Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstrate the theory of endosymbiosis using the models? a. show the big bacteria ingesting the small one b. fuse the two bacterial cells to form a larger cell c. split both bacterial cells in half d. draw circles showing the cells making endospores

The theory of endosymbiosis states that the eukaryotic cells evolved from the prokaryotic cells. According to this theory, a large bacterium ingested a small bacterium and then they evolved together working as a single unit. This can be shown through a model by demonstrating a big bacteria ingesting the small one. The small bacteria came to be cell organelles, such as mitochondria and chloroplasts in the eukaryotic cells with their own DNA.

Hence, the correct answer is 'Option A - show the big bacteria ingesting the small one'.

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