which of the following best explains diffusion?

The cotransporter accomplishes this by physically coupling the transport of glucose to the movement of sodium ions down their concentration gradient. C. peroxisome 1. Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . The SER detoxifies drugs and harmful substances ingested by and produced in the body. Epinephrine binds to a cell-surface receptor; the activated receptor catalyzes the conversion of glycogen to glucose. Which of the following is not required for osmosis to occur? The images show examples of agricultural technology developed during different time periods. Diffusion - Definition, Examples and Types | Biology Dictionary Imagine you have a cup that has \(100 \: \text{mL}\) water, and you add \(15 \: \text{g}\) of table sugar to the water. Which of the following best explains why tea plantations are common in Sri Lanka and tea exports are important to the country's economy? Which of the following best explains why farmers would plant both strawberries and watermelons in the same field? The reaction proceeds as the two reactants diffuse towards each other and undergo a chemical reaction to form esters. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } These molecules diffuse freely in and out of the cell, along their concentration gradient. Both systems require geometric calculations to survey property lines. Which of the following is most likely to move through the cell membrane by facilitated diffusion? The cell membrane allows the cell to stay structurally intact in its water-based environment. Do not mix or stir. The hypertonic solution has a lower water concentration than the hypotonic solution, so a concentration gradient of water now exists across the membrane. Which of the following substances must travel across a membrane via facilitated diffusion? Solutions of equal solute concentration are isotonic. 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. At this balance point, the inside of the membrane is negative relative to the outside. At equilibrium, movement of molecules does not stop. What type of cellular extension have you observed? 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. Based on the map above, explain the degree to which lettuce production takes place in the United States. Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. Direct link to Ivana - Science trainee's post Because it is faster to u, Posted 7 years ago. C. detoxify certain chemicals D. through oxidation reactions Osmosis | Biology Quiz - Quizizz Everything in the cell sits in the cytosol, like fruit in a Jell-o mold. The long-lot system results in population clustered along a waterway, whereas the metes-and-bounds system results in a random, dispersed population pattern. This statement describes _____. However, the township-and-range system uses simplified calculation to create a more ordered landscape. Put the food coloring back where you found it. Passive Transport | Biology I - Lumen Learning What would happen if a cell dissolved in water, like sugar does? Which of the following best explains diffusion? Which of the following best explains the diffusion of plants and animals from their hearths of domestication? 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 Which of the following best describes advances in the production of textiles during the Second Agricultural Revolution and the Industrial Revolution? 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. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. Which of the following statements most accurately compares these two agricultural practices? Watch what happens to the food coloring. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. 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. When they move in the same direction, the protein that transports them is called a. Because diffusion happens from high concentration to low concentration, the more molecules are moving, the more opportunities they have to mix together. 1) The "sodium/glucose symporter", known as SGLT (sodium glucose linked transporter), receives the energy needed to perform its transport from the electrochemical gradient established by the sodium/potassium pump. In secondary active transport, the two molecules being transported may move either in the same direction (i.e., both into the cell), or in opposite directions (i.e., one into and one out of the cell). Which of the following is not a passive process? 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. 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)? This process continues until the voltage across the membrane is large enough to counterbalance potassiums concentration gradient. For instance, most of a red blood cells energy is used to maintain internal sodium and potassium levels that differ from those of the surrounding environment. His feet and legs were swollen with fluid. 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? A. For instance, when water is mixed with glycerol, over time the two liquids diffuse radially into each other. B. 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 latter may be 0.5 um while the former may be 100 um (which is more than 10X in comparative size). 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 fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. B. ribosome A primary active transport process is one in which __________. The first sugar solution is hypotonic to the second solution. sideropenia _____________________________________________________. The Diffusion of Oxygen, Carbon Dioxide, and Inert Gas in Flowing Blood. 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. 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. The images shown illustrate the differences in scale of production for two methods of producing thread. Simple diffusion and passive transport (article) | Khan Academy Diffusion - BBC Bitesize A. synthesize proteins 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. Direct link to Zaeen Iqbal's post i dont quite understand t, Posted 7 years ago. At this point, equilibrium is reached. What process does water use to move across the plasma membrane? Divide the following terms into component parts and give the meanings of the complete terms. While they are confined to the smaller surface area within the crucible, the rate of diffusion remains low. Facilitated diffusion is powered entirely by GTP hydrolysis B. 