• Science
Understanding the implications of this damage depends upon understanding the nature of the damage itself. "Ciliated" refers to cells that have hair-like structures on them, which can move and...

• Science
What’s important to keep in mind about the human brain is that, despite its complexity, it can only effectively handle little bits of information at a time. The complexity of a human brain is...

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Adenosine triphosphate (ATP) is indeed a vital component of living organisms. ATP is an organic chemical that provides energy to the cells of living organisms. Without it, nerve impulses don't...

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While most people think of the skeleton as being simply "what holds you up," it has several features that are a bit more complex than this. The skeleton provides a strong yet flexible framework...

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Sexual reproduction is the process by which genetic information is taken from two different individuals and combined. It is important to note that the combination of different sexes is not...

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DNA is the molecule that controls heredity. It is passed down from generation to generation. A species survives when its best offspring reproduce, thus passing on the most desirable genes. These...

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In 1933, Maurice Tainter, a clinical pharmacologist from Stanford University, found that the ingestion of 2-4-Dinitrophenol (DNP) resulted in huge weight loss. Shortly thereafter, it was promoted...

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The Virginia opossum is widely known throughout North America. The "Virginia" epithet is somewhat misleading because nothing about the state of Virginia is particularly relevant to the animal. Its...

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The platypus is an interesting choice for comparison to a human, because the platypus is a good example of nature defying our methods of categorizing life. The platypus and humans are both mammals....

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A survey question posed to 743 people gets 569 positive answers. We are asked to find a 99% confidence interval of the true population proportion. (1) In a TI-83/84 calculator: Hit Stat -> Tests...

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Because this question is categorized under science, I am going to answer it based on the genetic basics that were originally laid out by Gregor Mendel rather than discussing Richard Dawkins's book...

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This problem can look somewhat daunting at first glance, but just start with the information that you have and use it to fill in equations that you have already likely been told in class. I would...

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This is a molarity problem, and molarity is defined by the moles of solute in one liter of solution. In this case, the calcium chloride is the solute (thing being dissolved) and the solution is...

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Many molecules are hygroscopic, meaning that they are able to absorb water from their environment, including water vapor in the air. This means that hygroscopic molecules, unless completely dried...

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I believe that this question is asking whether or not the statement provided is true. If that is the case, then the statement is false. Generally speaking, a stimulus precedes a behavior. In...

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Yes, if you want to put it very simply, you could summarize operant conditioning as a behavior-response relationship where the behavior elicits the response. However, I would argue that it doesn’t...

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Green sea turtles are found in the Pacific, Atlantic, and Indian oceans. Despite that vast area, the turtles are sensitive to heat and cold; therefore, the turtles are limited to the warmer parts...

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This question is completely open to the subjective choice of each person being asked the question, so feel free to pick your favorite organelle and explain why it is your favorite. In my...

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The hypothesis written here is not very clear; however, it is possible to answer your question as it is asking for what the independent and dependent variables are. The independent variable is the...

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You have done a really nice job so far of setting up a controlled experiment. I do not know your initial hypothesis, but I presume that it basically says, "if plants are grown in different colors...

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Living soil refers to soil that has a community of organisms within the soil that work together to break down organic matter. That activity provides nutrition that is extremely important to plants...

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The nature of a model is that it accurately represents only a portion of the modeled object; for example, model trains accurately represent the shape and proportions of full-sized railroad...

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Utilizing this equation depends on whether you want to analyze the rate for selected portions of your experiment time or the entire duration of the experiment. This is important, because your rate...

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Nutrition is a field of growing interest to many people. At the base, it is about learning and understanding how the body uses food for energy and how best to provide for the body's needs through a...

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One major problem with such a study is the very premise of the study. By grouping together diseases such as pneumonia with autism, the study asserts that being autistic should be considered a...

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I would like to clarify that tetany is not a disease. Tetany is a symptom that could be linked to several diseases; therefore, tetany does not have a singular cause. Tetany is involuntary muscle...

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Density is defined as mass per unit volume. In other words, density is the amount of matter within a given amount of space. Water has a density of 1.0 gram per milliliter. Since one milliliter...

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This is a great question due to the fact that it correctly identifies discrepancies that exist between the scientific definition and usage of the word "theory" and how the general public defines...

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This question does correctly identify the fact that no hypothesis is perfect. As a start, your initial hypothesis is a fairly decent hypothesis. It is specific in its wording. Additionally, the...

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This is technically more than one question. I'll answer about rickets and osteoporosis. Rickets is a medical condition that results in the softening and weakening of bones in children. The most...

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To solve using parallelogram method, draw the two vectors on the same initial point. (See Fig.1 in the attachment.) Then, draw another two lines in such a way that a parallelogram is formed. (See...

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The items listed in the question are better known as the 6 essential nutrients. Essential nutrients are compounds that the human body does not make or is not capable of making in quantities large...

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To a certain extent, it does not matter which answer you provide. The phrasing of the question makes the answer to it subjective. You could say that you prefer momentum simply because you think it...

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Einstein's theory of general relativity tells us that the curvature of space as a whole is primarily determined by mass, which in turn influences the strength of gravitation. Mass causes space to...

• Science
It is true that the word organic has changed over time, but this represents the organic usage of words in American English. (See what I did there?) When I was in high school, I learned that the...

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In this case, ultrafiltration refers to a function of the kidneys in the human body. Specifically, it is the process in which fluid passes through a semipermeable membrane. This means that some...

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Psychoactive (or psychotropic) drugs affect the central nervous system. They can alter the function of the brain, changing one's behavior, mood, thoughts, perception, and consciousness. Substance...

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The kidneys sit within either side of the posterior portion of the ribcage. They are supplied with blood by the renal artery, which branches off of the descending aorta, and they deliver...

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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,...

• Science
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....

• Science
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...