Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
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Question: Microscopes, tools that you may get to use in your class, are some of the most important tools in biology ( Figure Microscopy is the study of small objects using microscopes. Look at your fingertips. Before microscopes were invented in 1595, the smallest things you could see on yourself were the tiny lines in your skin. But what else is hidden in your skin? Over four hundred years ago, two Dutch spectacle makers, Zaccharias Janssen and his son Hans, were experimenting with several lenses in a tube. They discovered that nearby objects appeared greatly enlarged, or magnified. This was the forerunner of the compound microscope and of the telescope. In 1665, Robert Hooke, an English natural scientist, used a microscope to zoom in on a piece of cork - the stuff that makes up the stoppers in wine bottles, which is made from tree bark. Inside of cork, he discovered tiny structures, which he called cells. It turns out that cells are the smallest structural unit of living organisms. This finding eventually led to the development of the theory that all living things are made of cells. Without microscopes, this discovery would not have been possible, and the cell theory would not have been developed. Hookes discovery of the cell set the stage for other scientists to discover other types of organisms. After Hooke, the "father of microscopy," Dutch scientist Antoine van Leeuwenhoek ( Figure 1.2) taught himself to make one of the first microscopes. In one of his early experiments, van Leeuwenhoek took a sample of scum from his own teeth and used his microscope to discover bacteria, the smallest living organism on the planet. Using microscopes, van Leeuwenhoek also discovered one-celled protists and sperm cells. Today, microscopes are used by all types of scientists, including cell biologists, microbiologists, virologists, forensic scientists, entomologists, taxonomists, and many other types. Antoine van Leeuwenhoek, a Dutch cloth merchant with a passion for microscopy. Some modern microscopes use light, as Hookes and van Leeuwenhoeks did. Others may use electron beams or sound waves. Researchers now use these four types of microscopes: 1. Light microscopes allow biologists to see small details of a specimen. Most of the microscopes used in schools and laboratories are light microscopes. Light microscopes use lenses, typically made of glass or plastic, to focus light either into the eye, a camera, or some other light detector. The most powerful light microscopes can make images up to 2,000 times larger. 2. Transmission electron microscopes (TEM) focus a beam of electrons through an object and can make an image up to two million times bigger, with a very clear image. 3. Scanning electron microscopes (SEM) allow scientists to find the shape and surface texture of extremely small objects, including a paperclip, a bedbug, or even an atom. These microscopes slide a beam of electrons across the surface of a specimen, producing detailed maps of the surface of objects. Magnification in a SEM can be controlled over a range from about 10 to 500,000 times. 4. Scanning acoustic microscopes use sound waves to scan a specimen. These microscopes are useful in biology and medical research. Scanning Electron Microscope at (5:04) Click image to the left or use the URL below. URL: 1. How is the electron beam focused? 2. What part of a specimen does a scanning electron microscope look at? 3. Why is it important that a specimen for an electron microscope be placed in a vacuum? Why is this step unnecessary for a light microscope?

Answer: who discovered single-celled protists?


Question: Your respiratory system is made up of the tissues and organs that allow oxygen to enter your body and carbon dioxide to leave your body. Organs in your respiratory system include your: Nose. Mouth. Larynx. Pharynx. Lungs. Diaphragm. The organs of the respiratory system move air into and out of the body. These structures are shown below (Figure 1.1). What do you think is the purpose of each of these organs? The nose and the nasal cavity filter, warm, and moisten the air you breathe. The nose hairs and the mucus produced by the cells in the nose catch particles in the air and keep them from entering the lungs. Behind the nasal cavity, air passes through the pharynx, a long tube. Both food and air pass through the pharynx. The larynx, also called the "voice box," is found just below the pharynx. Your voice comes from your larynx. Air from the lungs passes across thin tissues in the larynx and produces sound. The trachea, or windpipe, is a long tube that leads down to the lungs, where it divides into the right and left bronchi. The bronchi branch out into smaller bronchioles in each lung. There is small flap called the epiglottis that covers your trachea when you eat or drink. The muscle controlling the epiglottis is involuntary and prevents food from entering your lungs or wind pipe. The bronchioles lead to the alveoli. Alveoli are the little sacs at the end of the bronchioles (Figure 1.2). They look like little bunches of grapes. Oxygen is exchanged for carbon dioxide in the alveoli. That means oxygen enters the blood, and carbon dioxide moves out of the blood. The gases are exchanged between the blood and alveoli by simple diffusion. The diaphragm is a sheet of muscle that spreads across the bottom of the rib cage. When the diaphragm contracts, the chest volume gets larger, and the lungs take in air. When the diaphragm relaxes, the chest volume gets smaller, and air is pushed out of the lungs. "Grape-like" alveoli in the lungs.

