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Psychoactive drugs are in a specific category. They significantly impact the body's central nervous system, altering a person's normal activities. A person using psychoactive drugs can experience...

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The answer to this question is yes... and no. It is important to first understand what psychoactive drugs actually are, because normally, the use of the word "psychoactive" often conjures images of...

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This is a multi-part question, so I will only be able to consider each of your questions in brief. Lipolysis simply means the breakdown of fats in the body, and triglycerides are a kind of simple...

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the nitric acid will not interfere with your analysis to find the mass of silver in the alloy. Some of the nitric acid is used to oxidize the Ag and Cu to their +1 and +2 states respectively,...

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Unless you have been given other information about the exact nature of this solution, I feel that this may be a trick question. Remember that molarity (M) is defined as the number of moles of a...

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In a neuron, the movement of Na+ and K+ across the membrane occurs at specialized parts of the axon called Nodes of Ranvier—gaps between the protective glial cells that insulate the passage of...

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Because there are many different tissue types that make up both the heart and lungs, we will focus on only one type for each. The heart is made up of a specialized type of tissue called cardiac...

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To solve this question, we first need to write the balanced chemical equation for the reaction between oxygen (O2) and ethanol (C2H5OH). The same can be written as: C2H5OH + 3 O2 -> 2 CO2 + 3...

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As the second part of the post suggests, consumption varies widely among different parts of the world. For this reason, it can be misleading to speak of a “global overconsumption” problem....

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The question gives a great clue to the answer. Here we start with a system (Nerf gun and dart) that is at rest with velocity 0. Given the equation for basic momentum (p=mv ), the total momentum...

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Your eye is able to perceive light and visual stimuli because of the way it directs light onto the retina. When light enters the eye through the transparent cornea, it passes through the pupil...

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1.) In the first place, this molecule doesn't exist under normal circumstances. On the periodic table, Aluminum (Al) has a charge of +3, while the polyatomic anion hydroxide (OH) has a charge of...

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The answer you got is not correct; the correct answer is really ΔV = 8.4 x 107 V. A Van de Graff generator is not the most satisfactory model to perform this analysis, because the electric field it...

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The lamina propria of the duodenum possesses finger-like extensions known as villi, which further elongate and branch out into even finer structures called microvilli. The villi and microvilli...

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This question is based on stoichiometry, and hence we need a balanced chemical equation for the reaction. The reaction can be written as the following: 2Al + 6HCl -> 2AlCl3 + 3H2 Here, 2 moles...

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In the lungs specifically (not counting the nose, mouth, or trachea), various cells serve individual functions. Alveolar macrophages (dust cells), for example, play a critical role in clearing the...

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Carbohydrates, lipids, and proteins all play a vital role in the nutrition of the human body. All three are taken in through foods and used specifically by the body for certain functions. To begin,...

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In order for a muscle to contract, a neurotransmitter must cross a synapse between a motor neuron and a muscle fiber. One of the strongest and most common neurotransmitters that has this function...

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Down Syndrome is also known as Trisomy 21, because a failure of chromosomes to properly separate during meiosis leads to the presence of an extra (a third) 21st chromosome in all of the somatic...

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Histologically, the duodenum is similar to the other tubes that comprise the gastrointestinal tract. It therefore possesses similar tissues (groups of cells working together for a common purpose)...

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Chemical B, which floods the muscle cells' cytoplasm with Ca2+, would not be a good choice for a muscle relaxer. In order to determine this, one must understand the function of Ca2+,and calcium, in...

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Chemical A, a chemical that binds to and blocks acetylcholine receptors of muscle cells, could be considered a good choice as a muscle relaxer. We can determine this through understanding the role...

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Chemical D, which prevents the binding of Ca2+ to troponin, could be a good choice for a muscle relaxer prior to surgery. The function of Ca2+ within the skeletal muscle cells is to activate muscle...

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Chemical E, a chemical that mimics the function of acetylcholine, could not serve as a muscle relaxer. We can determine this through understanding the function of acetylcholine in the...

