Track 18

Unit 11

Biology

The fountain of youth

Take the unit test

Listen to each question, circle the letter of the correct answer

1. What is the main topic of the lecture?

2. Which of the following was not mentioned as a way to slow aging?

3. What is the Hayflick Limit theory an example of?

4. What is the effect of reducing the amount of cellular waste?

5. What would the speaker probably say would happen to the food industry, if many people adopted a CR diet?

6. How do free radicals cause cellular damage?

7. How can free radicals be reduced?

8. What kind of foods does the speaker recommend?

9. What would the speaker probably think about using medicines to extend life?

10. Why does the speaker prefer the natural approach?