Original Project
Matter and Energy in Living Systems
All organisms need food as a source of molecules that provide chemical energy and building materials.
Item BF069003: Digestion is needed to break down both fat molecules and complex carbohydrate molecules into molecules that are small enough to get to cells of the body.
Which of the following statements is TRUE about digestion?
- Digestion is needed to break down both proteins and complex carbohydrates into molecules that are small enough to get to cells of the body.
- Digestion is needed to break down proteins into molecules that are small enough to get to cells of the body, but it is not needed to break down complex carbohydrates because they are already small enough to get to cells of the body.
- Digestion is needed to break down complex carbohydrates into molecules that are small enough to get to cells of the body, but it is not needed to break down proteins because they are already small enough to get to cells of the body.
- Digestion is not needed to break down either proteins or complex carbohydrates because these molecules are already small enough to get to the cells.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 2531 | 4763 | 53% |
| Grades | |||
| 6–8 | 1392 | 2895 | 48% |
| 9–12 | 1126 | 1849 | 61% |
| Gender | |||
| Male | 1197 | 2295 | 52% |
| Female | 1286 | 2388 | 54% |
| Primary Language | |||
| English | 2295 | 4275 | 54% |
| Other | 179 | 376 | 48% |