CHEM 131 EXAM 1 (UNL UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

CHEM 131 EXAM 1 (UNL UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS

Question:
1. How many people live on farms now and back in the 1800's?
Answer:
then 90% now 1%

Question:
2. How many plant species are there
Answer:
500,000

Question:
3. how many species are used as agricultural crops
Answer:
3,000

Question:
4. how many species have been cultivated and contain toxic components?
Answer:
150

Question:
5. what enabled plants for use
Answer:
fire

Question:
6. what bean must be heated to eat
Answer:
soybean

Question:
7. heat was the first practice for what?
Answer:
for destroying harmful toxins

Question:
8. Irradiation is not excepted by society
Answer:
true

Question:
9. how much of the US has anorexia

, Answer:
3.7%

Question:
10. how much of the US has bulimia?
Answer:
4.2%

Question:
11. how much of the US is overweight?
Answer:
64.5% (second heaviest country)-MEXICO IS #1

Question:
12. how much of the US is obese?
Answer:
30.5%

Question:
13. how much of the US is severly obese?
Answer:
4.7%

Question:
14. Forms of preservation
Answer:
drying salting fermentation/bactrial(wine and cheese) chilling smoking

Question:
15. Canning came into affect in what century
Answer:
1700's

Question:
16. how much disposable income is spent on food
Answer:
11.4%

Question:
17. how many new food products are produced each year
Answer:
20,000

Question:
18. the color blue indicates