which of the following best explains diffusion? which of the following best explains diffusion?

Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? The high energy hot water model diffusion is important because its how we get oxygen to all the cells in our bodies. This way, the capillaries remain at a low carbon dioxide concentration, allowing the constant movement of the molecule away from cells. Which of the following is most likely to move through the cell membrane by facilitated diffusion? Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. Each cell has a long tail that moves in a whip-like manner. 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. In an antiporter it uses the energy of the ions flowing down their concentration gradient. Between 1950 and 1990, wheat production in India in average pounds per acre more than tripled, which allowed India to meet its populations need for food. Which of the following best explains the process illustrated by the image? A. Imagine you have a cup that has \(100 \: \text{mL}\) water, and you add \(15 \: \text{g}\) of table sugar to the water. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? Simple diffusion can be disrupted if the diffusion distance is increased. Electrochemical gradients and the membrane potential. Which of the following solutions contains the most solute? In the case of a cell, positive and negative charges are separated by the barrier of the cell membrane, with the inside of the cell having extra negative charges relative to the outside. does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. Water moves into and out of cells by osmosis. Diffusion is an important part of many biological and chemical processes. If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. This statement describes _____. Which of the following is not a major function of proteins in the cell membrane? That is because the molecules from the food odor havent diffused into that space yet. C. rough endoplasmic reticulum Feedlots can minimize costs associated with livestock production because feedlots do not use as much space as cattle ranching. Your email address is only used to allow you to reset your password. This process continues until the voltage across the membrane is large enough to counterbalance potassiums concentration gradient. When oxygen is moving towards tissues from capillaries, carbon dioxide is entering the bloodstream. The cell is therefore not completely permeable. In this form, the pump really likes to bind (has a high affinity for) sodium ions, and will take up three of them. Which of the following is NOT one of the functions of the cytoskeleton? Which of the following best explains the economic advantage of the type of farm-produced goods shown in the images? Imagine now that you have a second cup with \(100 \: \text{mL}\) of water, and you add \(45 \: \text{g}\) of table sugar to the water. To extend the example given above, if the block of dry ice is broken into multiple pieces, the area that interacts with the atmosphere immediately increases. Which of the following correctly compares the significance of the different technologies shown in the images? Which of the following best explains diffusion? Midlatitude climates tend to support similar agricultural crops and practices, such as wheat farming in the United States and China. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. You can also use your keyboard to move the cards as follows: If you are logged in to your account, this website will remember which cards you know and don't know so that they A fish that lives in salt water will have somewhat salty water inside itself. On the other hand, facilitated diffusion, as the term indicates, requires the presence of another molecule (the facilitator) in order for diffusion to occur. Based on the map above, explain the degree to which lettuce production takes place in the United States. Learn more about how this experiment is based in NGSS Disciplinary Core Ideas. At this balance point, the inside of the membrane is negative relative to the outside. Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration. Determine the type of membrane transport used to transport these sodium ions. 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. 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. In the South Asian country of Sri Lanka, tea is farmed as a monoculture. Solution A and solution B are separated by a semipermeable membrane. Allison Soult, Ph.D. (Department of Chemistry, University of Kentucky). Not everything can make it into your cells. Which of these statements is NOT true? By the time blood flows into capillaries in the muscle or liver, for instance, there is only a single layer of cells separating this oxygen from hepatocytes or skeletal muscle fibers. 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. Answer: Random movement of molecules is not fast enough to disperse through the larger eukaryotic cell volume, Explanation: Eukaryotic clels are much bigger than prokaryotic cells. why wouldnt cells use atp for primary active transport of glucose directly, why go through a second step? At 3M, we discover and innovate in nearly every industry to help solve problems around the world. In chemical processes, diffusion is often the central principle driving many reactions. Because it is faster to utilize already available ATP through the electrochemical gradient. The second sugar solution is hypertonic to the first. Direct link to Zaeen Iqbal's post i dont quite understand t, Posted 7 years ago. 