Answer: what keeps food out of the lungs?


Question: The film opens on October 30, 1988, nearly ten years after Michael Myers's last murderous rampage in Haddonfield, Illinois. An ambulance from Smith's Grove, IL makes its way along the road in a thunderstorm toward the Ridgemont Federal Sanitarium, where Michael, who has been in a coma since then, has been incarcerated. After the apprehensive transfer crew is seen off by medical chief of staff Dr. Hoffman, the ambulance makes its way up the driveway in the storm and back out onto the highway toward Smith's Grove. While in the ambulance, he hears that eight-year-old Jamie Lloyd, his niece and the daughter of Laurie Strode, his first target, is residing in Haddonfield. He immediately grabs and repeatedly bashes a hospital attendant's head against the wall of the ambulance and stabs his finger right into his skull. The other attendant, trapped by the ambulance's locked doors, can only watch helplessly. Soon after, the film introduces Jamie, who has been adopted by the Carruthers family and is still mourning the loss of her mother. Laurie supposedly died in a car accident eleven months earlier. Her older foster sister Rachel comes into her room and consoles her, telling her that she will love her just as much as her mother did. Rachel sends Jamie off to bed and exits the room. Jamie kneels down next to the bed and says her prayers when suddenly, lightning and thunder crash outside, startling her. The door creaks open and as Jamie gets up to close it, the reflection of Michael, donned in his classic white mask and black coveralls, appears in the mirror. Jamie returns to her bed and instantly, Michael's hand reaches out from under the bed and grabs her by the leg. Jamie struggles, gets loose, and runs to her closet. Opening the door, a second Michael appears in front of her, raising his knife. Jamie screams again, attracting the attention of her foster mother, Darlene, who rushes into the room. She finds Jamie, shaking on the floor of her closet, traumatized after what was only a horrific nightmare.Dr. Loomis angrily marches into Hoffman's office the next day, berating him about the transfer of Michael Myers. Hoffman explains that it was mandated by federal law; as he does, he is interrupted by a phone call informing him of an accident involving the ambulance that was carrying Michael Myers. Immediately Loomis smells trouble, and the two men drive to the site of the accident. The state police have secured the scene; the ambulance is upside-down in a river with blood on both the outside & interior. One trooper tells Hoffman it was likely an accident, but Loomis does not believe it. Despite Hoffman's admonishments, Loomis wades into the river & walks round to the ambulance's rear. Inside is a scene of horror; blood is sprayed all over the walls & floor of the ambulance. Immediately, Loomis heads toward Haddonfield, certain that Michael Myers is headed there. Meanwhile, at a gas station, a mechanic works beneath a car, calling for someone to hand him a wrench. When he hears no response, he slides out. There is Michael, raising a long, sharp pole in the air. He thrusts it down into the mechanic's stomach, killing him instantly. Loomis soon after arrives at the gas station and finds the mechanic's body, hanging by a chain from the roof. He also finds several other bodies and immediately sees Michael, standing against the back wall. Loomis shoots at him, but Michael disappears. Loomis scurries out to the exterior of the gas station, barely catching Michael driving away in a truck. Just after, the entire gas station explodes. Loomis survives after crouching behind a nearby barrel.Meanwhile, Jamie is coming home from school to see several kids coming upon her, taunting her that she has no mother. Jamie runs from the scene, crying. At home, Rachel plans to go out for Halloween with her boyfriend, Brady, but her parents refuse and force her to take Jamie trick-or-treating. Rachel protests and Jamie overhears, upset at the fact that Rachel

Answer:
How long is Michael in a coma?