which of the following best explains diffusion?

Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. Sucrose cannot pass through a red blood cell's plasma membrane, but water and urea can. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. Diffusion is the process of movement of molecules under a concentration gradient. Which of the following is most likely to move through the cell membrane by facilitated diffusion? 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. Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. Not everything can make it into your cells. Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. 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. Diffusion can either be simple diffusion and be facilitated by another molecule. Here, the cell can't import glucose for free using diffusion, because the natural tendency of the glucose will be to diffuse. The SER synthesizes the majority of the lipid components of the plasma membrane. In chemical processes, diffusion is often the central principle driving many reactions. Are these pumps negatively charge since they have a high affinity for the positive ions? Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out. Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . B. Which Of The Following Best Explains Diffusion Quizlet? are in the same box the next time you log in. The sodium-potassium pump transports sodium out of and potassium into the cell in a repeating cycle of conformational (shape) changes. Which of the following best explains the spatial patterns illustrated in von Thnens model? D. The SER stores calcium ions. The SER detoxifies drugs and harmful substances ingested by and produced in the body. The images shown illustrate a change that took place as the Second Agricultural Revolution coincided with the Industrial Revolution. This increases the rate at which solute and solvent molecules move, and increases collisions. Why Do Giant Pandas Have Low Libido? At that concentration, the solution is isotonic to the cell. 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. However, for molecules in the periphery, rapidly moving molecules in the air also influence their movement, allowing them to diffuse into the air. If you say something, I ll ask someone at what age erectile dysfunction starts to clean it up. Most lettuce is produced, processed, and packaged for sale in supermarkets that are a significant distance from where the product was grown. Diffusion is the mixing of substances due to the movement of their particles. A cell is isotonic to the surrounding 4% dextrose solution. Which of these statements about diffusion of molecules is true? As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . Sheep production in New Zealand and poultry production in Arkansas produce food animals for human consumption. Which of the following is least likely to increase the rate of diffusion? Active transport: primary & secondary overview (article) | Khan Academy Describe flow of solvent molecules across a membrane. The site owner may have set restrictions that prevent you from accessing the site. At equilibrium, movement of molecules does not stop. Red blood cells behave the same way (see figure below). To log in and use all the features of Khan Academy, please enable JavaScript in your browser. A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. This electricity can do work. Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? Direct link to Eshita's post No, because the potassium, Posted 7 years ago. Image depicting the charge and ion distribution across the membrane of a typical cell. Sheep production is an example of extensive agriculture requiring large pastures, whereas poultry production is an example of intensive agriculture often practiced indoors. You would need to create a new account. Diffusion is affected by temperature, area of interaction, steepness of the concentration gradient and particle size. does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? Distinguish among hypotonic, hypertonic, and isotonic solutions. 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). Have you ever colored a picture with marker and noticed that two touching colors begin to bleed together? SDS, RDS, More Regulatory & Compliance Information, Lithium Battery UN 38.3 Test Summary Search, Transparency in Supply Chains and Modern Slavery Disclosures, Fill one glass half full of the coldest water you can get from the tap, Fill the other glass the same amount with the hottest water you can get from the tap. The function of the plasma membrane is to control what goes in and out of the cell. he Na+\mathrm{Na}^{+}Na+concentration of a solution was determined by measurement with a sodium ion-selective electrode. D. The IV fluid should be hypotonic to the patient's blood. 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. This is related to both the mass of the molecule and its surface area. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. C. The SER manufactures proteins for export from the cell. ; Diffusion occurs in liquids and gases when their particles collide randomly and . What is required for its transport? 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? Which of the following best explains the process illustrated by the image? This statement describes _____. A cell is placed into a 3% dextrose solution. Secondary active transport uses the energy stored in these gradients to move other substances against their own gradients. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? 2.1: Osmosis - Biology LibreTexts Would remain unchanged B. Remember that there is water outside the cell, and the cytoplasm inside the cell is mostly water as well. Cytosol is composed of water and other molecules, including enzymes, which are proteins that speed up the cell's chemical reactions. Which of the following is NOT one of the functions of the cytoskeleton? 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? For best results enter two or more search terms. Agricultural technology has increased the economy of scale and the carrying capacity of feedlots, increasing profits for the farmer. 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. In its outward-facing form, the pump switches allegiances and now really likes to bind to (has a high affinity for) potassium ions. answer choices The greater the difference in concentration, the quicker the rate of diffusion. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. yes, dimensions also play a role in the case of transport. AP Bio Final 2019 | Biology Quiz - Quizizz 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. This statement describes _____. Which of the following best explains the diffusion of plants and Which of the following is used to export large molecules from the cell? 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. Which of the following solutions will cause a red blood cell to shrink? C. rough endoplasmic reticulum Domestication of plants and animals evolved in each hearth independently of one another as societies in each area learned and applied the process to local plants and animals. Midlatitude climates tend to support similar agricultural crops and practices, such as wheat farming in the United States and China. Which of the following is the best situation for maintaining homeostasis? A. Direct link to William H's post If for example there are , Posted 5 years ago. 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 Wheat was first domesticated in Mesopotamia because of a favorable climate and a great diversity of wild grains that led to crossbreeding of seeds. These farmers and traders exchanged the domesticated plants between themselves. 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. How, exactly, does the sodium-potassium pump establish a voltage across the membrane? answer choices Through the process of ethnocentrism, American culture has spread throughout the world. 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. 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 process does water use to move across the plasma membrane? 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 is not required for osmosis to occur? Electrochemical gradients and the membrane potential. Which of the following explains one of the negative consequences of the Green Revolution that would be of greater c, Runoff of agricultural chemicals into the local groundwater that pollutes water resources. Can you find a safe way to heat or cool the food coloring before adding it to the water? A. Which of the following best explains why the New England region, located in the northeastern United States, would specialize in market gardening agriculture rather than other types of agriculture, such as grain farming? Put it in freshwater, and the freshwater will, through osmosis, enter the fish, causing its cells to swell, and the fish will die. 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. D. Golgi apparatus. Grocery stores sell oranges that are grown in locations with similar climates but different growing seasons. What is required for filtration to occur? A. 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