MEGA
Energy in Biology
Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors…
Item EB077001: As the carbon dioxide level inside a person’s body increases, the person’s body responds by increasing its breathing rate to reduce the level of carbon dioxide.
Some chemical reactions that occur inside a person’s body cells produce carbon dioxide. What will the person’s body do to respond to increased levels of carbon dioxide?
- The person’s body will use the carbon dioxide to produce glucose.
- The person’s body will stop the chemical reactions that produce carbon dioxide.
- The person’s body will increase its breathing rate to reduce the level of carbon dioxide.
- The person’s body will not do anything because it doesn’t matter how much carbon dioxide is inside the body.
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 136 |
6–8 n = 0 |
9–12 n = 116 |
Male n = 68 |
Female n = 51 |
English n = 106 |
Other n = 6 |
||
| A. | The person’s body will use the carbon dioxide to produce glucose. | 21% | NAN% | 22% | 18% | 27% | 22% | 33% |
| B. | The person’s body will stop the chemical reactions that produce carbon dioxide. | 21% | NAN% | 18% | 24% | 10% | 19% | 17% |
| C. | The person’s body will increase its breathing rate to reduce the level of carbon dioxide. | 51% | NAN% | 53% | 50% | 57% | 53% | 17% |
| D. | The person’s body will not do anything because it doesn’t matter how much carbon dioxide is inside the body. | 7% | NAN% | 8% | 9% | 6% | 7% | 33% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 159 |
6–8 n = 0 |
9–12 n = 147 |
Male n = 80 |
Female n = 65 |
English n = 135 |
Other n = 10 |
||
| A. | The person’s body will use the carbon dioxide to produce glucose. | 22% | NAN% | 20% | 21% | 18% | 21% | 20% |
| B. | The person’s body will stop the chemical reactions that produce carbon dioxide. | 9% | NAN% | 9% | 11% | 8% | 9% | 10% |
| C. | The person’s body will increase its breathing rate to reduce the level of carbon dioxide. | 63% | NAN% | 64% | 64% | 63% | 63% | 70% |
| D. | The person’s body will not do anything because it doesn’t matter how much carbon dioxide is inside the body. | 6% | NAN% | 7% | 4% | 11% | 7% | 0% |