Q: What element is an essential part of many molecules needed by living organisms? Read this paragraph and choose the correct option from the provided answers: Nitrogen is an essential part of many molecules needed by living organisms. Choices: - helium - silicon - hydrogen - nitrogen A:
nitrogen

Q: What type of device do scientist use to determine wind speed? Read this paragraph and choose the correct option from the provided answers: Choices: - barometer - photometer - dynamometer - anemometer A:
anemometer

Q: Q: What type of work called occurs when a system pushes back the surroundings against a restraining pressure? Read this paragraph and choose the correct option from the provided answers: A type of work called expansion work (or pressure-volume work) occurs when a system pushes back the surroundings against a restraining pressure, or when the surroundings compress the system. An example of this occurs during the operation of an internal combustion engine. The reaction of gasoline and oxygen is exothermic. Some of this energy is given off as heat, and some does work pushing the piston in the cylinder. The substances involved in the reaction are the system, and the engine and the rest of the universe are the surroundings. The system loses energy by both heating and doing work on the surroundings, and its internal energy decreases. (The engine is able to keep the car moving because this process is repeated many times per second while the engine is running. ) We will consider how to determine the amount of work involved in a chemical or physical change in the chapter on thermodynamics. Choices: - shape work - contrast work - retention work - expansion work A:
A: expansion work

Question: Q: What develops into embryos inside seeds, from which the next sporophyte generation grows? Read this paragraph and choose the correct option from the provided answers: In seed plants, the gametophyte generation takes place in a cone or flower, which forms on the mature sporophyte plant. Each male gametophyte is just a few cells inside a grain of pollen. Each female gametophyte produces an egg inside an ovule. Pollination must occur for fertilization to take place. Zygotes develop into embryos inside seeds, from which the next sporophyte generation grows. Choices: - secretions - buds - pupa - zygotes A:
Answer: zygotes

*Question*
Q: What term describes a region of space around an atom that has a non-zero probability for an electron with a particular energy? Read this paragraph and choose the correct option from the provided answers: An atomic orbital is a region of space around an atom that has a non-zero probability for an electron with a particular energy. Analogously, a molecular orbital is a region of space in a molecule that has a non-zero probability for an electron with a particular energy. Both an atomic orbital and a molecular orbital can contain two electrons. Choices: - orbital lobe - minimal orbital - related orbital - atomic orbital A:
**Answer**
atomic orbital

(Q).
Q: What organ participates in all digestive activities except ingestion and defecation? Read this paragraph and choose the correct option from the provided answers: 23.4 The Stomach The stomach participates in all digestive activities except ingestion and defecation. It vigorously churns food. It secretes gastric juices that break down food and absorbs certain drugs, including aspirin and some alcohol. The stomach begins the digestion of protein and continues the digestion of carbohydrates and fats. It stores food as an acidic liquid called chyme, and releases it gradually into the small intestine through the pyloric sphincter. Choices: - small intestine - tongue - large intestine - stomach A:
(A).
stomach