1. Explain the theory of endosymbiosis. What is the evidence in favour of this theory?

1. Explain the theory of endosymbiosis. What is the evidence in favour of this theory? 2. What is the panspermia hypothesis? What evidence supports it? 3. Compare and contrast the types of molecules transported by simple diffusion, by osmosis, and by facilitated diffusion. How are these types of movement different from active transport? 4. Currently the earth’s atmosphere has more than 20% oxygen. What is the origin of that oxygen, and how has the content of the atmosphere changed over time? 5. Describe the structure, organization, and functions of microtubules. 6. What is a sodium-potassium pump? 7. What is glycolysis? Describe input and output and the two major phases. 8. What is uncoupling? How is it used physiologically by some organisms? 9. List the main points of the cell theory. 10. Which property of rubisco leads to the problem of photorespiration?