Original Project
Models
There is no guarantee that ideas based solely on a model are correct.
Item MO028002: A chemist could use a model to show other people what DNA looks like or to help him/herself think about DNA.
Why might a chemist decide to make a model of a DNA molecule?
- To show other people what DNA looks like, and to help herself think about DNA
- To show other people what DNA looks like, but not to help herself think about DNA
- To help herself think about DNA, but not to show other people what DNA looks like
- Neither to show other people what DNA looks like nor to help herself think about DNA
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 1523 |
6–8 n = 940 |
9–12 n = 583 |
Male n = 736 |
Female n = 763 |
English n = 1341 |
Other n = 148 |
||
| A. | To show other people what DNA looks like, and to help herself think about DNA | 76% | 75% | 79% | 71% | 82% | 78% | 68% |
| B. | To show other people what DNA looks like, but not to help herself think about DNA | 12% | 13% | 11% | 16% | 9% | 12% | 14% |
| C. | To help herself think about DNA, but not to show other people what DNA looks like | 7% | 8% | 7% | 8% | 6% | 6% | 14% |
| D. | Neither to show other people what DNA looks like nor to help herself think about DNA | 4% | 5% | 3% | 5% | 4% | 4% | 5% |