Answer the following question given this paragraph: The ostrich egg - unfertilized, of course. Yes, this egg, just like a human ovum, is just one cell. It is a gamete with a haploid number of chromosomes, formed through meiosis. The egg shell membrane encloses the nucleus containing the genetic material and the cytoplasm. Q: The egg shell membrane encloses the nucleus containing the genetic material and what? Choices: - cerebellum - enamel - exoskeleton - cytoplasm A:
cytoplasm
Answer the following question given this paragraph: Carbohydrates include sugars, starches, and fiber. Sugars and starches are used by the body for energy. One gram of carbohydrates provides 4 Calories of energy. Fiber, which is found in plant foods, cannot be digested but is needed for good health. Q: One gram of carbohydrates provides how many calories of energy? Choices: - eight - one - two - four A:
four
Q: Answer the following question given this paragraph: Some comets have periods of thousands or even millions of years. Most long-period comets come from a very distant region of the solar system. This region is called the Oort cloud. The Oort cloud is about 50,000100,000 times the distance from the Sun to Earth. Q: What is the name of the cloud where most long-period comets come from? Choices: - stellar cloud - bulge cloud - volt cloud - oort cloud A:
A: oort cloud
Question: Answer the following question given this paragraph: 29.3 Photon Energies and the Electromagnetic Spectrum 11. Why are UV, x rays, and rays called ionizing radiation? 12. How can treating food with ionizing radiation help keep it from spoiling? UV is not very penetrating. What else could be used? 13. Some television tubes are CRTs. They use an approximately 30-kV accelerating potential to send electrons to the screen, where the electrons stimulate phosphors to emit the light that forms the pictures we watch. Would you expect x rays also to be created? 14. Tanning salons use "safe" UV with a longer wavelength than some of the UV in sunlight. This "safe" UV has enough photon energy to trigger the tanning mechanism. Is it likely to be able to cause cell damage and induce cancer with prolonged exposure? 15. Your pupils dilate when visible light intensity is reduced. Does wearing sunglasses that lack UV blockers increase or decrease the UV hazard to your eyes? Explain. One could feel heat transfer in the form of infrared radiation from a large nuclear bomb detonated in the atmosphere 75 km from you. However, none of the profusely emitted x rays or rays reaches you. Explain. Can a single microwave photon cause cell damage? Explain. In an x-ray tube, the maximum photon energy is given by. Q: Tanning salons claim to use a "safe" form of what light, with a longer wavelength than that in sunlight? Choices: - infrared - microwave - X rays - uv (ultraviolet) A:
Answer: uv (ultraviolet)
*Question*
Answer the following question given this paragraph: Mass spectrometry today is used extensively in chemistry and biology laboratories to identify chemical and biological substances according to their mass-to-charge ratios. In medicine, mass spectrometers are used to measure the concentration of isotopes used as tracers. Usually, biological molecules such as proteins are very large, so they are broken down into smaller fragments before analyzing. Recently, large virus particles have been analyzed as a whole on mass spectrometers. Sometimes a gas chromatograph or high-performance liquid chromatograph provides an initial separation of the large molecules, which are then input into the mass spectrometer. Q: Mass spectrometry today is used extensively in chemistry and biology laboratories to identify chemical and biological substances according to their ratios of what? Choices: - ph to charge - volume to charge - mass to volume - mass-to-charge A:
**Answer**
mass-to-charge
Answer the following question given this paragraph: Wind blows small particles away. As a result, the ground surface gets lower and rockier; this is called deflation . The rocks that are left are called desert pavement . Desert pavement is a surface covered by gravel-sized particles that are not easily moved by wind. Q: What is the process by which wind blows to make the ground surface gets lower and rockier ? Choices: - inflation - stagnation - layering - deflation A:
deflation