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Name:_________________________ Lab Title: Purpose: Materials: Procedure: Variation of Life To compare and contrast the kingdoms at the microscopic level Slides of preserved specimens, digital microscope, computer, elodea leaf, water, slides, forceps, dropper, cover slips. Follow instructions as listed below. Bacteria Slide: Bacteria are unicellular organisms. They are prokaryotic. Draw what you see on 400x. Label the cell membrane. What does prokaryotic mean? ________________________________________ What shapes do you see? ________________________________________ Notice that there is no nucleus present. Animal-like Protists Slide: You will observe either paramecium or amoeba. Both are unicellular, eukaryotic and heterotrophic. Draw one organism on 400x. Be sure to label the cell membrane and the nucleus. What does eukaryotic mean? ________________________________________ What does heterotrophic mean? ________________________________________ Plant-like Protists or Algae Slide: Most plant-like protists, also called algae, are multicellular and eukaryotic. Describe how the cells are connected? ______________________________________ Although these cells are eukaryotic, it is hard to see the nucleus. These protists are also autotrophic. What does this mean? _______________________________________ You should see tiny green chloroplasts. Draw one strand of algae on 100x. Label the chloroplasts and cell walls. Be sure to show that individual cells are connected together. Fungus Slide: This is a slide of a mold smear. Except for yeast, all fungi are multicellular and eukaryotic. Describe the color. ____________________________________________ View on 400x. Label the cell wall. Are chloroplasts present? _________________ Are fungi autotrophic or heterotrophic? ______________________________________ Are the nuclei visible? ___________________ Plant Cell Slide: You will be making a wet mount of a common aquarium plant, Elodea. Take a leaf from the top of the sprig with a forceps. Place a drop of water on top and a cover slip. View on 100x. Draw a group of plant cells as you see them on low power. Label chloroplasts and cell walls. Plants are multicellular, eukaryotic and autotrophic. Their cells are organized into tissues, which is more complex than the algae. Animal Slide: You will be viewing epithelial cells. Notice that these cells are arranged in tissues, like the elodea. Animals are multicellular, eukaryotic and heterotrophic. Note that chloroplasts are not found in animals; therefore they must obtain their own food. Draw a group of animal cells as you see them on 100x. Label the nucleus and cell membrane of one of the cells. Variation of Life Lab - Conclusions: Name:____________________ 1.Complete the chart below using the underlined words in the lab handout. Organisms Similarities Differences Bacteria and Animal-like Protists Animal-like and Plant-like Protists Fungus and Plants Plants and Animals 2. Write a paragraph with at least four sentences describing one of the organisms observed in the lab today. Be sure to describe using shape, color, organization of cells, as well as characteristics named in the lab handout and your notes! 3.Which organisms are the most primitive or simple? Support your answer. 4.List two sources of error in your lab. 5. Formulate one idea for further study. What would you like to examine further? What questions do you still have that could be answered by further study?