Answer the following question given this paragraph: The most widely accepted theory explaining how muscle fibers contract is called the sliding filament theory . According to this theory, myosin filaments use energy from ATP to "walk" along the actin filaments with their cross bridges. This pulls the actin filaments closer together. The movement of the actin filaments also pulls the Z lines closer together, thus shortening the sarcomere. Q: What is the most widely accepted theory explaining how muscle fibers contract? Choices: - sliding pigment theoery - sliding tritium theory - sliding carbon theory - sliding filament theory A:
sliding filament theory
Answer the following question given this paragraph: The nitrogen cycle includes air, soil, and living things. Q: The nitrogen cycle includes air, soil, and what? Choices: - water - decomposers - heat - living things A:
living things
Q: Answer the following question given this paragraph: One common application of inductance is used in traffic lights that can tell when vehicles are waiting at the intersection. An electrical circuit with an inductor is placed in the road under the place a waiting car will stop over. The body of the car increases the inductance and the circuit changes sending a signal to the traffic lights to change colors. Similarly, metal detectors used for airport security employ the same technique. A coil or inductor in the metal detector frame acts as both a transmitter and a receiver. The pulsed signal in the transmitter coil induces a signal in the receiver. The self-inductance of the circuit is affected by any metal object in the path. Such detectors can be adjusted for sensitivity and also can indicate the approximate location of metal found on a person. (But they will not be able to detect any plastic explosive such as that found on the "underwear bomber. ") See Figure 23.43. Q: Metal detectors used for airport security work on which principle? Choices: - electricity - inertia - conductivity - inductance A:
A: inductance
Question: Answer the following question given this paragraph: When you are cold, what does your body do to keep warm? You shiver to warm up your body. When you are too warm, you sweat to release heat. When any living organism gets thrown off balance, its body or cells help it return to normal. In other words, living organisms have the ability to keep a stable internal environment. Maintaining a balance inside the body or cells of organisms is known as homeostasis . Like us, many animals have evolved behaviors that control their internal temperature. A lizard may stretch out on a sunny rock to increase its internal temperature, and a bird may fluff its feathers to stay warm ( Figure below ). Q: Maintaining a balance inside the body or cells of organisms is known as? Choices: - ketosis - equanimity - consciousness - homeostasis A:
Answer: homeostasis
*Question*
Answer the following question given this paragraph: A pair of valence electrons in a bonded atom that does not participate in bonding is called a lone pair. Lone pair electrons contribute to molecular shape. Q: What is a pair of valence electrons in a bonded atom that does not participate in bonding called? Choices: - opposite pair - isolated pair - hostile pair - lone pair A:
**Answer**
lone pair
(Question)
Answer the following question given this paragraph: Gregor Mendel was born in 1822 and grew up on his parents' farm in Austria. He did well in school and became a monk. He also went to the University of Vienna, where he studied science and math. His professors encouraged him to learn science through experimentation and to use math to make sense of his results. Mendel is best known for his experiments with the pea plant Pisum sativum (see Figure below ). You can watch a video about Mendel and his research at the following link: http://www. metacafe. com/watch/hl-19246625/milestones_in_science_engineering_gregor_mendel_and_classical_genetics/ . Q: What scientist and monk is best known for his experiments with pea plants? Choices: - steiner mendel - charles darwin - aristotle - gregor mendel A:
(Answer)
gregor mendel