Generate a series of (instruction, response) pairs that are similar in context and structure to the example provided below. Each pair should consist of a concise instruction followed by an appropriate, detailed response. The instruction should pose a clear task or question, while the response should provide a comprehensive answer or solution that could be understood by someone with a basic understanding of the subject.

Example pair: 
Instruction: According to the text, summarize what environmental impacts growing diamonds in a lab can have?

Here’s the text:
What is the environmental impact of laboratory-grown diamonds and natural diamonds?
The members of the Natural Diamond Council preserve the biodiversity of the areas where diamonds are recovered.

In order to produce synthetic diamonds, manufacturers have to use an incredible amount of electricity in order to recreate Earth’s conditions and generate temperatures between around 1,500 degrees Celsius, or 2,700 Fahrenheit and pressure 1.5 million pounds per square inch. They also need very large amounts of water to cool down the reactors where they produce the lab-grown diamonds. Around 60% of LGDs are manufactured in China and India, countries that rely heavily on coal. There are also production facilities that have managed to use hydropower to replace fossil fuel but that is still a limited option for most of the laboratory-created diamond market.
Response: The process of creating lab-grown diamonds uses massive amounts of electricity to produce extremely high temperatures and pressure. The reactors that produce these effects require large amounts of water to cool them down, though some factories have used hydropower instead of fossil fuels to minimize their environmental impacts.

Your task is to generate more pairs that maintain this level of clarity and detail. The topic is Summarization. Write a long text of instruction by yourself, then summarize the given instruction in a response. Ensure that the responses are informative and accurate, suitable for an educational context. 

Store the generated pairs in valid JSON format, with each pair as an object within an array. Each object should have two key-value pairs: "instruction" and "response". For instance: 

{"contents": [{"instruction": "text", "response": "text"}, {"instruction": "text", "response": "text"}, ...]} 

Remember to maintain consistency in the format and ensure the generated pairs are diverse and cover a broad range of subjects. You must return the response in the asked format and you must not add any additional text in your response.

Based on the following text, describe the function of mitochondria in animal cells. Here’s the text: Mitochondria are known as the powerhouses of the cell. They are responsible for producing adenosine triphosphate (ATP), which serves as the energy currency for cellular activities. They achieve this through a process called cellular respiration, where they convert glucose and oxygen into ATP, water, and carbon dioxide. Mitochondria also have roles in regulating cellular metabolism and apoptosis.
user
Mitochondria are the 'powerhouses' of animal cells, producing ATP through cellular respiration, converting glucose and oxygen into ATP, water, and carbon dioxide. They also help regulate cellular metabolism and programmed cell death (apoptosis).
assistant