which of the following best explains diffusion?

Direct link to Srichchha Pradhan's post There are certainly more , Posted 6 years ago. An open beaker of water in equilibrium with water vapour is in a sealed container. Simple diffusion is relevant in chemical reactions, in many physical phenomena, and can even influence global weather patterns and geological events. The term cytoplasm refers to the cytosol and all of the organelles, the specialized compartments of the cell. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). Microtubules are composed of protein subunits known as: Through the microscope, you see cells swimming. Anatomy and Physiology Chapter 14 & 15 Hw/Qui, Subject pronouns and at verb's conjugation ch, Mastering A&P Chapter 3 - Cells: The Living U, David N. Shier, Jackie L. Butler, Ricki Lewis, Organizational Behavior: Managing People and Organizations, Jean Phillips, Ricky W. Griffin, Stanley Gully. Some transport processes use transport proteins in the plasma membrane, but do not require ATP. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? You would need to create a new account. C. movement of molecules from an area of high concentration to an area of low concentration. The high energy hot water model diffusion is important because its how we get oxygen to all the cells in our bodies. "Diffusion." Compared to plain milk or fresh fruit, these value-added agricultural goods significantly increase the price of the farm products sold and increase earnings for farmers. Which of the following best explains diffusion? In chemical processes, diffusion is often the central principle driving many reactions. In the South Asian country of Sri Lanka, tea is farmed as a monoculture. Water moves into and out of cells by osmosis. A. Incorrect options: Option A is incorrect because space-time compression is the shortened time or communication between two places. Primary active transport, secondary active transport, exocytosis, and endocytosis are all what type of process? Diffusion in the human body is necessary for the absorption of digested nutrients, gas exchange, the propagation of nerve impulses, the movement of hormones and other metabolites towards their target organ and for nearly every event in embryonic development. The image shows the movement of an insoluble molecule from the extracellular space towards the cytoplasm. Which of the following best explains a negative economic consequence of the Green Revolution in less developed countries as compared to more developed countries? The English language became a widely spoken language in North America in the twentieth century. However, the township-and-range system uses simplified calculation to create a more ordered landscape. Direct link to Zaeen Iqbal's post i dont quite understand t, Posted 7 years ago. In class, do you typically sit evenly spaced or all scrunched together? Philibert, J. Overall, there are more positive charges on the outside of the membrane than on the inside. C. detoxify certain chemicals D. through oxidation reactions Which of the following is not a passive process? The SER detoxifies drugs and harmful substances ingested by and produced in the body. The end result is an equal concentration, or equilibrium, of molecules on both sides of the membrane. A. synthesize proteins The concentration of sodium ions is lower inside the cell than in the extracellular fluid, while the reverse is true for potassium ions. A typical grocery store in the United States may sell oranges grown primarily in California during part of the year and oranges grown primarily in South Africa during a different part of the year. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. gradient? Because of the increased capital investment required to produce new crop varieties using technology that was pioneered in more developed countries, there was an increase in wealth disparity in many farming communities in less developed countries. At 3M, we discover and innovate in nearly every industry to help solve problems around the world. By diffusion: glucose will move from solution B to solution A. A) greater collision frequency and more effective collisions B) increasing the number of particles in a given volume increases collision frequency C) weakens the bonds in the reactants so that they are easier to break D) better orientation of the reactant Which of the following concepts best explains the driving forces of The two images represent different agricultural land survey patterns. Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. Which of the following best explains diffusion? answer choices The English language initially diffused to North America through the process of relocation diffusion. The river in the long lot survey system provided better access to waterways to transport goods to market. Which of the following is not required for osmosis to occur? A fish that lives in salt water will have somewhat salty water inside itself. Question 1 Which of the following can best explain why eukaryotic cells tonicity: the amount of solute in a solution. Epinephrine is taken into the cell by endocytosis; glycogen is converted to glucose in the endocytotic vesicle. In this form, the pump really likes to bind (has a high affinity for) sodium ions, and will take up three of them. Nuclear pores connect the cytoplasm with the nucleoplasm and allow substances to move between the two areas. The second sugar solution is hypertonic to the first. The cotransporter accomplishes this by physically coupling the transport of glucose to the movement of sodium ions down their concentration gradient. Which of the following best explains diffusion? In comparing two solutions of unequal solute concentration, the solution with the higher solute concentration is hypertonic, and the solution with the lower solute concentration is hypotonic. Each of these factors, independently and collectively can alter the rate and extent of diffusion. Distinguish among hypotonic, hypertonic, and isotonic solutions. In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. ", Biologydictionary.net Editors. If the cell is moved to a 6% dextrose solution, then predict what will happen to the cell. What part of a cell membrane is usually in contact with the interstitial fluid? What Is Diffusion? - Definition, Types & Examples Of Diffusion - BYJUS Explain why and how passive transport occurs; Understand the processes of osmosis and diffusion; Define tonicity and describe its relevance to passive transport; Plasma membranes must allow certain substances to enter and leave a cell, while preventing harmful material from entering and essential material from leaving. concentrated salt solution. Which one of the following processe | Filo If a person goes to the hospital for surgery and requires IV (intravenous) fluids, which of the following should you expect? Hi, I'm just a little curious, why can't 3 potassium ions be pumped out and 2 sodium ions pumped in(the other way around)? Which Of The Following Best Explains Diffusion Quizlet? Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out. When the roommate told the Emergency Department doctor what had happened, the doctor quickly began administering IV (intravenous) fluids. This can even be observed visually by the addition of different colored dyes to each of the liquids. The plants and animals diffused to a region with climate and geography similar to that of their point of domestication. This is related to both the mass of the molecule and its surface area. Which of the following best describes the differences in the agricultural practices and land use for these products? Similarly, the medium in which diffusion occurs could also be in one of the three physical states. The cell is therefore not completely permeable. QUESTION 28 Which of the following best explains the role of transcription in a cell? Midlatitude climates tend to support similar agricultural crops and practices, such as wheat farming in the United States and China. For instance, one of the ways in which polyester is synthesized is by mixing the appropriate organic acid and alcohol in their liquid form. This may seem like a complicated cycle, but it just involves the protein going back and forth between two forms: an inward-facing form with high affinity for sodium (and low affinity for potassium) and an outward-facing form with high affinity for potassium (and low affinity for sodium). Passive Transport | Biology I - Lumen Learning Main difference: In facilitated diffusion, the solute moves down the concentration gradient, from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. Biologydictionary.net Editors. Question 12 30 seconds Q. Diffusion Explained with Food Coloring | 3M Science at Home Even in large industrial reactions, when two liquids are mixed together, diffusion brings the reactants together and allows the reaction to proceed smoothly. For instance, the channel protein that transports potassium ions has a much higher affinity for that ion than a very similar sodium ion, with nearly the same size and charge. to send you a reset link. This apparent slowing down is due to the fact that, over time, the larger container begins to have enough iodine gas that some of it will be moving backwards towards the crucible. Grain farming is an extensive farming practice that can maximize profits in part by lower land costs, lower transportation costs, and imperishability of the product. Have you ever colored a picture with marker and noticed that two touching colors begin to bleed together? How To Prolong Ejaculation During Intercourse? Can you find a safe way to heat or cool the food coloring before adding it to the water? In the context of the Second Agricultural Revolution, which of the following trends is represented in these images? What type of cellular extension have you observed? Never needs the presence of any other molecule C. Diffusion of every molecule is dependent on its concentration gradient and independent of the concentration of other molecular species in the medium D. All of the above, 2. yes, dimensions also play a role in the case of transport. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. Can you predict, based on the first way of doing the experiment, what might change, if anything? This experiment was selected for Science at Home because it teaches NGSS Disciplinary Core Ideas, which have broad importance within or across multiple science or engineering disciplines. The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . It is simply the statistical outcome of random motion. Palm oil, an edible vegetable oil used in processing packaged food products, is obtained from the fruit of the oil palm tree, grown only in the tropics. Which of the following is the best situation for maintaining homeostasis? Plantation farming is considered to be an intensive farming practice because it requires large inputs of labor and capital to produce the crop. B. Direct link to Dovid Shaw's post how does the antiporter p, Posted 7 years ago. Which of the following processes require the use of protein carrier molecules? Which of the following explains how global demand for palm oil has proved beneficial and detrimental f. Palm oil exports provided substantial corporate profits, but the growth in the industry resulted in heavy deforestation in both countries. This is usually not directed in any particular manner, and can appear random. selectively permeable: the characteristic of a membrane that allows some substances through but not others. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. To move substances against a concentration or electrochemical gradient, a cell must use energy. Increase C. Decrease D. It would depend on the nature and temperature of the coolant, 3. What is required for filtration to occur? If you knew the answer, tap the green Know box. PS1.A: Structure and Properties of Matter, PS3.C: Relationship Between Energy and Forces. A&P lecture 1 chp 3 Flashcards | Chegg.com A substance moves by facilitated diffusion into a cell. 1. Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? If you forget it there is no way for StudyStack This process does not require energy. What part of the plasma membrane is hydrophobic? The same gas would diffuse slightly more slowly in a liquid such as water and slowest in a solid. Channels Channel proteins span the membrane and make hydrophilic tunnels across it, allowing their target molecules to pass through by diffusion. answer choices Through the process of ethnocentrism, American culture has spread throughout the world. & y_1^{\prime}=3 y_2 \\ These molecules diffuse freely in and out of the cell, along their concentration gradient. Therefore, they are NOT able to __________. Which of the following best explains why in the model the amount of land used for dairying is much smaller than the pasture used for beef cattle? This electricity can do work. Carbon dioxide would diffuse faster than bromine gas C. Integral membrane proteins that facilitate diffusion are highly specific about their cargo D. All of the above, Biologydictionary.net Editors. If the alveoli in our lungs fill with fluid (pulmonary edema), the distance the gases must travel increases, and their transport decreases. Be sure to clean up when you are done. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? The function of the plasma membrane is to control what goes in and out of the cell. Invention of the plow eased the intensive use of labor, and the innovation of mechanized farm equipment led to improved food production. Why does the diffusion of the solute down its concentration gradient release energy? When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. On the other extreme, a red blood cell that is hypotonic (lower concentration outside the cell) will result in more water flowing into the cell than out. One phosphate group from ATP is attached to the pump, which is then said to be phosphorylated. Which of the following is least likely to increase the rate of diffusion? Terms of Service. Solution A and solution B are separated by a semipermeable membrane. Diffusion and Osmosis - Difference and Comparison | Diffen answer choices The greater the difference in concentration, the quicker the rate of diffusion. Requested URL: byjus.com/biology/diffusion/, User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62. For each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. Solution A and solution B are separated by a semipermeable membrane. Though water is a polar molecule, it can also diffuse through the plasma membrane. D. Secondary active transport involves the movement of a substance into a cell with its concentration gradient. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. how does the carrier protein "harness" energy from another molecules concentration gradient? What transport process can create a concentration gradient for sodium across the plasma membrane? To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Imagine you have a cup that has \(100 \: \text{mL}\) water, and you add \(15 \: \text{g}\) of table sugar to the water. Do not mix or stir. "Permeable" means that anything can cross a barrier. Retrieved from https://biologydictionary.net/diffusion/. The phospholipid tails are ________, which make the plasma membrane impermeable to water. movement of molecules from an area of high concentration to an area of low concentration Which of the following is most likely to move through the cell membrane by facilitated diffusion? Osmosis is the diffusion of water molecules across a semipermeable membrane from an area of lower concentration solution (i.e., higher concentration of water) to an area of higher concentration solution (i.e., lower concentration of water). There are certainly more numbers of potassium ions in the cells, but remember that there are greater numbers of sodium ions outside the cell (since for every three sodium ions moved out of the cells, two potassium ions enter the cell), therefore, resulting in a net positive charge outside the cell and net negative charge inside the cell. 3.5 Passive Transport - Concepts of Biology - 1st Canadian Edition Which of the following compares this geographic relationship between these revolutions? Simple diffusion and passive transport (article) | Khan Academy Simple diffusion can be disrupted if the diffusion distance is increased. 266X15aX+baY+32b. Direct link to Yuya Fujikawa's post Hi, I'm just a little cur, Posted 5 years ago. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? \end{aligned} Think of how delicious smells from your kitchen take longer to get into your bedroom than to your living room which is located right beside the kitchen. Its tempting to simply make an argument based on stoichiometry: for every three ions of sodium that move out, only two ions of potassium move in, resulting in a more negative cell interior. Prior to this, very few animals had been domesticated in the Americas. John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, Charles Welsh, Cynthia Prentice-Craver, David Shier, Jackie Butler, Ricki Lewis, Child Psychopathology - Ch 1 Review questions. At this point, equilibrium is reached. Explanation: When a substance moves from higher concentrated area to a lower concentrated area, is called as diffusion. During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. Water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. For instance, when iodine is sublimated over a hot stove, purple fumes begin to appear and mix with air. Stirring increases the area of interaction between the two chemicals and allows these molecules to diffuse towards each other more quickly. Water leaves the cells and the cells shrink. Grocery stores sell oranges that are grown in locations with similar climates but different growing seasons. Allison Soult, Ph.D. (Department of Chemistry, University of Kentucky). (Show the details. Agricultural technology has increased the economy of scale and the carrying capacity of feedlots, increasing profits for the farmer. when it releases the ions the pump no longer has a affinity for the molecules, is this because the energy used to change the conformation of the pump knocks off electrons or does the phosphates make the pump more negative due to the negative charges on the phosphates itself? When red blood cells are in a hypertonic (higher concentration) solution, water flows out of the cell faster than it comes in. