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

Input: Consider Input: Passage: In binary fission, a cell splits in two. First, the large circular chromosome is copied. Then the cell divides to form two new daughter cells. Each has a copy of the parent cell's chromosome. Answer: two

Output: In binary fission how many times does a cell split?

Input: Consider Input: Passage: When water freezes in a non-crystalline, amorphous form as frost, the water molecules are fixed in place, but not in a regular, repeating pattern. Frost and other amorphous solids are characterized by their unorganized and unpredictable structure. Because ice comes in both amorphous and crystalline forms, there are differences in the physical properties of ice such as its hardness and density. Answer: amorphous

Output: What kind of solid is characterized by an unorganized and unpredictable structure?

Input: Consider Input: Passage: The electrode at which reduction occurs is called the cathode . The cathode gradually increases in mass because of the production of copper metal. The concentration of copper(II) ions in the half-cell solution decreases. The cathode is the positive electrode. Answer: cathode
Output: What is the electrode at which reduction occurs called?