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Which of the following best explains the differences between the patterns of land use in the township-and-range system and the long-lot system, as shown in the images? The term cytoplasm refers to the cytosol and all of the organelles, the specialized compartments of the cell. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out. Which of the following explains an economic benefit of cattle production using feedlots rather than grass pastures? 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. Plantation farming is considered to be an intensive farming practice because it requires large inputs of labor and capital to produce the crop. 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? Why can't the Sodium move down it's concentration gradient by using the same channel the Potassium uses? Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient". Not everything can make it into your cells. 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). The images show devices developed during the Second Agricultural Revolution. For instance, a gas diffuses very quickly in another gas. The plants and animals diffused to a region with climate and geography similar to that of their point of domestication. Which of the following best explains why farmers would plant both strawberries and watermelons in the same field? Secondary active transport involves the movement of water by osmosis into a cell. Epinephrine is taken into the cell by endocytosis; glycogen is converted to glucose in the endocytotic vesicle. Facilitated diffusion is necessary for the movement of large or polar molecules across the hydrophobic lipid bilayer. Direct link to Eshita's post No, because the potassium, Posted 7 years ago. Therefore, the rate of diffusion of the gas into air also increases. Which of the following best explains the significance of a similarity among locations where olives, figs, grapes and lemons are grown? This can occur with all sorts of matter, but is most commonly observed in liquids and gases. What process does water use to move across the plasma membrane? Diffusion is an important part of many biological and chemical processes. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? Incorrect options: Option A is incorrect because space-time compression is the shortened time or communication between two places. In most biological systems, diffusion occurs across a semi-permeable membrane made of a lipid bilayer. What transport process can create a concentration gradient for sodium across the plasma membrane? Privacy Policy and Here, well look in more detail at gradients of molecules that exist across cell membranes, how they can help or hinder transport, and how active transport mechanisms allow molecules to move against their gradients. For instance, one of the ways in which polyester is synthesized is by mixing the appropriate organic acid and alcohol in their liquid form. In the context of the Second Agricultural Revolution, which of the following trends is represented in these images? Which of the following best explains diffusion? A. smooth endoplasmic reticulum At the exact same time, add 2-3 drops off food coloring into each glass. Imagine you're preparing a barbecue of grilled chicken and salad for friends. This way, the capillaries remain at a low carbon dioxide concentration, allowing the constant movement of the molecule away from cells. B. smooth endoplasmic reticulum 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) Diffusion and Osmosis - Difference and Comparison | Diffen To see how well you know the information, try the Quiz or Test activity. Which of the following best explains diffusion? The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. Which of the following is the main component of the cell membrane? "Diffusion." Which of the following is most likely to move through the cell membrane by facilitated diffusion? The reaction proceeds towards completion at a faster rate. This process requires some form of chemical energy. To move substances against a concentration or electrochemical gradient, a cell must use energy. Direct link to Stocke's post Why does the diffusion of, Posted 7 years ago. Secondary active transport involves the movement of a substance into a cell through a protein channel with its concentration gradient. Even in large industrial reactions, when two liquids are mixed together, diffusion brings the reactants together and allows the reaction to proceed smoothly. The conversion from manual thread spinning to an industrial processing approach led to increased demand for raw cotton in the agricultural sector. Do you think the temperature of the food coloring might have an effect on how it diffuses? What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? "Diffusion. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. Imagine you have a cup that has \(100 \: \text{mL}\) water, and you add \(15 \: \text{g}\) of table sugar to the water. 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Muscle cells require an abundant amount of ATP to function. Some transport processes use transport proteins in the plasma membrane, but do not require ATP. 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. The kinetic energy of the molecules results in random motion, causing diffusion. Image depicting the charge and ion distribution across the membrane of a typical cell. Prior to this, very few animals had been domesticated in the Americas. Which of the following best explains a negative economic consequence of the Green Revolution in less developed countries as compared to more developed countries? What organelle degrades old, worn-out organelles and cell components? answer choices The English language initially diffused to North America through the process of relocation diffusion. Would remain unchanged B. Each cell has a long tail that moves in a whip-like manner. Simple diffusion can be disrupted if the diffusion distance is increased. B. Animal Gas Exchange and Transport | Organismal Biology - gatech.edu 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. Which of the following spatial patterns is best explained by bid-rent theory? QUESTION 28 Which of the following best explains the role of transcription in a cell? This results in swelling of the cell and potential hemolysis (bursting) of the cell. Unit 3 Culture Test | Geography Quiz - Quizizz Primary and secondary active transport. If you're seeing this message, it means we're having trouble loading external resources on our website. Question 16 30 seconds Q. For example, while oxygen gas will diffuse slightly more quickly than carbon dioxide, both of them will move more quickly than iodine gas. Concentric rings of different agricultural activities surrounding a city in the midwestern United States. In an antiporter it uses the energy of the ions flowing down their concentration gradient. 