THSB
Matter and Energy in Living Systems
Animals use carbon-containing molecules from food to make a variety of other carbon-containing molecules that be…
Item ME020002: When a wolf hunts and eats a deer, some of the deer meat goes through chemical reactions in the wolf’s digestive system and then becomes part of the wolf’s body.
A wolf hunts and eats a deer. What happens to the deer meat once it is inside the wolf's body?
 Wolf. Photo (CC) by Robert Dewar on Flickr. |
 Deer. Photo (CC) by Brokinhrt2 on Flickr. |
- All of the deer meat is broken down in the wolf's digestive system to smaller and smaller pieces until all of the matter is gone.
- All of the deer meat passes through the wolf's digestive system and leaves the wolf's body as waste.
- Some of the deer meat goes though chemical reactions in the wolf's digestive system and then becomes part of the wolf's body.
- Some of the deer meat passes through the wolf's digestive system and gets added to the wolf's body without going through any chemical reactions.
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 377 |
6–8 n = 377 |
9–12 n = 0 |
Male n = 207 |
Female n = 170 |
English n = 349 |
Other n = 28 |
||
| A. | All of the deer meat is broken down in the wolf's digestive system to smaller and smaller pieces until all of the matter is gone. | 19% | 19% | NAN% | 15% | 23% | 18% | 21% |
| B. | All of the deer meat passes through the wolf's digestive system and leaves the wolf's body as waste. | 26% | 26% | NAN% | 24% | 28% | 26% | 29% |
| C. | Some of the deer meat goes though chemical reactions in the wolf's digestive system and then becomes part of the wolf's body. | 52% | 52% | NAN% | 56% | 47% | 53% | 39% |
| D. | Some of the deer meat passes through the wolf's digestive system and gets added to the wolf's body without going through any chemical reactions. | 4% | 4% | NAN% | 5% | 2% | 3% | 11% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 378 |
6–8 n = 378 |
9–12 n = 0 |
Male n = 207 |
Female n = 171 |
English n = 350 |
Other n = 28 |
||
| A. | All of the deer meat is broken down in the wolf's digestive system to smaller and smaller pieces until all of the matter is gone. | 7% | 7% | NAN% | 8% | 7% | 6% | 21% |
| B. | All of the deer meat passes through the wolf's digestive system and leaves the wolf's body as waste. | 4% | 4% | NAN% | 4% | 4% | 3% | 14% |
| C. | Some of the deer meat goes though chemical reactions in the wolf's digestive system and then becomes part of the wolf's body. | 87% | 87% | NAN% | 86% | 88% | 89% | 57% |
| D. | Some of the deer meat passes through the wolf's digestive system and gets added to the wolf's body without going through any chemical reactions. | 2% | 2% | NAN% | 2% | 1% | 1% | 7% |