MEGA
Energy in Biology
Cellular respiration is a chemical process in which the bonds between atoms of food molecules and oxygen molecul…
Item EB025002: The amount of energy required to separate atoms of the reactants of cellular respiration is less than the amount of energy released as atoms connect to form products.
Cellular respiration is a chemical reaction that occurs in plants and animals. As the atoms that make up the reactant molecules of cellular respiration are separated, is energy required or released? How does that amount of energy compare to the energy associated with forming the product molecules?
- Energy is required to separate atoms of the reactants. This amount of energy is less than the amount of energy released as atoms connect to form the products.
- Energy is required to separate atoms of the reactants. This amount of energy is greater than the amount of energy released as atoms connect to form the products.
- Energy is released as atoms of the reactants are separated. This amount of energy is greater than the amount of energy required to connect the atoms to form the products.
- Energy is released as atoms of the reactants are separated. This amount of energy is less than the amount of energy required to connect the atoms to form the products.
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 31 | 113 | 27% |
| Grades | |||
| 6–8 | N/A | N/A | N/A |
| 9–12 | 26 | 96 | 27% |
| Gender | |||
| Male | 13 | 54 | 24% |
| Female | 14 | 44 | 32% |
| Primary Language | |||
| English | 23 | 86 | 27% |
| Other | 1 | 5 | 20% |
- Distribution of Responses
- Points Earned
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 30 | 139 | 22% |
| Grades | |||
| 6–8 | N/A | N/A | N/A |
| 9–12 | 26 | 128 | 20% |
| Gender | |||
| Male | 15 | 69 | 22% |
| Female | 11 | 56 | 20% |
| Primary Language | |||
| English | 21 | 116 | 18% |
| Other | 4 | 10 | 40% |
- Disciplinary Core Ideas
- PS1.A A stable molecule has less energy than the same set of atoms separated; one must provide at least this energy in order to take the molecule apart.
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.