which of the following best explains diffusion?high risk work licence qld cost
Then tap the card to flip it. Overall, there are more positive charges on the outside of the membrane than on the inside. Why Do Giant Pandas Have Low Libido? C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! Which of the following best explains the risks associated with pesticide applications? C. movement of molecules from an area of high concentration to an area of low concentration. These farmers and traders exchanged the domesticated plants between themselves. Diffusion is the process of movement of molecules under a concentration gradient. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW, Find a real general solution of the following systems. In its outward-facing form, the pump switches allegiances and now really likes to bind to (has a high affinity for) potassium ions. The hypertonic solution is one one side of the membrane and the hypotonic solution on the other. To move substances against a concentration or electrochemical gradient, a cell must use energy. In chemical processes, diffusion is often the central principle driving many reactions. 1. If a person goes to the hospital for surgery and requires IV (intravenous) fluids, which of the following should you expect? To see how well you know the information, try the Quiz or Test activity. The material that diffuses could be a solid, liquid or gas. Most lettuce is produced, processed, and packaged for sale in supermarkets that are a significant distance from where the product was grown. Which of the following is the main component of the cell membrane? Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. Are these pumps negatively charge since they have a high affinity for the positive ions? One of the main characteristics of . Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. In fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. Why can't the Sodium move down it's concentration gradient by using the same channel the Potassium uses? This is also seen when two liquid reactants are mixed with one another. thank you. These molecules diffuse freely in and out of the cell, along their concentration gradient. movement of molecules from an area of high concentration to an area of low concentration. With the phosphate group gone, the pump will change back to its original form, opening towards the interior of the cell. The latter may be 0.5 um while the former may be 100 um (which is more than 10X in comparative size). Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. 8.4: Osmosis and Diffusion - Chemistry LibreTexts Because of the hydrophilic and hydrophobic nature of the phospholipid, the molecule must be arranged in a specific pattern as only certain parts of the molecule can physically be in contact with water. His feet and legs were swollen with fluid. If you say something, I ll ask someone at what age erectile dysfunction starts to clean it up. If a cell is in a hypertonic solution, the solution has a lower water concentration than the cell cytosol, and water moves out of the cell until . The rate of diffusion depends on the nature of interaction between the medium and material. Can you predict, based on the first way of doing the experiment, what might change, if anything? Mehrer, H. and Stolwijk, N. A. This page titled 8.4: Osmosis and Diffusion is shared under a CK-12 license and was authored, remixed, and/or curated by CK-12 Foundation. It will bind two of them, and this triggers removal of the phosphate group attached to the pump in step 2. Which of the following best explains the significance of similarities between the farming practices for apple orchards and grape vineyards? Direct link to Yago's post Why can't the Sodium move, Posted 4 years ago. are in the same box the next time you log in. Epinephrine is taken into the cell by endocytosis; glycogen is converted to glucose in the endocytotic vesicle. Diffusion helps in the movement of substances in and out of the cells. Midlatitude climates tend to support similar agricultural crops and practices, such as wheat farming in the United States and China. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? how does the antiporter provide energy for molecules to go in the "opposite" direction? The SER detoxifies drugs and harmful substances ingested by and produced in the body. Incorrect options: Option A is incorrect because space-time compression is the shortened time or communication between two places. Which of the following compares this geographic relationship between these revolutions? 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. On the other hand, facilitated diffusion, as the term indicates, requires the presence of another molecule (the facilitator) in order for diffusion to occur. (2009). C. The SER manufactures proteins for export from the cell. The end result is an equal concentration, or equilibrium, of molecules on both sides of the membrane. What is required for filtration to occur? Which of the following is NOT one of the functions of the cytoskeleton? The protein can be toggled back and forth between these forms by the addition or removal of a phosphate group, which is in turn controlled by the binding of the ions to be transported. Direct link to Stocke's post Why does the diffusion of, Posted 7 years ago. Her much more prepared A&P student roommate quickly realized the problem and called an ambulance. For instance, one of the ways in which polyester is synthesized is by mixing the appropriate organic acid and alcohol in their liquid form. Direct link to Samuel Mayer's post In an antiporter it uses , Posted 7 years ago. Which of the following is least likely to increase the rate of diffusion? Eventually, the concentration of "stuff" on either side of them will even out. 