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. start superscript, 2, comma, 3, end superscript, start superscript, 4, comma, 5, end superscript. This statement describes _____. Your cells have a plasma membrane that helps to guard your cells from unwanted intruders. Philibert, J. 266X15aX+baY+32b. The first image shows a long-lot survey method with a linear settlement pattern, and the second image shows a metes-and- bounds survey method with a dispersed settlement pattern. Cells may lyse when placed into a hypertonic environment. Distinguish among hypotonic, hypertonic, and isotonic solutions. A cell is placed into a 3% dextrose solution. tonicity: the amount of solute in a solution. The gradient is steep enough that potassium ions will move out of the cell (via channels), despite a growing negative charge on the interior. & y_1^{\prime}=3 y_2 \\ Heroes and Highlights in the History of Diffusion. Domesticated animals such as cattle, horses, pigs, and chickens were introduced to the Americas by European colonizers. Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. Solved Which of the following best explains the effect of - Chegg 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%. Which of the following best explains the diffusion of plants and 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. B. smooth endoplasmic reticulum Phosphorylation makes the pump change shape, re-orienting itself so it opens towards the extracellular space. Here, the cell can't import glucose for free using diffusion, because the natural tendency of the glucose will be to diffuse out rather than flowing in.Instead, the cell must bring in more glucose molecules via active transport.In active transport, unlike passive transport, the cell expends energy (for example, in the form of ATP) to move a substance against its concentration gradient. A. So something must protect the cell and allow it to survive in its water-based environment. The mechanization of farm work allowed many young people to migrate and join a growing urban industrial workforce. 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. Which of the following concepts best explains the driving forces of ; Diffusion occurs in liquids and gases when their particles collide randomly and . Direct link to liweiong272's post Main difference: In facil, Posted 6 years ago. Direct link to tyersome's post Great question since pr, Posted 7 years ago. Do you think the temperature of the food coloring might have an effect on how it diffuses? The plasma membrane is semipermeable, meaning that some things can enter the cell, and some things cannot. Which of the following best describes the differences in the agricultural practices and land use for these products? 0 To produce a mRNA molecule to deliver the genetic instructions outside the nucleus. 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. The river in the long lot survey system provided better access to waterways to transport goods to market. 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. As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . What is transported across a membrane during osmosis? All cells have a barrier around them that separates them from the environment and from other cells. Background. 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. If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. (2017, April 27). This electricity can do work. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. Solution A contains 1% glucose, solution B contains 5% glucose. does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? Secondary active transport involves the movement of water by osmosis into a cell. Wheat was first domesticated in Mesopotamia because of a favorable climate and a great diversity of wild grains that led to crossbreeding of seeds. Use these flashcards to help memorize information. 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. For cell transport, diffusion is the movement of small molecules across the cell membrane. What process permits absorption of glucose into cells? Conversely, in active transport, the solute moves against the concentration gradient, from regions of lower to higher concentration. Are these pumps negatively charge since they have a high affinity for the positive ions? The liver is an organ that can synthesize lipids, such as cholesterol, and detoxify poisons, such as alcohol. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Diffusion and Osmosis - Difference and Comparison | Diffen When placed in a hypertonic solution, a red blood cell will lose water and undergo crenation (shrivel). Which of the following best explains the potential impact of rising global temperatures on agricultural regions? Which of the following is least likely to increase the rate of diffusion? Which of the following is least likely to increase the rate of diffusion? Question 56. A. The three main kinds of passive transport are diffusion (or simple diffusion), osmosis, and facilitated diffusion. In simple diffusion, this process proceeds without the aid of a transport protein. answer choices Through the process of ethnocentrism, American culture has spread throughout the world. 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 is used to export large molecules from the cell? The use of improved plant hybrids and agricultural chemicals. A. Typically, diffusion refers to the movement of molecules from high concentrations to lower concentrations. Which of the following best explains a negative economic consequence of the Green Revolution in less developed countries as compared to more developed countries? This results in crenation (shriveling) of the blood cell. The images shown illustrate a change that took place as the Second Agricultural Revolution coincided with the Industrial Revolution. Because it is faster to utilize already available ATP through the electrochemical gradient. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). As a result of the EUs General Data Protection Regulation (GDPR). Most lettuce is produced, processed, and packaged for sale in supermarkets that are a significant distance from where the product was grown. C. The IV fluid should be hypertonic to the patient's blood. 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. Direct link to Dovid Shaw's post how does the antiporter p, Posted 7 years ago. Does it move differently in the hot water than the cold water? The cell is therefore not completely permeable. When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again. 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. Simple diffusion and osmosis do not involve transport proteins. 