Problem: 
Q: Answer the following question given this paragraph:   Eukaryotes evolved about 2 billion years ago. Unlike prokaryotes, eukaryotes have a cell nucleus. They have more structures and are better organized. Organelles within a eukaryote can perform certain functions. Some supply energy; some break down wastes. Eukaryotes were better able to live and so became the dominant life form.   Q: Unlike prokaryotes, eukaryotes have what?   A:
Answer: cell nucleus
Problem: 
Q: Answer the following question given this paragraph:   Figure 23.5 Rotation of a coil in a magnetic field produces an emf. This is the basic construction of a generator, where work done to turn the coil is converted to electric energy. Note the generator is very similar in construction to a motor.   Q: In a generator, work done to turn the coil is converted to what type of energy?   A:
Answer: electric
Problem: 
Q: Answer the following question given this paragraph:   Most scientists who study dark matter think it is a combination. Ordinary matter is part of it. That is mixed with some kind of matter that we haven’t discovered yet. Most scientists think that ordinary matter is less than half of the total matter in the Universe.   Q: Most scientists think that ordinary matter makes up how much of the total matter in the universe?   A:
Answer:
less than half