Track 14

Unit 11

Biology

The Fountain of youth

Page 103

Build your vocabulary

1. Some lifestyles accelerate the aging process by damaging the body.

2. If our body doesn’t get rid of waste products, they will accumulate inside our cells. In turn, we can become tired or even sick, and can’t function as well.

3. Scientists -particularly biologists- are intrigued by the aging process.

4. Because a half-cup serving of ice cream typically has 120-plus calories, eating too much of it can cause weight gain.

5. Our body is made up of millions of cells, with new ones produced daily.

6. Mice whose bodies produce extra electrons age faster.

7. People with a fast metabolism tend to be thin, even if they eat a great deal.

8. Salt molecules are made up of two parts: sodium and chloride.

9. One benefit of getting proper nutrition -including eating protein and a variety of fruits and vegetables- is living a longer life.

10. One way to supplement our diet is to take vitamins.