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out. AP Bio Final 2019 | Biology Quiz - Quizizz One and a Half Century of Diffusion: Fick, Einstein, before and beyond. All the examples given above were instances of simple diffusion. Through a process of passive diffusion, without the active involvement of any other molecule oxygen passes through the capillary membrane and enters cells. This is an example of: Resting membrane potential is due to unequal concentrations of: Two types of active transport via vesicles are: Which of the following best describes secondary active transport? Put the food coloring back where you found it. Predict behavior of blood cells in different solution types. With increase in temperature, the kinetic energy of all particles in the system increases. Which of the following best explains the significance of similarities between the farming practices for apple orchards and grape vineyards? As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . What type of membrane junction allows ions to pass directly from the cytoplasm of one cell to the cytoplasm of the adjacent cell? With the phosphate group gone, the pump will change back to its original form, opening towards the interior of the cell. Which of the following best explains the spatial patterns illustrated in von Thnens model? At that concentration, the solution is isotonic to the cell. The IV fluid should be isotonic to the patient's blood. Explain the components present in a phospholipid. In an antiporter it uses the energy of the ions flowing down their concentration gradient. What is required for its transport? An example of this is the way the noxious smell of ammonia gas spreads in air. While this charge ratio does make the cells interior slightly more negative, it actually accounts for only a, Instead, the sodium-potassium pump acts primarily by building up a high concentration of potassium ions inside the cell, which makes potassiums concentration gradient very steep. Direct link to priciaauy's post why wouldnt cells use atp, Posted 4 years ago. Just like the first cup, the sugar is the solute, and the water is the solvent. What process permits absorption of glucose into cells? Diffusion can either be simple diffusion and be facilitated by another molecule. Which cell junctions prevent substances from passing between adjacent cells? By what endocytosis process do some white blood cells engulf bacteria? (2017, April 27). The site owner may have set restrictions that prevent you from accessing the site. Spaeth, E. E., and Friedlander, S.K. This example also shows that the diffusion of any one material is independent of the diffusion of any other substances. Sheep production is an example of extensive agriculture requiring large pastures, whereas poultry production is an example of intensive agriculture often practiced indoors. In less developed countries, pesticides are typically applied by hand, whereas pesticides are typically applied by tractors or aircraft in more developed countries. It can involve either the spreading of a material through a medium or the transport of a particle across a membrane. Which of the following spatial patterns is best explained by bid-rent theory? fats and proteins yield too much energy for the cells to process. Most lettuce is produced, processed, and packaged for sale in supermarkets that are a significant distance from where the product was grown. Typically, diffusion refers to the movement of molecules from high concentrations to lower concentrations. Facilitated diffusion is powered entirely by GTP hydrolysis B. movement of molecules from an area of high concentration to an area of low concentration. Direct link to Ivana - Science trainee's post Because it is faster to u, Posted 7 years ago. 0 To produce a mRNA molecule to deliver the genetic instructions outside the nucleus. At any given temperature, the diffusion of a smaller particle will be more rapid than that of a larger-sized molecule. If you find an example of where hot or cold water is used for something that might involve diffusion, see if you can try it with the opposite and observe any differences in the results. Diffusion through a membrane | Cell Structure Quiz - Quizizz What do you predict will happen to the person's cells? The rate of this movement depends on the energy of the . Posted 7 years ago. Large polar molecules cannot diffuse across a biological membrane B. Are these pumps negatively charge since they have a high affinity for the positive ions? http://physrev.physiology.org/content/91/2/733, https://phys.org/news/2013-10-mechanism-sodium-potassium-revealed.html. A. movement of molecules farther away from equilibrium B. exchange of nonpolar molecules for polar molecules C. movement of molecules from an area of high concentration to an area of low concentration D. movement of molecules from where there are fewer of them to where there are more A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? movement of molecules from an area of high concentration to an area of low concentration. B. ribosome Heroes and Highlights in the History of Diffusion. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. Which of the following substances must travel across a membrane via facilitated diffusion? Great question since proteins are very large and complex they almost always have regions with different characteristics including patches that have negative or positive charges. The difference in the concentrations of the molecules in the two areas is called the concentration gradient. C. peroxisome Although one of these refers to chemical properties and the latter social interaction, both are examples or diffusion. Diffusion Definition & Meaning - Merriam-Webster A. diffusion: [noun] the state of being spread out or transmitted especially by contact : the action of diffusing. Which of the following best explains the farming practice related to plantation agriculture? Which of the following solutions will cause a red blood cell to shrink? A. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. These farmers and traders exchanged the domesticated plants between themselves. At equilibrium, movement of molecules does not stop.

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