MEGA
Energy in Biology
Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors…
Item EB082001: To maintain a stable amount of glucose in the blood during exercise the body breaks down glycogen molecules into glucose molecules.
If the amount of glucose in a person’s blood were to drop too low during exercise, the person’s brain would not function properly and the person could faint. How does the person’s body maintain a stable amount of glucose in the blood during exercise?
- The body speeds up the reaction during which glucose and oxygen react to form carbon dioxide and water.
- The body makes glycogen molecules and water molecules from glucose molecules.
- The body breaks down glycogen molecules into glucose molecules.
- The only way to maintain blood glucose levels is to eat more glucose.
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 240 |
6–8 n = 0 |
9–12 n = 210 |
Male n = 125 |
Female n = 84 |
English n = 197 |
Other n = 11 |
||
| A. | The body speeds up the reaction during which glucose and oxygen react to form carbon dioxide and water. | 29% | NAN% | 29% | 28% | 30% | 28% | 18% |
| B. | The body makes glycogen molecules and water molecules from glucose molecules. | 26% | NAN% | 28% | 20% | 33% | 29% | 18% |
| C. | The body breaks down glycogen molecules into glucose molecules. | 33% | NAN% | 32% | 35% | 31% | 30% | 55% |
| D. | The only way to maintain blood glucose levels is to eat more glucose. | 13% | NAN% | 12% | 17% | 6% | 12% | 9% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 289 |
6–8 n = 0 |
9–12 n = 261 |
Male n = 146 |
Female n = 112 |
English n = 243 |
Other n = 14 |
||
| A. | The body speeds up the reaction during which glucose and oxygen react to form carbon dioxide and water. | 28% | NAN% | 27% | 27% | 26% | 26% | 50% |
| B. | The body makes glycogen molecules and water molecules from glucose molecules. | 27% | NAN% | 28% | 27% | 27% | 28% | 14% |
| C. | The body breaks down glycogen molecules into glucose molecules. | 33% | NAN% | 33% | 29% | 39% | 34% | 14% |
| D. | The only way to maintain blood glucose levels is to eat more glucose. | 13% | NAN% | 13% | 18% | 8% | 12% | 21% |