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

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). A fish that lives in salt water will have somewhat salty water inside itself. Diffusion is the mixing of substances due to the movement of their particles. 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. Diffusion is the process of movement of molecules under a concentration gradient. 2.1: Osmosis - Biology LibreTexts For example, while oxygen gas will diffuse slightly more quickly than carbon dioxide, both of them will move more quickly than iodine gas. Diffusion is affected by temperature, area of interaction, steepness of the concentration gradient and particle size. The two images show different agricultural methods. Diffusion Explained with Food Coloring | 3M Science at Home Make sure to remember your password. The hypertonic solution is one one side of the membrane and the hypotonic solution on the other. Minerals For Erectile Dysfunction - Camping Estanyet Legal. 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. For example, oxygen is at a higher concentration inside arteries and arterioles, when compared with the oxygen levels in actively respiring cells. Channels Channel proteins span the membrane and make hydrophilic tunnels across it, allowing their target molecules to pass through by diffusion. Image 2 shows an innovation that occurred in the Second Agricultural Revolution, reducing the amount of labor needed and increasing crop yields. Which of the following solutions will cause a red blood cell to shrink? These farmers and traders exchanged the domesticated plants between themselves. Some molecules can go through the cell membrane to enter and leave the cell, but some cannot. That is because the molecules from the food odor havent diffused into that space yet. 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. Which of the following is the main component of the cell membrane? Diffusion through a membrane | Cell Structure Quiz - Quizizz In this experiment, you will experience how temperature affects the mixing of food coloring drops with water. yes, dimensions also play a role in the case of transport. start superscript, 2, comma, 3, end superscript, start superscript, 4, comma, 5, end superscript. In its outward-facing form, the pump switches allegiances and now really likes to bind to (has a high affinity for) potassium ions. As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . The reaction proceeds as the two reactants diffuse towards each other and undergo a chemical reaction to form esters. Obviously, the cell could not survive in such an environment. This property can be observed even better if the gas has an odor or color. Diffusion Definition & Meaning - Merriam-Webster Adults should handle or assist with potentially harmful materials or sharp objects. Lipids do not mix with water (recall that oil is a lipid), so the phospholipid bilayer of the cell membrane acts as a barrier, keeping water out of the cell, and keeping the cytoplasm inside the cell. Which of the following best describes the settlement patterns shown in the images? movement of molecules from an area of high concentration to an area of low concentration. This statement describes _____. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. His feet and legs were swollen with fluid. When these molecules collide with one another, there is a change in the direction of movement as well as changes to momentum and velocity. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? AP human test | Geography Quiz - Quizizz Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. Through the process of uniculturalism, multiple types of foods are blended together into one cuisine. Direct link to l's post Questions: 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? The liver is an organ that can synthesize lipids, such as cholesterol, and detoxify poisons, such as alcohol. Diffusion and Osmosis - Difference and Comparison | Diffen Philibert, J. this monosaccharide yields the most energy of all macromolecules. For example, if a block of dry ice (carbon dioxide in solid form) is placed inside a box, carbon dioxide molecules in the center of the block mostly collide with each other and get retained within the solid mass. Direct link to Stocke's post Why does the diffusion of, Posted 7 years ago. Which of the following best explains why tea plantations are common in Sri Lanka and tea exports are important to the country's economy? Everything in the cell sits in the cytosol, like fruit in a Jell-o mold. What values of a and b would complete each of the following (X and Y are not meant to be any particular elements): 266X+baY15aX+32b\begin{aligned} 266 \mathrm{X} & \rightarrow \alpha+\mathrm{b}^{\mathrm{a}} \mathrm{Y} \\ Direct link to zykeriaprice2's post what is the main differen, Posted 7 years ago. Adult should review each experiment and determine what the appropriate age is for the students participation in each activity before conducting any experiment. The food coloring mixes through the hot water faster than it mixes with the cold water. Allison Soult, Ph.D. (Department of Chemistry, University of Kentucky). This can occur with all sorts of matter, but is most commonly observed in liquids and gases. This is related to both the mass of the molecule and its surface area. Limited farmland encourages intensive farming with intercropping to produce high yields. Also, it is spatially more available than in the case of ATP. B. smooth endoplasmic reticulum why wouldnt cells use atp for primary active transport of glucose directly, why go through a second step? The reaction proceeds towards completion at a faster rate. Which of the following spatial patterns is best explained by bid-rent theory? Which of the following is a characteristic of the cell membrane? C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! Question 12 30 seconds Q. Question 16 30 seconds Q. Facilitated diffusion is powered entirely by GTP hydrolysis B. Banana plants were brought to Central America from Southeast Asia to be grown closer to markets in the United States and Canada. What type of cellular extension have you observed? B. A number of colonies were established and settled by people from Great Britain. 