Answer the following question given this paragraph: Neutralization reactions, like the other chemical reactions you have read about so far, involve electrons. Electrons are outside the nucleus of an atom. Certain other reactions involve the nucleus of an atom instead. These reactions are called nuclear reactions. You will read about them in the next chapter, "Nuclear Chemistry. ". Q: Where are electrons located in relation to the nucleus? Choices: - in the nucleus - In a sack attached to the nucleus - though the nucleus - outside the nucleus A:
outside the nucleus
Answer the following question given this paragraph: Q: What hormone affects developent and maturation in animals? Choices: - insulin - dopamine - melatonin - thyroid A:
thyroid
Q: Answer the following question given this paragraph: Humans need lipids for many vital functions such as storing energy and forming cell membranes. Lipids can also supply cells with energy. In fact, a gram of lipids supplies more than twice as much energy as a gram of carbohydrates or proteins. Lipids are necessary in the diet for most of these functions. Although the human body can manufacture most of the lipids it needs, there are others, called essential fatty acids , that must be consumed in food. Essential fatty acids include omega-3 and omega-6 fatty acids. Both of these fatty acids are needed for important biological processes, not just for energy. Q: Humans need lipids for many vital functions such as storing energy and forming what? Choices: - ionic bonds - zygotes - enzymes - cell membranes A:
A: cell membranes
Question: Answer the following question given this paragraph: The differences in the biomes are due to differences in the abiotic factors , especially climate. Climate is the typical weather in an area over a long period of time. The climate includes the amount of rainfall and the average temperature in the region. Obviously, the climate in the desert is much different than the climate in the rainforest. As a result, different types of plants and animals live in each biome. Q: The differences in the biomes is due to differences in the what factors? Choices: - biological - temperature - air quality - abiotic A:
Answer: abiotic
*Question*
Answer the following question given this paragraph: A low level of radiation occurs naturally in the environment. This is called background radiation. It comes from various sources. One source is rocks, which may contain small amounts of radioactive elements such as uranium. Another source is cosmic rays. These are charged particles that arrive on Earth from outer space. Background radiation is generally considered to be safe for living things. Q: What is the low level of radiation that occurs naturally in the environment called? Choices: - temperature radiation - neon radiation - consequence radiation - background radiation A:
**Answer**
background radiation
(Q).
Answer the following question given this paragraph: To understand the double slit interference pattern, we consider how two waves travel from the slits to the screen, as illustrated in Figure 27.13. Each slit is a different distance from a given point on the screen. Thus different numbers of wavelengths fit into each path. Waves start out from the slits in phase (crest to crest), but they may end up out of phase (crest to trough) at the screen if the paths differ in length by half a wavelength, interfering destructively as shown in Figure 27.13(a). If the paths differ by a whole wavelength, then the waves arrive in phase (crest to crest) at the screen, interfering constructively as shown in. Q: What kind of interference is observed when the paths differ by a whole wavelength, and the waves arrive in phase? Choices: - necessary interference - non-interference - spontaneous interference - constructive interference A:
(A).
constructive interference