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Never Say Die:
Viewer Challenge Quiz |
Watch the Scientific American Frontiers special Never Say Die (Show 1003), and then test your knowledge by answering the following questions.
"Eat Less -- Live Longer"
1. Studies conducted by both Walford and Weindruch suggest two food-related keys to longer life spans, namely:
2. Weindruch found that damage to monkey muscles is caused by:
- a. stress
- b. high fat
- c. free radicals
- d. too little exercise
"The Clock of Life"
3. Chromosomes inside the cell contain DNA; at the tips of the chromosomes are the:
4. Progeria is a disease that causes children to:
"Wisdom of the Worms"
5. Bathing nematodes in chemicals caused this to happen:
6. Life span in nematodes is controlled by:
- a. neurons.
- b. neurotransmitters.
- c. physical activity.
- d. hormone messengers.
"How to Make a Nose"
7. What kind of cell is used to make all other cells?
8. Pediatric surgeon Vacanti hopes tissue engineering technology can be used to:
- a. clone humans.
- b. solve shortage of transplant organs.
- c. clone dinosaurs.
- d. address population issues.
"Use It or Lose It"
9. When compared to brains of elderly, unstimulated rats, the stimulated rats showed these two effects in their brains:
- a. denser neuron fibers.
- b. more blood vessels.
- c. accumulation of plaque.
- d. slower synapses.
10. List three ways to maintain a youthful brain:
I WANT TO SEE THE ANSWERS TO THE
NEVER SAY DIE VIEWER CHALLENGE!
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Scientific American Frontiers
Fall 1990 to Spring 2000
Sponsored by GTE Corporation,
now a part of Verizon Communications Inc.
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