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. For instance, in the example about the diffusion of iodine gas, if the crucible is placed in another closed container and iodine crystals are heated for an extended period of time, the rate at which the purple gas seems to disappear at the mouth of the crucible will reduce. This increases the rate at which solute and solvent molecules move, and increases collisions. If you've accidentally put the card in the wrong box, just tap on the card to take it out of the box. This type of transport is known as _____. If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. Because of the difference in sodium concentration (between the inside and outside of the cell) and due to the electrical potential difference (between the inside and outside of the cell), the SGLT is able to perform its function. Posted 7 years ago. When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again. An electrical potential difference exists whenever there is a net separation of charges in space. Which of the following best explains this change? Which of the following best explains a negative economic consequence of the Green Revolution in less developed countries as compared to more developed countries? in a symporter it makes sense that the flow of one ion should cause other molecules to go along with it, however in an antiporter, what causes the other molecule to move up its conc. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient". What organelle degrades old, worn-out organelles and cell components? & y_1^{\prime}=3 y_2 \\ Although one of these refers to chemical properties and the latter social interaction, both are examples or diffusion. In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. Similarly, if a canister of liquid nitrogen leaks a little, nitrogen gas that escapes would quickly diffuse into the atmosphere. Which of the following is the best situation for maintaining homeostasis? The image is a simple representation of the diffusion of one particle in another medium. What Is Diffusion? - Definition, Types & Examples Of Diffusion - BYJUS What four steps should you take to reduce your risk for foodborne illnesses? Direct link to Zaeen Iqbal's post i dont quite understand t, Posted 7 years ago. If the concentration of dextrose in the solution is increased to 5%, the cell is now in a(n): The total solute concentration of a red blood cell is about 2%. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). 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. In this experiment, you will experience how temperature affects the mixing of food coloring drops with water. The food coloring mixes through the hot water faster than it mixes with the cold water. A. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. Your email address is only used to allow you to reset your password. This example also shows that the diffusion of any one material is independent of the diffusion of any other substances. For example, how might this play into why coffee and tea always start with hot water? We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Direct link to long pham's post if there are more Potassi, Posted 6 years ago. Question 1 Which of the following can best explain why eukaryotic cells The Green Revolution led to an increase in food production in many places around the world, but there have been some negative consequences. Which of the following explains an impact of globalized agricultural commodity chains on consumers as compared to producers? 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. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. 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 Divide the following terms into component parts and give the meanings of the complete terms. The cell membrane allows only large molecules to diffuse into the cell. Even in large industrial reactions, when two liquids are mixed together, diffusion brings the reactants together and allows the reaction to proceed smoothly. For example, oxygen is at a higher concentration inside arteries and arterioles, when compared with the oxygen levels in actively respiring cells. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? Can't that serve the same role? gradient? 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. Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. Identify the polar and nonpolar regions of a cell membrane. Direct link to liweiong272's post Main difference: In facil, Posted 6 years ago. Labor-intensive farming of vegetables is done in small-scale plots in market gardens, while extensive grain crops are grown in large-scale fields far from the market town. All the ways scientists do investigations. Which of the following is not required for osmosis to occur? The brands listed above are trademarks of 3M. Which of the following best describes the survey methods used to delineate agricultural land and the associated settlement patterns shown in the tw. Watch what happens to the food coloring. D. The SER stores calcium ions. 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? Which of the following explains why multiple early hearths of domestication and diffusion of plants and animals arose across the world in Central America, the Fertile Crescent, the Indus River valley, and Southeast Asia? We are not permitting internet traffic to Byjus website from countries within European Union at this time. Which of the following best explains diffusion? As a simple example, a few crystals of sugar in a glass of water will slowly dissolve over time. C. The SER manufactures proteins for export from the cell. Several large cities on the East Coast provide a growing market and shorter distances for transporting market gardening products. Which of the following explains an economic benefit of cattle production using feedlots rather than grass pastures? The second sugar solution is hypertonic to the first. Can you find a safe way to heat or cool the food coloring before adding it to the water? Facilitated diffusion is powered entirely by GTP hydrolysis B. Otherwise, tap the red Don't know box. If the alveoli in our lungs fill with fluid (pulmonary edema), the distance the gases must travel increases, and their transport decreases. Farmers in less developed countries were able to increase their profits from growing and exporting high-yield grain