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 primary active transport process is one in which __________. The rate of diffusion depends on the nature of interaction between the medium and material. Retrieved from https://biologydictionary.net/diffusion/. See our i dont quite understand the secondary active transport. answer choices The greater the difference in concentration, the quicker the rate of diffusion. Why Do Giant Pandas Have Low Libido? While they are confined to the smaller surface area within the crucible, the rate of diffusion remains low. Your email address is only used to allow you to reset your password. For instance, when water is mixed with glycerol, over time the two liquids diffuse radially into each other. Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. The membrane potential of a typical cell is -40 to -80 millivolts, with the minus sign meaning that inside of the cell is more negative than the outside, As an example of how the membrane potential can affect ion movement, lets look at sodium and potassium ions. In less developed countries, pesticides are typically applied by hand, whereas pesticides are typically applied by tractors or aircraft in more developed countries. The electrode system developed a potential of 0.2331V-0.2331 \mathrm{~V}0.2331V when immersed in 10.010.010.0 mL\mathrm{mL}mL of the solution of unknown concentration. 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. 8.4: Osmosis and Diffusion - Chemistry LibreTexts Diagram of a sodium-glucose cotransporter, which uses the energy stored in a sodium ion gradient to transport glucose "uphill" against its gradient. If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. Can you find a safe way to heat or cool the food coloring before adding it to the water? Na+ For each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. Diffusion is the mixing of substances due to the movement of their particles. Diffusion Definition & Meaning - Merriam-Webster Diffusion will continue until the concentration gradient has been eliminated. The gradient is steep enough that potassium ions will move out of the cell (via channels), despite a growing negative charge on the interior. This voltage will be maintained as long as K, For more explanation of how the voltage across the membrane is established, take a look at the. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. The material that diffuses could be a solid, liquid or gas. However, the same phenomenon is not seen when immiscible liquids like petrol and water are mixed together. Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. Solution A contains 1% glucose, solution B contains 5% glucose. Which of the following is most likely to move through the cell membrane by facilitated diffusion? Which of the following best describes the survey system used in both locations shown? The inside of all cells also contain a jelly-like substance called cytosol. Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? Diffusion can either be simple diffusion and be facilitated by another molecule. Primary active transport, secondary active transport, exocytosis, and endocytosis are all what type of process? Do not mix or stir. Can you predict, based on the first way of doing the experiment, what might change, if anything? This can even be observed visually by the addition of different colored dyes to each of the liquids. The two images represent two different methods of raising livestock in the United States. When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again. Water moves into and out of cells by osmosis. 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. Otherwise, tap the red Don't know box. This increases the rate at which solute and solvent molecules move, and increases collisions. Which of the following best explains how a wheat farmer in the Northern Plains region of the United States is able to maximize profits? What is required for filtration to occur? C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. if there are more Potassium ions in a cell, how is the cell negatively charged? Which of the following explains the prevalence of banana plantations in Central America? 2.1: Osmosis - Biology LibreTexts Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. Banana plants were brought to Central America from Southeast Asia to be grown closer to markets in the United States and Canada. Simple diffusion is relevant in chemical reactions, in many physical phenomena, and can even influence global weather patterns and geological events. this is in relation to the electrochemical gradient section. Eventually, the concentration of "stuff" on either side of them will even out. Na+. A&P HW 5 Flashcards | Quizlet In facilitated diffusion, molecules only move with the aid of a protein in the membrane. Direct link to auzennesylvester92's post Are these pumps negativel, Posted 5 years ago. Which of the following is least likely to increase the rate of diffusion? http://physrev.physiology.org/content/91/2/733, https://phys.org/news/2013-10-mechanism-sodium-potassium-revealed.html. Although one of these refers to chemical properties and the latter social interaction, both are examples or diffusion. Diffusion is affected by temperature, area of interaction, steepness of the concentration gradient and particle size. The plasma membrane (see figure below) is made of a double layer of special lipids, known as phospholipids. When they move in the same direction, the protein that transports them is called a. Some molecules can go through the cell membrane to enter and leave the cell, but some cannot. 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. 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. An open door is completely permeable to anything that wants to enter or exit through the door. This statement describes _____. Which of the following compares this geographic relationship between these revolutions? Facilitated diffusion is powered entirely by GTP hydrolysis B. 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 Passive transport and active transport across a cell membrane article Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. Which of the following explains an impact of globalized agricultural commodity chains on consumers as compared to producers? Mastering A&P Chapters 1-3 Flashcards | Quizlet Which of the following correctly explains the relationship between wheat and its early hearth of domestication? solute: a substance dissolved in another to form a solution. You now add the two solutions to a beaker that has been divided by a semipermeable membrane, with pores that are too small for the sugar molecules to pass through, but are big enough for the water molecules to pass through. (1967). Watch what happens to the food coloring. Diffusion is the movement when molecules move from higher concentrated area to lower concentrated area. This electricity can do work. Which of the following scenarios best explains the Columbian Exchange? The first sugar solution is hypotonic to the second solution. The river in the long lot survey system provided better access to waterways to transport goods to market.