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

Q: Passage: New mitochondria and chloroplasts are produced through a process similar to binary fission . Bacteria also reproduce through binary fission. Answer: binary fission

A: How do bacteria reproduce?
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Q: Passage: As we studied in our chapter on the periodic table, we saw that elements share a number of important properties with other elements found in the same group. The chemical behavior of a given element is largely dictated by the configuration of its valence electrons. Many elements have a tendency to gain or lose electrons in order to achieve a more stable configuration. When a neutral atom gains or loses electrons, it becomes an ion. In this lesson, we will look at ways to predict what type of ion a given element is likely to form. Answer: it becomes an ion

A: What happens when a neutral atom gains or loses electrons?
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Q: Passage: Absorptive protists absorb food molecules across their cell membranes. This occurs by diffusion . These protists are important decomposers. Answer: absorptive

A:
What protists absorb food molecules across their cell membranes?
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