Item EB034001: The reactants ATP + water have more energy than the products ADP + Pi because this reaction transfers energy to the surroundings.
A chemical reaction that converts ATP to ADP and inorganic phosphate occurs in plants and animals. How does the energy of the system of reactants of this reaction compare to the energy of the system of products?
- The reactants have more energy than the products because energy is always given off during chemical reactions.
- The reactants have more energy than the products because this reaction transfers energy to the surroundings.
- The reactants have less energy than the products because all chemical reactions take in energy from the surroundings.
- The reactants have less energy than the products because energy is created by the plants and animals during this reaction.
Pre-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 168 |
6–8 n = 0 |
9–12 n = 145 |
Male n = 92 |
Female n = 55 |
English n = 141 |
Other n = 11 |
||
| A. | The reactants have more energy than the products because energy is always given off during chemical reactions. | 23% | NAN% | 23% | 26% | 22% | 23% | 18% |
| B. | The reactants have more energy than the products because this reaction transfers energy to the surroundings. | 29% | NAN% | 28% | 27% | 29% | 28% | 36% |
| C. | The reactants have less energy than the products because all chemical reactions take in energy from the surroundings. | 33% | NAN% | 34% | 34% | 33% | 35% | 27% |
| D. | The reactants have less energy than the products because energy is created by the plants and animals during this reaction. | 14% | NAN% | 14% | 13% | 16% | 13% | 18% |
Post-Test
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 170 |
6–8 n = 0 |
9–12 n = 150 |
Male n = 85 |
Female n = 65 |
English n = 143 |
Other n = 6 |
||
| A. | The reactants have more energy than the products because energy is always given off during chemical reactions. | 22% | NAN% | 23% | 25% | 22% | 22% | 50% |
| B. | The reactants have more energy than the products because this reaction transfers energy to the surroundings. | 38% | NAN% | 37% | 32% | 45% | 36% | 50% |
| C. | The reactants have less energy than the products because all chemical reactions take in energy from the surroundings. | 22% | NAN% | 23% | 26% | 18% | 24% | 0% |
| D. | The reactants have less energy than the products because energy is created by the plants and animals during this reaction. | 17% | NAN% | 17% | 18% | 15% | 17% | 0% |