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Penguins remain one of the most interesting and beloved creatures on Earth. This flightless seabird primarily resides in cold climates below the Equator. The majority of the penguin population is...

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The digestive system is a one-way system. Food enters the mouth, gets digested, and wastes exit the body via the anus. The mouth is the start of the digestive system, and it does both mechanical...

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The boiling point is the temperature at which a substance changes from the liquid phase to the gaseous phase. The most common day to day example of boiling is the boiling of water (especially while...

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Population genetics is a branch of biological studies. Population geneticists study the genetic composition of a given population and study the changes in genetic composition in that population...

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Our body requires a large number of chemicals for its operation and maintenance. In fact, almost 60 elements are present in our bodies. Each chemical has its own purpose in our body. The two...

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Arteries carry blood, oxygen, and nutrients away from the heart. Coronary refers to the heart, so coronary arteries are arteries that supply the heart. Coronary artery disease develops when those...

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My recommendation would be to create a percussion instrument. This focuses on instruments that create sound by being struck, shaken, or scraped. A homemade drum should be fairly easy to piece...

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The endocrine and nervous system are controlled by the pituitary gland. The pituitary gland is located in the brain behind the bridge of the nose and is about the size of a pea. It is attached to...

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The liver is the heaviest internal organ in the human body and is also the largest gland in our body. Although there may be variations in its weight, the average weight of the liver is about 1.5...

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I will explain the structure of the human heart, including the tissues and cells, here. The human heart is shaped roughly like a human fist and consists of four chambers: two atria and two...

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Chaucer's General Prologue is a robust celebration of human diversity, yet it also engages in social stereotypes. As an Estates Satire, its purpose is to show the various members of the medieval...

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Students can often be confused about the differences between mitosis and meiosis. Perhaps it is because the names are so similar or because the processes share the same phase names as the process...

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Because human infants are unable to fend for themselves, they are wholly dependent upon caretakers for much of their early lives. In general, newborns are not capable of (nor interested in)...

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Osteoporosis is a condition where your bones get weaker over time. Bone tissue, the strongest of the tissue cells, naturally looks a bit like a spider's web: it is densely compacted but has "holes"...

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Raising cattle and using their byproducts has a negative effect on climate in several ways. In many parts of the world, people consume a substantial amount of beef, relying on it as a major source...

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Numerous studies have shown that cars are a major contributor of greenhouse gases in the atmosphere which are a cause of climate change. In the United States alone, exhaust from cars and trucks are...

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George Herbert Mead’s theory of "the I and the me" characterizes the "I" as the active aspect of personality, analogous to the Freudian "ego," and the "me" as the socialized aspect, consisting of...

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I suppose that chainsaws contribute to the destabilization of the atmosphere because they allow people to quickly and easily cut down trees. While all plants help to regulate the levels of carbon...

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While I cannot provide you with a direct answer to the question—that is, a summary of the article—I will provide some facts and leads that will hopefully point you in the right direction and help...

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There are three main ways in which individuals who work around radiation protect themselves from over-exposure. These three ways are typically referred to as “time, distance, and shielding.” All...

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Iodine 131 is a radioisotope of the element iodine. It is a radioactive material and undergoes decay. This means that its concentration decreases over time. The half-life (the time taken by a...

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In some ways, this question is asking about an overall process and then naming specific types of that process. Both osmosis and diffusion are types of passive transport. This means that both...

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The first thing one would notice if Earth had no atmosphere would be an absence of life. The Earth would have no way to keep warm or cool enough to support life, so the Earth would be barren of all...

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A region's high temperatures can affect many factors within an environment. Many species cannot survive in either hot or cold temperatures. Seeds will not germinate if the ground is too cold or...

Hello, let's solve this problem! So we have a 1000 kg car travelling at 28 m/s and we wish to make it stop after braking for a total distance of 105 m . We want to know what the magnitude...