Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: One useful application of PET scanning is in the diagnosis of Alzheimer's disease. This debilitating condition associated with memory loss primarily occurs in elderly individuals. A protein known as beta-amyloid gradually forms deposits, or plaques, in the brain. Severe memory loss and impaired movement appear to be direct results of the plaque growth. Answer: elderly
[EX A]: Alzheimers disease is associated with memory loss in what group of people?

[EX Q]: Passage: When fuel is burned, most of the energy is released as heat. Some of this heat can be used to do work. Heat cooks food or warms your house. Sometimes the heat is just waste heat. It still heats the environment, though. Answer: heat
[EX A]: When fuel is burned, most of the energy is released in what form?

[EX Q]: Passage: 2. Chemical energy is energy that is stored in the bonds between the atoms of compounds. If the bonds are broken, the energy is released and can be converted to other forms of energy. Answer: atom bonds
[EX A]:
Where is chemical energy stored?