Expert Q&A Done Please answer all portions of the questions asked with explanati

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Expert Q&A Done Please answer all portions of the questions asked with explanations thank you Exercise 3: Introduction to the Eukaryotic Cell (30 points) Conclusions 5 points) What are three attributes of mitochondria & chiloroplast hat suggest they were once free-living bacterat What is this theory called 2. (8 points) Compare & Contrast the structure of a generaized plant and animal cell. Highlight which features are common to all cells and which are specific to just plants or just animals. (3 points) Cells that ine your intestines are known l to possess a large I number of membrane proteins that transport small molecules & ions across the plasma membrane. Which cell structure would you expect to be required for this function of the cells Explain. 4. (6 points) Label each cellular component with its role Role a. Nucleus 2. Perimeter fencing with secure gates 3. Food 4. Protein Factory 5, Power Station Vacuoles d. Mitochondria 8 e. Chloroplast f. Plasma Membrane 6. Administrative/information hub (4 points) Describe in your own words the structure of a chloroplast using these identifying terms: enzymes. photosynthesis. thylakoids and grana 5. 6. (2 points) Vacuoles vary in size and function. Most are storage centers, but some contain digestive centers. Why are toxins such as nicotine. cocaine, and caffeine enzymes and serve as recycling stored in vacuoles instead of cytosol? 7. (2 points) Predict what would happen to a cell exposed to: a. a drug that prevents ribosomes from functioning b. an enzyme that degrades the cell wall

Explanation / Answer

A) Following are the primary three attributes of mitochondria and chloroplast that suggest they were once free-living bacteria.

1. They have small, circular chromosomes

2. Produce their own ribosomes

3. Divide in a manner similar to bacterial fission

B) The theory is called as endosymbiosis

Explanation:

[Endo = "within"]

[Endocytosis = (cyto = cell) a process of 'cell eating' - cells are engulfed, but then usually digested as food]

[Endosymbiosis = cells are engulfed, but not digested and cells live together is a mutually benefitting relationship, or symbiosis]

The endosymbiotic theory proposed that mitochondria are the result of endocytosis of aerobic bacteria and chloroplasts are the result of endocytosis of photosynthetic bacteria. In both cases by large anaerobic bacteria who would not otherwise be able to exist in an aerobic environment. This arrangement became a mutually beneficial relationship for both cells (symbiotic).

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