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7 Prokaryote and Eukaryote Cells S

Learn about the structure of prokaryotic cells through engaging diagrams and activities. Explore bacterial shapes, identify ribosomes, cell walls, and understand free-floating DNA. Great for biology students and educators

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    Prokaryotic a n d Eukaryotic Cells Do all cells have the same structure? W h An efficiency apartment is a one-room apartment. This one room is where you sleep, eat, shower, and entertain your guests. It all happens in one room. I t is a simple way of living in a small space. A mansion is a large, complex living space with many separate rooms. There are rooms for cooking, eating, sleeping, bathing, reading, watching TV, entertaining guests, exercising, and storage. The rooms in a mansion are constructed for the specific things you would like able to do. You can live in simple efficiency or complexity. Fn this activity be looking at cells that are as simple as a one-room efficiency apart- ment or as complex as a mansion. M o d e l 1 - T h r e e T y p e s o f B a c t e r i a l Cells ke to be r we will Cell wall Ribosom es Cytopla sm Flagellum 1 . The three bacterial shapes in Model 1 are referred to as coccus (sphere), spirillum, a nd bacillus £rpd). Label the diagrams in Top left; Coccus , side: spirillum Model 1 with the correct description . Bottom left: baciflus, Right Prokaryotic and 1

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    2. What is represented by the small dots found in each of the bacteria cells? Ribosomes 3. What is the name of the outermost layer that forms a boundary around the outside of each cell? Cell Wall 4. How is the DNA described and what does this mean? The bacteria is free floating which implies that DNA can move around anywhere within the cell POGIL~ Activities for High School 2

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    5. All the internal structures are suspended (floating) in what substance? Cytoplasm 6. One of the bacteria in Model 1 has a tail-like structure. a. What is this structure called? Flagellum b. What might be the purpose of this structure? It helps bacteria move around c. Based on your answer to the previous question, what might you infer about the absence of this structure in the other two bacteria cells? They don't move around they just stay in one place so they don't need flagellum M o d e l 2 - A n i m a l a n d P l a n t Cells Animal Cell Plant Cell Cell membrane Temporary vacuole Nuclear membrane D N A Nucleolus Nucleus Chloropl a s t Cytoplasm Endoplasmic jeticulum Ribosomes (free o r attached) Lysosome Mitochondria Vesicle Golgi apparatus Large p e r m a n e n t vacuo le Cell wall 7. Looking at Model 2, list at least three structural differences (other than shape} between an animal and a plant cell. Only plant cells have chloroplast, large permanent vacuole, and cell wall animals do not Prokaryotic and 3

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