ST. ANDREW’S SCOTS SCHOOL OLIVOS BUENOS AIRES - ARGENTINA Microscopy: watching living organisms Introduction: Living organisms can exists in diverse sizes. A huge amount can be seen without help, but most of them are so small that are invisible to the human eye. Due to that reason, we use microscopes to watch organsims or/and single cells. Aim: use light microscopes to watch different cell preparations to prove what have we seen at class. Procedures: There are 6 different microscopes with different cell preparations. 1. 2. 3. 4. 5. Approach to each of the microscopes. Gently focus the image to your needs. When you identify the cell, draw a picture of it. Label the most possible organelles that you could watch on the picture. Describe if the cell is eukaryotic or prokaryotic, if it is eukaryotic identify if it is a plant or animal cell, argue your answer. 6. Try to watch other living organism on the microscope, ask for the materials that you will need, if it is possible your teacher will give you the materials and describe what you see Results: 1. 4. 2. 5. 3. 6. Reflection: Answer the following questions. 1. 2. 3. 4. Was easy to watch these preparations? What limitation could you find to the microscopes? Are the cells from the preparations similar to the models that you use to study? Why? What other types of microscopes can you name? Make a research about one type of microscopes and describe its positive features and limitations.