answer in the box.</p><p>7 Example of feedback loop in plants. What type of feedback happens when…? (SYSA, 3-4)</p><p> o A. Positive feedback, because….</p><p> o B. Positive feedback, because.</p><p> o C. Negative feedback, because...</p><p> o D. Negative feedback, because...</p><p>DRAFT – Seattle Public Schools Science Instructional Services, [email protected] 5 Spring 2012 Snail and Elodea, a High School Systems Scenario</p><p>8 Cellular respiration and the burning of fossil fuels both are chemical processes. (LS1B, 2)</p><p> Describe one way the chemical process in cellular respiration is similar to the process of the burning of fossil fuels.  Describe one way the chemical process in cellular respiration is different the process of the burning of fossil fuels. </p><p>Similarity:</p><p>Difference:</p><p>DRAFT – Seattle Public Schools Science Instructional Services, [email protected] 6 Spring 2012</p>