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 If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. Comparing the two images, which survey system was more efficient in terms of trade? B. digest and recycle damaged organelles This is also seen when two liquid reactants are mixed with one another. In an isotonic solution, the flow of water in and out of the cell is happening at the same rate. Several large cities on the East Coast provide a growing market and shorter distances for transporting market gardening products. 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. Facilitated diffusion is diffusion that is helped along (facilitated by) a membrane transport channel. Which of the following best explains diffusion? Which of the following solutions contains the most solute? Therefore, muscle cells have numerous: Which statement regarding the smooth endoplasmic reticulum (SER) is false? The plasma membrane is semipermeable, meaning that some things can enter the cell, and some things cannot. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. The image is a simple representation of the diffusion of one particle in another medium. 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. synthesize ATP, Which of the following organelles synthesizes proteins? Which of the following explains how global demand for palm oil has proved beneficial and detrimental f. Palm oil exports provided substantial corporate profits, but the growth in the industry resulted in heavy deforestation in both countries. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). Direct link to Eshita's post No, because the potassium, Posted 7 years ago. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } 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? Biologydictionary.net Editors. Figure showing the transport cycle of the sodium-potassium pump. 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. 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. The mechanization of farming in the Second Agricultural Revolution resulted in more reliable crop harvests and healthier populations in areas where the mechanization was adopted. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. The electrochemical gradients set up by primary active transport store energy, which can be released as the ions move back down their gradients. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. Sheep production is an example of extensive agriculture requiring large pastures, whereas poultry production is an example of intensive agriculture often practiced indoors. A red blood cell will swell and undergo hemolysis (burst) when placed in a hypotonic solution. Which of the following best describes the impacts of the Second Agricultural Revolution? (a) Osmosis UEE Main-2020 (Septeimbern) (c) Diffusion (b) Reverse osmosis (d) Dialysis 26. The concentration of sodium ions is lower inside the cell than in the extracellular fluid, while the reverse is true for potassium ions. 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. \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=100 \mathrm{kW}} \\ {\text { b. } 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. Which of the following best compares a technological consequence of the Green Revolution in more developed and less developed countries? C. The IV fluid should be hypertonic to the patient's blood. Large polar molecules cannot diffuse across a biological membrane B. When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again. A. smooth endoplasmic reticulum Which of the following best describes the survey system used in both locations shown? We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 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. Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. Otherwise, tap the red Don't know box. Which of the following explains an impact of globalized agricultural commodity chains on consumers as compared to producers? This allows red blood cells to carry oxygen all over your body. Which statement displays the address of the variable num1? 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. Fish cells, like all cells, have semipermeable membranes. 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. Which of the following concepts best explains the driving forces of You would need to create a new account. All cells have a barrier around them that separates them from the environment and from other cells. This creates a concentration gradient, with concentration of carbon dioxide gradually decreasing with distance from the lump of dry ice. 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? 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. A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. Which of the following explains the diffusion and successful cultivation of many plants and animals in new regions of the world through the Columbian Exchange? It can involve either the spreading of a material through a medium or the transport of a particle across a membrane. Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. Be sure to clean up when you are done. Direct link to Ivana - Science trainee's post Because it is faster to u, Posted 7 years ago. 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. The cell is therefore not completely permeable. Therefore, they are NOT able to __________. 60 seconds. 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 There are certainly more numbers of potassium ions in the cells, but remember that there are greater numbers of sodium ions outside the cell (since for every three sodium ions moved out of the cells, two potassium ions enter the cell), therefore, resulting in a net positive charge outside the cell and net negative charge inside the cell. If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. 