1. Which criteria that define life implicate existence of enzymes? Why are viruses not universally considered to be a life form? Do viruses contain enzymes?
2. Human body can metabolize both lactate and alcohol but can only produce lactate and not alcohol. Why? What are the advantages of either of the two processes? What happens to alcohol in human body? How is this process related to the production of vinegar? Why is alcohol toxic to human? Is alcohol toxic to yeasts?
3. Choose one example of the practical application of an enzyme or an enzyme system. Describe the application. Explain what enzyme is used and why? Explain what are the advantages and disadvantages of this application. It can be medical, industrial, laboratory. You can use one of the examples on Moodle or find your own.