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

[EX Q]: Passage: Each hemisphere of the cerebrum is divided into four parts, called lobes. The four lobes are the:. Answer: 4
[EX A]: How many lobes is each hemisphere of the cerebrum divided into?

[EX Q]: Passage: Electron Microscopes In contrast to light microscopes, electron microscopes use a beam of electrons instead of a beam of light. Not only does this allow for higher magnification and, thus, more detail (Figure 3.3), it also provides higher resolving power. Preparation of a specimen for viewing under an electron microscope will kill it; therefore, live cells cannot be viewed using this type of microscopy. In addition, the electron beam moves best in a vacuum, making it impossible to view living materials. In a scanning electron microscope, a beam of electrons moves back and forth across a cell's surface, rendering the details of cell surface characteristics by reflection. Cells and other structures are usually coated with a metal like gold. In a transmission electron microscope, the electron beam is transmitted through the cell and provides details of a cell's internal structures. As you might imagine, electron microscopes are significantly more bulky and expensive than are light microscopes. Answer: electron microscopes
[EX A]: What powerful microscopes use a beam of subatomic particles instead of a beam of light?

[EX Q]: Passage: Sympatric speciation occurs when groups from the same species stop mating because of something other than physical or geographic separation. The behavior of two groups that live in the same region is an example of such separation. The separation may be caused by different mating seasons, for example. Sympatric speciation is more difficult to identify. Answer: sympatric speciation
[EX A]:
What occurs when groups from the same species stop mating because of something other than physical or geographic separation?