MEGA
Energy in Biology
Cellular respiration is a chemical process in which the bonds between atoms of food molecules and oxygen molecul…
Item EB026001: The system of reactants of cellular respiration have more energy than the system of products because cellular respiration transfers energy to the surroundings.
Cellular respiration is a chemical reaction that occurs in plants and animals. How does the energy of the system of reactants of cellular respiration 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 cellular respiration 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 when food molecules are burned during cellular respiration.
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 24 | 113 | 21% |
| Grades | |||
| 6–8 | N/A | N/A | N/A |
| 9–12 | 23 | 105 | 22% |
| Gender | |||
| Male | 12 | 63 | 19% |
| Female | 10 | 38 | 26% |
| Primary Language | |||
| English | 22 | 99 | 22% |
| Other | 1 | 5 | 20% |
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 50 | 140 | 36% |
| Grades | |||
| 6–8 | N/A | N/A | N/A |
| 9–12 | 47 | 131 | 36% |
| Gender | |||
| Male | 22 | 81 | 27% |
| Female | 21 | 43 | 49% |
| Primary Language | |||
| English | 43 | 119 | 36% |
| Other | 3 | 8 | 38% |
- Disciplinary Core Ideas
- PS3.D Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. In these processes, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials.
LS1.C As a result of these chemical reactions, energy is transferred from one system of interacting molecules to another. Cellular respiration is a chemical process in which the bonds of food molecules and oxygen molecules are broken and new compounds are formed that can transport energy to muscles. Cellular respiration also releases the energy needed to maintain body temperature despite ongoing energy transfer to the surrounding environment.