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. Which of the following explains the prevalence of banana plantations in Central America? The images show examples of agricultural technology developed during different time periods. Limited farmland encourages intensive farming with intercropping to produce high yields. Cytosol is composed of water and other molecules, including enzymes, which are proteins that speed up the cell's chemical reactions. A. Golgi apparatus Which cell junctions prevent substances from passing between adjacent cells? Epinephrine is taken into the cell by endocytosis; glycogen is converted to glucose in the endocytotic vesicle. A cell is isotonic to the surrounding 4% dextrose solution. Would remain unchanged B. What will happen to a freshwater fish in the ocean? It mainly occur in liquid and gaseous substance as their particle can easily move from one place to another. This results in swelling of the cell and potential hemolysis (bursting) of the cell. By osmosis: water will move from solution A to solution B. molecules move through transport proteins that have been activated by ATP. Glucose is the most commonly used energy source by human cells because (Points: 1) this is the most abundant macromolecule available for cellular respiration. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? What four steps should you take to reduce your risk for foodborne illnesses? Which of the following best explains diffusion? Examples of molecules that can easily diffuse across the plasma membrane include carbon dioxide and oxygen gas. The plasma membrane (see figure below) is made of a double layer of special lipids, known as phospholipids. Adult should review each experiment and determine what the appropriate age is for the students participation in each activity before conducting any experiment. Water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. Passive processes that move substances across membranes ________. 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? So something must protect the cell and allow it to survive in its water-based environment. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. Image 2 shows an innovation that occurred in the Second Agricultural Revolution, reducing the amount of labor needed and increasing crop yields. C. The SER manufactures proteins for export from the cell. 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. The electrochemical gradients set up by primary active transport store energy, which can be released as the ions move back down their gradients. A primary active transport process is one in which __________. As an example, while gases and small molecules like methane or water can diffuse freely across a plasma membrane, larger charged molecules like carbohydrates or nucleic acids need the help of transmembrane proteins forming pores or channels. What part of a cell membrane is usually in contact with the interstitial fluid? Diagram of a sodium-glucose cotransporter, which uses the energy stored in a sodium ion gradient to transport glucose "uphill" against its gradient. Also, think about where you see this happen in other places. Epinephrine diffuses through the plasma membrane; the hormone dimerizes in the cytosol. One of the most important pumps in animal cells is the, Not only does the sodium-potassium pump maintain correct concentrations of Na. Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. Which of the following best explains why farmers would plant both strawberries and watermelons in the same field? The images show devices developed during the Second Agricultural Revolution. In facilitated diffusion, molecules only move with the aid of a protein in the membrane. 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. thank you. yes, dimensions also play a role in the case of transport. Once again, as the concentration of this gas increases within the cell, it diffuses outwards towards capillaries where the force of flowing blood removes the excess gas from the tissue region. The latter may be 0.5 um while the former may be 100 um (which is more than 10X in comparative size). If a route such as a channel or carrier protein is open, sodium ions will move down their concentration gradient and return to the interior of the cell. B. We are not permitting internet traffic to Byjus website from countries within European Union at this time. Simple diffusion is relevant in chemical reactions, in many physical phenomena, and can even influence global weather patterns and geological events. Diffusion occurs when the spontaneous net movement of particles or molecules spreads them from an area of high concentration to an area of low concentration through a semipermeable membrane. In simple diffusion, this process proceeds without the aid of a transport protein. 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? Look at the large card and try to recall what is on the other side. Direct link to long pham's post if there are more Potassi, Posted 6 years ago. shouldn't it be positively charged? After addition of 1.00mL1.00 \mathrm{~mL}1.00mL of 2.00102M2.00 \times 10^{-2} \mathrm{M}2.00102M NaCl\mathrm{NaCl}NaCl, the potential changed to 0.1846V-0.1846 \mathrm{~V}0.1846V. Calculate the Na+\mathrm{Na}^{+}Na+concentration of the original solution. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). Which of the following best explains diffusion? Which of the following statements is best supported by the images? The cell membrane lets certain substances enter the cell and keeps certain substances out of the cell. What organelle degrades old, worn-out organelles and cell components? D. The SER stores calcium ions. And sodium is highly concentrated outside of the cell, so that's where it goes during active transport considering it is low to high concentration. This statement describes _____. Both systems require geometric calculations to survey property lines. Wheat was first domesticated in Mesopotamia because of a favorable climate and a great diversity of wild grains that led to crossbreeding of seeds. The phospholipid is a lipid molecule with a hydrophilic ("water-loving") head and two hydrophobic ("water-hating") tails. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. 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. Posted 7 years ago. Which of the following is used to export large molecules from the cell? Direct link to l's post Questions: The cell membrane allows the cell to stay structurally intact in its water-based environment. 