Name_____________________________________________Period______Date_________________ Characteristics of Life Visualization Lab STATION CHARACTERISTIC of LIFE 1. What is similar between mouse & human DNA? Station #1: a. Mouse DNA model b. Human DNA model OBSERVED CHARACTERISTIC UNIVERSAL GENETIC CODE 2. What is different between mouse & human DNA? 1. Sketch the embryo and baby fish. Station #2: Video: Zebrafish GROWTH & DEVELOPMENT 2. The yolk, attached to the embryo, gradually becomes smaller as the embryo becomes a baby fish. What is the purpose of the yolk? 1. Examine & sketch your lab partner’s iris & pupil. Station #3: Flashlight Pupil Response RESPONSE TO ENVIRONMENT 2. Turn on flashlight and shine in one eye for 20 seconds. Sketch lab partner’s iris & pupil. 3. Wait 1 minute and sketch lab partner’s iris & pupil. 1. Explain what is happening in Picture A. Station #4: a. Picture of Amoeba & Paramecium REPRODUCTION 2. Explain what is happening in Picture B. 1. Click “Closer Look” at each of the 3 temperatures, then “Animate” to view the heart rate. Station #5: Daphnia – 2. Count and record the number of beats in 10 seconds at each temperature: HOMEOSTASIS 10oC - _____ 20oC - ______ 30oC - _______ 3. How did the Daphnia respond to different temperatures? 1. Why is the balloon on Test Tube B inflated and not on Test Tube A? (Hint: oxygen + sugar→_____ + ______) Station #6: a. Test Tube A: yeast + water METABOLISM (USE ENERGY) b. Test Tube B: yeast + water + sugar 1. Sketch what you see for the cheek sample. Station #7: a. Cheek sample CELLS 2. Sketch what you see for the onion sample. b. Onion sample 3. What is similar in both samples? 4. What is different in both samples? 1. Explain what happened in the history of whales based on the two pictures. Station #8: a. Land mammal-ancestor of modern whales. b. Modern whale EVOLVE 2. Why would whales want to become aquatic mammals instead of staying as land mammals? 3. What evidence is there in modern whales to indicate it was once a land mammal?