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

Q: Passage: The population is an important unit in ecology as well as other biological sciences. How is a population defined, and what are the strengths and weaknesses of this definition? Are there some species that at certain times or places are not in populations?. Answer: cell division

A: During interphase, the cell undergoes normal growth processes while also preparing for what, by accumulating energy and building blocks of dna?
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Q: Passage: Producers are living things that use energy to make food. Producers make food for themselves and other living things. There are two types of producers:. Answer: producers

A: Living things that use energy to make food, both for themselves and other living things, are what part of an ecosystem?
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Q: Passage: Biochemical compounds make up the cells and tissues of organisms. They are also involved in life processes, such as making and using food for energy. Given their diversity of functions, it's not surprising that there are millions of different biochemical compounds. However, they can be grouped into just four main classes: carbohydrates, proteins, lipids, and nucleic acids. The classes are summarized in Table below and described in the rest of this lesson. Answer: biochemical compounds

A:
What type of compounds make up the cells and tissues of organisms?
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