Given a scientific passage and an answer, generate a question for the given answer.
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Question: Passage: There are no forces of attraction or repulsion between gas particles . Attractive forces are responsible for particles of a real gas condensing together to form a liquid. It is assumed that the particles of an ideal gas have no such attractive forces. The motion of each particle is completely independent of the motion of all other particles. Answer: superscripts

Answer: Which measure indicates the number of electrons in a given sublevel?

Question: Passage: Hormones Hormones are molecular signals that help regulate a number of biochemical processes. Single amino acids and short protein chains are very common types of hormones. For example, insulin is a protein hormone that regulates the amount of glucose present in the bloodstream. Answer: hormones

Answer: What do you call the type of molecular signals that include insulin and that help regulate a number of biochemical processes?

Question: Passage: From seeing a skeleton, you might think that bones are just dead, hollow structures. But in a living person, those hollow spaces are full of living cells. Bones have a blood supply and nerves. Bones are a living tissue. Answer: living

Answer:
Are bones considered living or dead tissues?