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. AP Bio Final 2019 | Biology Quiz - Quizizz D. The IV fluid should be hypotonic to the patient's blood. For best results enter two or more search terms. One of the main characteristics of diffusion is the movement of molecules along the concentration gradient. The two images represent two different methods of raising livestock in the United States. In this experiment, you will experience how temperature affects the mixing of food coloring drops with water. Which of the following best explains the importance of climate to agricultural practices? In less developed countries, pesticides are typically applied by hand, whereas pesticides are typically applied by tractors or aircraft in more developed countries. Direct link to Yago's post Why can't the Sodium move, Posted 4 years ago. Which of the following best explains the economic advantage of the type of farm-produced goods shown in the images? If you forget it there is no way for StudyStack They have the same charge, so it probably won't have something to do with that and Sodium is smaller than Potassium, so it seems like it should be easier!? Agricultural technology has increased the economy of scale and the carrying capacity of feedlots, increasing profits for the farmer. Predict what will happen to a patient's red blood cells if you give the patient an IV of pure water. 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. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells. Water moves into and out of cells by osmosis. Option C is the correct answer because Cultural divergence (CD) happens when two cultures separate, therefore CD explains the best concept of driving forces of contemporary cultural diffusion. This property can be observed even better if the gas has an odor or color. Diagram of a sodium-glucose cotransporter, which uses the energy stored in a sodium ion gradient to transport glucose "uphill" against its gradient. This type of transport is known as _____. Describe flow of solvent molecules across a membrane. The brands listed above are trademarks of 3M. Retrieved from https://biologydictionary.net/diffusion/. Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid seeds and the chemical inputs to grow them, leaving large gaps in the success of the Green Revolution outside of urban cores. What separates the intracellular fluid from the extracellular fluid? 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. Passive transport and active transport across a cell membrane article Which of the following is the main component of the cell membrane? Learn more about how this experiment is based in NGSS Disciplinary Core Ideas. 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. Which of these components add specialized functions to the plasma membrane? Direct link to auzennesylvester92's post Are these pumps negativel, Posted 5 years ago. Which of the following statements is best supported by the images? Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. For example, how might this play into why coffee and tea always start with hot water? Diffusion is the process of movement of molecules under a concentration gradient. The image shows the movement of an insoluble molecule from the extracellular space towards the cytoplasm. A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. Similarly, two miscible liquids will also diffuse into each other to form a uniform solution. At equilibrium, there is equal movement of materials in both directions. This makes it easier for the dye to get mixed throughout the hot water. Which one of the following processes can explain this? Which of the following processes require the use of protein carrier molecules? Examples of molecules that can easily diffuse across the plasma membrane include carbon dioxide and oxygen gas. For instance, when iodine is sublimated over a hot stove, purple fumes begin to appear and mix with air. The kinetic energy of the molecules results in random motion, causing diffusion. Direct link to l's post Questions: The food coloring mixes through the hot water faster than it mixes with the cold water. 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. "Permeable" means that anything can cross a barrier. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? LEFT ARROW - move card to the Don't know pile. Fish cells, like all cells, have semipermeable membranes. Cytosol is composed of water and other molecules, including enzymes, which are proteins that speed up the cell's chemical reactions. Also, it is spatially more available than in the case of ATP. 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? 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? What conditions affect the diffusion of a substance in water? At any given temperature, the diffusion of a smaller particle will be more rapid than that of a larger-sized molecule. Diffusion will continue until the concentration gradient has been eliminated. 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. Question 1 Which of the following can best explain why eukaryotic cells 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. Some transport processes use transport proteins in the plasma membrane, but do not require ATP. 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). The same gas would diffuse slightly more slowly in a liquid such as water and slowest in a solid. D. The SER stores calcium ions. The image is a simple representation of the diffusion of one particle in another medium. Cells placed in a hypotonic solution will take in water across their membranes until both the external solution and the cytosol are isotonic. Which of the following best explains diffusion?Which of the following A cell is isotonic to the surrounding 4% dextrose solution. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. Which of the following best describes the impacts of the Second Agricultural Revolution? Look at the large card and try to recall what is on the other side. In class, do you typically sit evenly spaced or all scrunched together? Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. Also, think about where you see this happen in other places. 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). Which of the following is most likely to move through the cell membrane by facilitated diffusion? Process of Osmosis vs. Diffusion . What Is Diffusion? - Definition, Types & Examples Of Diffusion - BYJUS In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. Which of the following best explains the farming practice related to plantation agriculture? Diffusion is an important part of many biological and chemical processes. Feedlots can minimize costs associated with livestock production because feedlots do not use as much space as cattle ranching. fats and proteins yield too much energy for the cells to process. yes, dimensions also play a role in the case of transport. These farmers and traders exchanged the domesticated plants between themselves. It is an important process occurring in all living beings. Which of the following best describes the survey methods used to delineate agricultural land and the associated settlement patterns shown in the tw.

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