to levels similar to those in more developed countries. Animal Gas Exchange and Transport | Organismal Biology - gatech.edu Typically, diffusion refers to the movement of molecules from high concentrations to lower concentrations. What type of membrane junction allows ions to pass directly from the cytoplasm of one cell to the cytoplasm of the adjacent cell? This barrier is called the plasma membrane, or cell membrane. On a similar note, any solute that is broken into small pieces and stirred into the solvent dissolves rapidly another indicator of molecules diffusing better when the area of interaction increases. Which one of the following processes can explain this? When red blood cells are in a hypertonic (higher concentration) solution, water flows out of the cell faster than it comes in. The membrane connections that prevent the leaking of fluid between cells are called ________. Which of the following is used to export large molecules from the cell? Which of these components add specialized functions to the plasma membrane? In simple diffusion, this process proceeds without the aid of a transport protein. D. mitochondria, Which of the following is a function of lysosomes? Diffusion is an important part of many biological and chemical processes. Which of these statements about diffusion of molecules is true? The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. This process requires some form of chemical energy. Learn more about how this experiment is based in NGSS Disciplinary Core Ideas. Which of the following solutions contains the most solute? Active transport: primary & secondary overview (article) | Khan Academy What is transported across a membrane during osmosis? does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? It is the random motion of the molecules that causes them to move from an area of high concentration to an area with a lower concentration. C. detoxify certain chemicals D. through oxidation reactions Water moves into and out of cells by osmosis. A. This means that the dry ice (or even regular ice) will evaporate faster on a warmer day, simply because each molecule is moving with greater energy and is more likely to quickly escape the confines of a solid state. Solution A contains 1% glucose, solution B contains 5% glucose. D. Golgi apparatus. (2017, April 27). Obviously, the cell could not survive in such an environment. Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. Based on this information and your understanding of osmosis and tonicity, what type of IV fluid is the doctor likely administering to try to save the life of the student suffering from water intoxication? Cells placed in a hypotonic solution will take in water across their membranes until both the external solution and the cytosol are isotonic. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. Look at the large card and try to recall what is on the other side. Actually, Sodium does go down its gradient but through specialized Sodium channels. Which of the following best explains diffusion? Direct link to Ivana - Science trainee's post yes, dimensions also play. Agricultural technology has increased the economy of scale and the carrying capacity of feedlots, increasing profits for the farmer. Diffusion will continue until the concentration gradient has been eliminated. A. Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. Direct link to Ivana - Science trainee's post Because it is faster to u, Posted 7 years ago. Stirring increases the area of interaction between the two chemicals and allows these molecules to diffuse towards each other more quickly. While science experiments at home are exciting ways to learn about science hands-on, please note that some may require participants to take extra safety precautions and/or make a mess. The number of molecules that only collide with other carbon dioxide particles within dry ice decreases. With increase in temperature, the kinetic energy of all particles in the system increases. Diffusion is affected by temperature, area of interaction, steepness of the concentration gradient and particle size. Which of the following best describes the survey system used in both locations shown? So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. How To Use Patchouli Oil For Erectile Dysfunction? A power cycle operating at steady state receives energy by heat transfer at a rate QHatTH=1800K\dot{Q}_{\mathrm{H}} \text { at } T_{\mathrm{H}}=1800 \mathrm{K}QHatTH=1800K and rejects energy by heat transfer to a cold reservoir at a rate QC\dot{Q}_{\mathrm{C}}QC at TC=600K.T_{\mathrm{C}}=600 \mathrm{K}.TC=600K. The sodium-potassium pump transports sodium out of and potassium into the cell in a repeating cycle of conformational (shape) changes. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. It can involve either the spreading of a material through a medium or the transport of a particle across a membrane. By diffusion: glucose will move from solution B to solution A. What would happen if a cell dissolved in water, like sugar does? One of the most important pumps in animal cells is the, Not only does the sodium-potassium pump maintain correct concentrations of Na. Banana plants were brought to Central America from Southeast Asia to be grown closer to markets in the United States and Canada. If you're seeing this message, it means we're having trouble loading external resources on our website. If for example there are alot of sodium ions outside, their positive charges will repel and like atoms don't like being near eachother so they flow to the other side if there's a way to. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } Put the food coloring back where you found it. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. The image shows the movement of an insoluble molecule from the extracellular space towards the cytoplasm. { "8.1:_Concentrations_of_Solutions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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which of the following best explains diffusion?
which of the following best explains diffusion?