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. Why can't the Sodium move down it's concentration gradient by using the same channel the Potassium uses? This process does not require energy. To see how well you know the information, try the Quiz or Test activity. In this conformation, the pump no longer likes to bind to sodium ions (has a low affinity for them), so the three sodium ions are released outside the cell. 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). What separates the intracellular fluid from the extracellular fluid? movement of molecules from an area of high concentration to an area of low concentration. If you're seeing this message, it means we're having trouble loading external resources on our website. 0 To produce a mRNA molecule to deliver the genetic instructions outside the nucleus. The mixture of a solute in a solvent is called a solution. The kinetic energy of the molecules results in random motion, causing diffusion. (1967). Which of the following best explains diffusion?Which of the following During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. 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. Actually, Sodium does go down its gradient but through specialized Sodium channels. During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. Pour all of the water down the sink, and wash out the glasses. Diagram of a sodium-glucose cotransporter, which uses the energy stored in a sodium ion gradient to transport glucose "uphill" against its gradient. A cell is placed into a 3% dextrose solution. So something must protect the cell and allow it to survive in its water-based environment. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. Which of the following best explains the farming practice related to plantation agriculture? how does the carrier protein "harness" energy from another molecules concentration gradient? In an antiporter it uses the energy of the ions flowing down their concentration gradient. If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. "Permeable" means that anything can cross a barrier. The phospholipid is a lipid molecule with a hydrophilic ("water-loving") head and two hydrophobic ("water-hating") tails. The latter may be 0.5 um while the former may be 100 um (which is more than 10X in comparative size). Which of the following best describes the differences in the agricultural practices and land use for these products? Which of the following is not a major function of proteins in the cell membrane? Which of the following is not a passive process? Dairy cows must be kept close to farmhouses, as they require daily milking, and milk must be produced close to consumers, as it is highly perishable. When placed in a hypertonic solution, a red blood cell will lose water and undergo crenation (shrivel). B. ribosome Diffusion is an important part of many biological and chemical processes. On the other hand, facilitated diffusion, as the term indicates, requires the presence of another molecule (the facilitator) in order for diffusion to occur. Have you ever colored a picture with marker and noticed that two touching colors begin to bleed together? (2009). The phospholipid tails are ________, which make the plasma membrane impermeable to water. 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. Na+. Some transport processes use transport proteins in the plasma membrane, but do not require ATP. Solution A contains 1% glucose, solution B contains 5% glucose. Remember that there is water outside the cell, and the cytoplasm inside the cell is mostly water as well. answer choices Through the process of ethnocentrism, American culture has spread throughout the world. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. The SER detoxifies drugs and harmful substances ingested by and produced in the body. The material that diffuses could be a solid, liquid or gas. At equilibrium, movement of molecules does not stop. Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. Passive transport and active transport across a cell membrane article Similarly, the medium in which diffusion occurs could also be in one of the three physical states. In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. One of the most important pumps in animal cells is the, Not only does the sodium-potassium pump maintain correct concentrations of Na. D. Golgi apparatus. 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. Instead of feeling drunk, she felt nauseated, developed a severe headache, began to get confused, and then became unconscious. C. rough endoplasmic reticulum In simple diffusion, this process proceeds without the aid of a transport protein. 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. Can you find a safe way to heat or cool the food coloring before adding it to the water? 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. PS1.A: Structure and Properties of Matter, PS3.C: Relationship Between Energy and Forces. It s an accident, and I got a piece of land cheaply. While this charge ratio does make the cells interior slightly more negative, it actually accounts for only a, Instead, the sodium-potassium pump acts primarily by building up a high concentration of potassium ions inside the cell, which makes potassiums concentration gradient very steep. Drought and depletion of groundwater sources in developing countries cause a rise in global grain prices and associated higher costs for food. Solved 1. Which of the following best explains how water - Chegg Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . Spaeth, E. E., and Friedlander, S.K. Background. These molecules diffuse freely in and out of the cell, along their concentration gradient.
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