1.1 activity plant or animal cell reasoning
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Archaeologists found old biological material that could be from plants or animals but its cell structure had broken down and cell components were mixed together, making it difficult to identify. Students analyzed three samples under the microscope to determine the material's origin. They had to first examine one sample and report their conclusion, then compare results with another group, and finally summarize their findings to report back to the archaeologists whether the tissue was mainly from a plant or animal.
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1.1 activity plant or animal cell reasoning
- 1. 1 Plant or Animal? Some archaeologists have found material they think may be plant or animal tissue. Because the material is very old, the cell structure has been broken down and cell components are mixed up. The sample is also likely to have been contaminated with a bit of both cell types, but they are looking for the main type of cells involved. They have decided to analyse three samples from the material, and your class will do the analysis. This is some information about similarities and differences between the cells. Plant Cells only Animal Cells only Plant and Animal Cell Cell wall and membrane Cell membrane Cytoplasm One, large central vacuole One or more small vacuoles Endoplasmic Reticulum (Smooth and Rough) Centrioles (in lower plant forms only) Centrioles in all species Ribosomes Chloroplasts Lysosomes Mitochondria Amyloplast Cilia Golgi Apparatus Lysosomes usually not evident Microtubules Cilia, but rare Flagella (in some cells) Nucleus
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- 3. 3 Sample A This is the microscope picture from Sample A Sample B This is the microscope picture from Sample B
- 4. 4 Sample C This is the microscope picture from Sample C