MEGA
Energy in Biology
Cellular respiration is a chemical process in which the bonds between atoms of food molecules and oxygen molecul…
Item EB036002: Energy is given off when ATP and water react to form ADP and inorganic phosphate, but energy is taken in when ADP and inorganic phosphate react to form ATP and water.
Chemical reactions among ATP, water, ADP, and inorganic phosphate occur in living systems. Which of the following correctly describes how energy is transferred during these reactions?
- Energy is given off when ATP and water react to form ADP and inorganic phosphate, and energy is also given off when ADP and inorganic phosphate react to form ATP and water.
- Energy is given off when ATP and water react to form ADP and inorganic phosphate, but energy is taken in when ADP and inorganic phosphate react to form ATP and water.
- Energy is taken in when ATP and water react to form ADP and inorganic phosphate, but energy is give off when ADP and inorganic phosphate react to form ATP and water.
- Energy is taken in when ATP and water react to form ADP and inorganic phosphate, and energy is also taken in when ADP and inorganic phosphate react to form ATP and water.
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 39 | 110 | 35% |
| Grades | |||
| 6–8 | N/A | N/A | N/A |
| 9–12 | 38 | 102 | 37% |
| Gender | |||
| Male | 23 | 62 | 37% |
| Female | 15 | 37 | 41% |
| Primary Language | |||
| English | 36 | 96 | 38% |
| Other | 2 | 5 | 40% |
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 42 | 137 | 31% |
| Grades | |||
| 6–8 | N/A | N/A | N/A |
| 9–12 | 39 | 128 | 30% |
| Gender | |||
| Male | 25 | 79 | 32% |
| Female | 13 | 42 | 31% |
| Primary Language | |||
| English | 34 | 117 | 29% |
| Other | 2 | 8 | 25% |
- Notes
- College Board, S.4.2: Energy Transfer, grades 9-12: • The transfer of chemical energy within living systems involves chemical reactions among ATP, ADP and an inorganic phosphate. The conversion of ATP to ADP and an inorganic phosphate drives other essential reactions in living systems. • During cellular respiration, molecules from food — mainly sugars and fats — are converted in the presence of oxygen into carbon dioxide and water, and the chemical energy of that reaction is used to combine ADP and an inorganic phosphate to make ATP.