Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Anticipation Guide: Before storting the statement below. M icro-bes octivit¡ mork whether you ogree (+) or disogree (-) with eoch After completing the octivity, mork whether you ogree (+) or disagree (-) with eoch stotement below Under eoch stotement, exploin how the octivity gove evidence to support or change your ideos. a Before After 2. Most protists ore single-cellg-d orgonisms thot con only be seen with o microscoPe. 3. Some protists hove chloroplasts 4. Most bocteriq qre hormful, 5. There ore more bocteriql cçlls thon humon cells in your (t E bodY. ,e ö o ò n 5 ù s 6. Viruses contoin genes 7. Viruses ore the smollest cells known. o Ctr ÈU I tr av) o (\ o . SEPUP Cetl Structure and Function'Student Sheet 6.1 Activity 6: Microbes Stop and.Thlnk 1 Would you describe bacteria as being harmfulor helpfulto people? Explain. Stop and Thlnk 2 a) Why are viruses not considered to be microorganisms? b) Look at the figure on p, 33, "Comparing Average Sizes of Microbes'r, How do the sizes of protists, bacteria and viruses compare? c) Which do you think cannot be seen with a classroom microscope? Activity 6: Analysis Questions 1. Fill in the "AfteÉ column for the statements on the Anticipation Guide. Did yourthinking change? 2, Look at the list of words shown below: I Ust 2 list animals animalcell protists bacteria cellwall bacteria plants plant cell animals protists chloroplasts plants respire mitochondria eukaryotes viruses nucleus nucleus List a) 3 ln each llst, look for a relationship among the words, Cross out the word or phrase that does not belong. b) ln each list, circle the word or phrase that includes the others. c) Explain how the word or phrase you circled is related to the other words on the list. 3. You have read how microbes can be both helpful and harmfulto humans. Do you think microbe can be neither helpful or harmful? Explain. 4. You decide to examine some pond water under a microscope. With a magnification of 40 (using the 4X objective), you observe a long, cylindricalorganism moving across the field of view. As you look more closelv, vou notice what appears to be a round structure inside of it. ls this a organism most likely a protist, bacterium orvirus? Explain. 5. Suppose your school's microscopes did not have 40X objectives, but only 10X objectives. Your friend who is in high school uses a 40X objective. Explain what group of microbes he or she can study that you cannot. 6. What are the advantages of using the highest power objective on a microscope? What are the advantages of using the lowest power objective on a microscope? Explain. 7. Using the Venn Diagram below, record the unique features of each group of microbes. Record common features in the space that overlaps. HINT: Think about what you have learned about cells in the last few activities. Protists Bacteria Viru ses 8. Reflection: On a field trip, you visit a laboratory that has an electron microscope. The microscopist (the person who runs the scope) offers to set up a microbe for you to view. What microbe or group of microbes would you choose to view? Why?