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. What transport process can create a concentration gradient for sodium across the plasma membrane? With increase in temperature, the kinetic energy of all particles in the system increases. Primary and secondary active transport. Active transport mechanisms can be divided into two categories. The molecules move from a region of higher concentration to a region of lower concentration until the concentration becomes equal . Na+ This is because in hot water, the water molecules have more energy and are moving faster than the molecules of cold water. Active transport works by using a phosphate group from ATP to change the shape of the protein and thus do work. Therefore, the rate of diffusion of the gas into air also increases. C. The SER manufactures proteins for export from the cell. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. D. Golgi apparatus. However, for molecules in the periphery, rapidly moving molecules in the air also influence their movement, allowing them to diffuse into the air. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. 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. What do you predict will happen to the person's cells? One of the main characteristics of diffusion is the movement of molecules along the concentration gradient. Which of the following best compares a technological consequence of the Green Revolution in more developed and less developed countries? Water moves into and out of cells by osmosis. When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again. If you've accidentally put the card in the wrong box, just tap on the card to take it out of the box. Biologydictionary.net Editors. It s an accident, and I got a piece of land cheaply. Privacy Policy and diffusion: [noun] the state of being spread out or transmitted especially by contact : the action of diffusing. C. movement of molecules from an area of high concentration to an area of low concentration. Even though this is random non-directed movement, with a large bulk, it can create a scenario where there is no net movement of gas from the container. A red blood cell will swell and undergo hemolysis (burst) when placed in a hypotonic solution. The township-and-range survey system was based on a geometric grid pattern, while the long-lot system was a rectilinear pattern based upon waterways or roads. Type of active transport in which sodium and potassium are pumped across a membrane using ATP, Type of passive process in which water is moved through aquaporins, Type of passive process in which molecules move across the plasma membrane down a concentration gradient, Type of active process in which the cell engulfs extracellular substances by phagocytosis or pinocytosis. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Which of the following best describes the settlement patterns shown in the images? The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. LEFT ARROW - move card to the Don't know pile. The tonicity of the IV fluid doesn't matterthe patient won't be in the operating room that long so any tonicity would be OK for a couple of hours. A solution that contains fewer solutes than the cell is ________ to the cell. Na+ Ions move easily through water, which is polar, but cannot pass directly through the lipid (nonpolar) part of the cell membrane. The two images represent two different methods of raising livestock in the United States. Some molecules can go through the cell membrane to enter and leave the cell, but some cannot. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Domesticated animals such as cattle, horses, pigs, and chickens were introduced to the Americas by European colonizers. 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. In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. start superscript, 2, comma, 3, end superscript, start superscript, 4, comma, 5, end superscript. Lettuce production in the United States is an example of commercial farming. 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. No, because the potassium is highly concentrated in the cell, and so that's where the molecules must go(based on active transport going low concentration to high concentration). What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Which of the following best describes the impacts of the Second Agricultural Revolution? What type of membrane junction allows ions to pass directly from the cytoplasm of one cell to the cytoplasm of the adjacent cell? Use these flashcards to help memorize information. See our At equilibrium, movement of molecules does not stop. Cells may lyse when placed into a hypertonic environment. While this could be facilitated by other molecules, it does not directly involve high-energy molecules such as adenosine triphosphate (ATP) or guanosine triphosphate (GTP). Legal. The two images show different agricultural methods. Your cells have a plasma membrane that helps to guard your cells from unwanted intruders. \end{aligned} If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. Obviously, the cell could not survive in such an environment. Otherwise, tap the red Don't know box. Epinephrine binds to a cell-surface receptor; the activated receptor catalyzes the conversion of glycogen to glucose. ", Biologydictionary.net Editors. What assists the movement of substances by facilitated diffusion? Direct link to Yuya Fujikawa's post Hi, I'm just a little cur, Posted 5 years ago. Question 16 30 seconds Q. movement of molecules from an area of high concentration to an area of low concentration. The long-lot system results in population clustered along a waterway, whereas the metes-and-bounds system results in a random, dispersed population pattern. Solution A contains 1% glucose, solution B contains 5% glucose. Instead of feeling drunk, she felt nauseated, developed a severe headache, began to get confused, and then became unconscious. Explanation: When a substance moves from higher concentrated area to a lower concentrated area, is called as diffusion. The cytoplasm does not include the nucleus. For instance, when water is mixed with glycerol, over time the two liquids diffuse radially into each other. Sheep production is an example of extensive agriculture requiring large pastures, whereas poultry production is an example of intensive agriculture often practiced indoors. When placed in a hypertonic solution, a red blood cell will lose water and undergo crenation (shrivel). y1=3y2y2=12y1. Everything in the cell sits in the cytosol, like fruit in a Jell-o mold. During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. Facilitated diffusion is powered entirely by GTP hydrolysis B. In fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. The use of improved plant hybrids and agricultural chemicals. