Question

1. how do we get energy to fuel our bodies?
2. what organic molecule is broken down into chemical energy to fuel our cells?
3. compare/contrast structure of atp to adp.
4. which structure, atp or adp, contains more stored energy? where is the energy stored?
5. which energy is high - energy and which is low - energy?
6. some organisms, such as _, store energy more efficiently.
7. which carbon - based molecule stores the most energy and provides the most atp when broken down?
8. where is chemical energy stored in foods?
9. explain the atp/adp cycle using a diagram.

Explanation:

1. We get energy to fuel our cells through cellular respiration which breaks down organic molecules like glucose.
2. Glucose is an organic molecule broken - down to release chemical energy for cells.
3. ATP (adenosine tri - phosphate) has three phosphate groups while ADP (adenosine di - phosphate) has two. ATP has a higher - energy structure due to the high - energy phosphate bonds.
4. ATP contains more stored energy because of its third phosphate bond. When this bond is broken, energy is released.
5. ATP has high energy due to its unstable phosphate bonds, and ADP has lower energy.
6. Fats are carbon - based molecules that store the most energy and provide the most ATP when broken down.
7. Chemical energy in food is stored in the bonds of molecules such as carbohydrates, fats, and proteins.
8. In the ATP/ADP cycle, when a cell needs energy, ATP loses a phosphate group to become ADP and releases energy. To regenerate ATP, ADP gains a phosphate group using energy from food breakdown.

Answer:

1. Through cellular respiration breaking down organic molecules.
2. Glucose.
3. ATP has three phosphate groups, ADP has two; ATP has higher - energy phosphate bonds.
4. ATP.
5. ATP is high energy, ADP is low energy.
6. Fats.
7. In the bonds of molecules like carbohydrates, fats, and proteins.
8. When cell needs energy, ATP loses phosphate to become ADP releasing energy; ADP gains phosphate using food - breakdown energy to regenerate ATP.