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. 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. "Diffusion." The hypertonic solution is one one side of the membrane and the hypotonic solution on the other. Direct link to Srichchha Pradhan's post There are certainly more , Posted 6 years ago. You would need to create a new account. Primary active transport, secondary active transport, exocytosis, and endocytosis are all what type of process? When these molecules collide with one another, there is a change in the direction of movement as well as changes to momentum and velocity. It is simply the statistical outcome of random motion. As an example, let's suppose we have a high concentration of sodium ions in the extracellular space (thanks to the hard work of the sodium-potassium pump). Can't that serve the same role? answer choices The English language initially diffused to North America through the process of relocation diffusion. (2017, April 27). Nerve cells do not have centrioles. In less developed countries, pesticides are typically applied by hand, whereas pesticides are typically applied by tractors or aircraft in more developed countries. What is transported across a membrane during osmosis? Identify the polar and nonpolar regions of a cell membrane. If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. The brands listed above are trademarks of 3M. Secondary active transport involves the movement of a substance into a cell through a protein channel with its concentration gradient. In an isotonic solution, the flow of water in and out of the cell is happening at the same rate. Divide the following terms into component parts and give the meanings of the complete terms. Philibert, J. A process that requires energy to move a substance against its concentration gradient is called: The Na+/K+ pump transports three sodium ions out of the cell for every two potassium ions moved into the cell. To move substances against a concentration or electrochemical gradient, a cell must use energy. What would happen if a cell dissolved in water, like sugar does? Which of the following best explains diffusion? 1. Retrieved from https://biologydictionary.net/diffusion/. Which of the following statements most accurately compares these two agricultural practices? The difference in the concentrations of the molecules in the two areas is called the concentration gradient. Background. In secondary active transport, the movement of the sodium ions down their gradient is coupled to the uphill transport of other substances by a shared carrier protein (a. The sugar dissolves and the mixture that is now in the cup is made up of a solute (the sugar) that is dissolved in the solvent (the water). Direct link to liweiong272's post Main difference: In facil, Posted 6 years ago. O To edit the mRNA strand and make it ready to leave the nucleus. The rate of diffusion of a gas across a surface is controlled by the following: k, the gas diffusion constant; A, the area for gas exchange; P2-P1, the difference in partial pressure of gas on either side of diffusion barrier; D, the distance across which the gas must diffuse (thickness of diffusion barrier) This results in crenation (shriveling) of the blood cell. Mr. Weddington was admitted to the hospital with chronic heart failure. Explain the components present in a phospholipid. To see how well you know the information, try the Quiz or Test activity. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. Several large cities on the East Coast provide a growing market and shorter distances for transporting market gardening products. Question 12 30 seconds Q. Similarly, two miscible liquids will also diffuse into each other to form a uniform solution. 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. 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. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. When red blood cells are in a hypertonic (higher concentration) solution, water flows out of the cell faster than it comes in. The image shows the movement of an insoluble molecule from the extracellular space towards the cytoplasm. Which of the following best explains diffusion? Which of the following is most likely to move through the cell membrane by facilitated diffusion? In general, the inside of a cell has a higher concentration of potassium (K, If sodium ions are outside of a cell, they will tend to move into the cell based on both their concentration gradient (the lower concentration of Na, The combination of concentration gradient and voltage that affects an ions movement is called the. He should be given a hypotonic drip to draw fluid out of his cells. Diffusion is the process of movement of molecules under a concentration gradient. Technological innovations, such as the devices shown in the images, and increased agricultural productivity led to better diets, longer life expectancies, and more people available for work in factories. Question 56. Which of the following scenarios best explains the Columbian Exchange? Direct link to Samuel Mayer's post In an antiporter it uses , Posted 7 years ago. The cotransporter accomplishes this by physically coupling the transport of glucose to the movement of sodium ions down their concentration gradient. Animal cells tend to do best in an isotonic environment, where the flow of water in and out of the cell is occurring at equal rates. An example of this is the way the noxious smell of ammonia gas spreads in air.