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

A. Do not mix or stir. 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. In less developed countries, pesticides are typically applied by hand, whereas pesticides are typically applied by tractors or aircraft in more developed countries. Biologydictionary.net, April 27, 2017. https://biologydictionary.net/diffusion/. Which of the following is least likely to increase the rate of diffusion? The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. This can even be observed visually by the addition of different colored dyes to each of the liquids. Direct link to Stocke's post Why does the diffusion of, Posted 7 years ago. The liver is an organ that can synthesize lipids, such as cholesterol, and detoxify poisons, such as alcohol. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. C. movement of molecules from an area of high concentration to an area of low concentration. \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{W}_{\text {cycle }}=250 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=200 \mathrm{kW}} \\ {\text { c. } \dot{W}_{\text {cycle }}=350 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=150 \mathrm{kW}} \\ {\text { d. } \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=200 \mathrm{kW}}\end{array} This statement describes _____. The phospholipid tails are ________, which make the plasma membrane impermeable to water. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. Main difference: In facilitated diffusion, the solute moves down the concentration gradient, from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. 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. Through a process of passive diffusion, without the active involvement of any other molecule oxygen passes through the capillary membrane and enters cells. For cell transport, diffusion is the movement of small molecules across the cell membrane. Which of the following is not a passive process? Na+. Identify the polar and nonpolar regions of a cell membrane. Osmosis | Biology Quiz - Quizizz 1. The site owner may have set restrictions that prevent you from accessing the site. Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. 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. Adult should review each experiment and determine what the appropriate age is for the students participation in each activity before conducting any experiment. What will happen to a freshwater fish in the ocean? Heroes and Highlights in the History of Diffusion. At 3M, we discover and innovate in nearly every industry to help solve problems around the world. Question 12 30 seconds Q. Why does the diffusion of the solute down its concentration gradient release energy? B. digest and recycle damaged organelles Human Anatomy & Physiology- MyLab & Mastering AandP- Ch 03 HW This type of transport is known as _____. Overall, there are more positive charges on the outside of the membrane than on the inside. 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? The cytoplasm does not include the nucleus. Direct link to l's post Questions: In fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. Which Of The Following Best Explains Diffusion Quizlet? Microtubules are composed of protein subunits known as: Through the microscope, you see cells swimming. 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? 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. Fish cells, like all cells, have semipermeable membranes. Which of the following best explains a negative economic consequence of the Green Revolution in less developed countries as compared to more developed countries? Direct link to Srichchha Pradhan's post There are certainly more , Posted 6 years ago. In the South Asian country of Sri Lanka, tea is farmed as a monoculture. molecules move through transport proteins that have been activated by ATP. Molecules that cannot easily pass through the bilayer include ions and small hydrophilic molecules, such as glucose, and macromolecules, including proteins and RNA. 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. Mastering A&P Chapters 1-3 Flashcards | Quizlet The rate of this movement depends on the energy of the molecules. Township and range: unit-block field patterns with dispersed farmsteads and occasional villages. Direct link to long pham's post if there are more Potassi, Posted 6 years ago. Sucrose cannot pass through a red blood cell's plasma membrane, but water and urea can. A not very well-studied A&P student heard about a phenomenon called water intoxication and thought it sounded fun so she decided to try it. 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. \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=100 \mathrm{kW}} \\ {\text { b. } The cell is therefore not completely permeable. Spontaneous activity releases energy, non-spontaneous activity (like moving something against its concentration gradient) requires energy. If you've accidentally put the card in the wrong box, just tap on the card to take it out of the box. C. detoxify certain chemicals D. through oxidation reactions D. mitochondria, Which of the following is a function of lysosomes? Solutions of equal solute concentration are isotonic. What Is Diffusion? - Definition, Types & Examples Of Diffusion - BYJUS For instance, when iodine is sublimated over a hot stove, purple fumes begin to appear and mix with air. The mixture of a solute in a solvent is called a solution. Which of the following best explains diffusion? Can you find a safe way to heat or cool the food coloring before adding it to the water? Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. The IV fluid should be isotonic to the patient's blood. This is because in hot water, the water molecules have more energy and are moving faster than the molecules of cold water. to send you a reset link. The molecules move from a region of higher concentration to a region of lower concentration until the concentration becomes equal . Determine the type of membrane transport used to transport these sodium ions. Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. Diffusion helps in the movement of substances in and out of the cells. Direct link to Yago's post Why can't the Sodium move, Posted 4 years ago. Background. 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. Privacy Policy and Because it is faster to utilize already available ATP through the electrochemical gradient. Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. 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. This creates a concentration gradient, with concentration of carbon dioxide gradually decreasing with distance from the lump of dry ice. A&P lecture 1 chp 3 Flashcards | Chegg.com Allison Soult, Ph.D. (Department of Chemistry, University of Kentucky). Animal Gas Exchange and Transport | Organismal Biology - gatech.edu The membrane connections that prevent the leaking of fluid between cells are called ________. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. 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). Solved QUESTION 28 Which of the following best explains the - Chegg passive transport: a method of transporting material that does not require energy. tonicity: the amount of solute in a solution. The rate of this movement depends on the energy of the . A. synthesize proteins Direct link to auzennesylvester92's post Are these pumps negativel, Posted 5 years ago. 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. Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. At the exact same time, add 2-3 drops off food coloring into each glass. 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 explains an impact of globalized agricultural commodity chains on consumers as compared to producers? Actually, Sodium does go down its gradient but through specialized Sodium channels. Mehrer, H. and Stolwijk, N. A. 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. The rate of diffusion depends on the nature of interaction between the medium and material. C. The IV fluid should be hypertonic to the patient's blood. The two images represent different agricultural land survey patterns. Which of these statements about diffusion of molecules is true? Since diffusion is powered primarily by the probability of molecules moving away from a region of higher saturation, it immediately follows that when the medium (or solvent) has a very low concentration of the solute, the probability of a molecule diffusing away from the central area is higher. 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? In each cycle, three sodium ions exit the cell, while two potassium ions enter. The best explanation for the diffusion of plants and animals from their hearths of domestication is option C. Contagious diffusion in the early years was a way of spreading from one person to the other. (2009). What conditions affect the diffusion of a substance in water? She consumed a large amount of water in a short time (Don't try thiswater intoxication is often fatal.). This results in swelling of the cell and potential hemolysis (bursting) of the cell. This is usually not directed in any particular manner, and can appear random. One phosphate group from ATP is attached to the pump, which is then said to be phosphorylated. In its inward-facing shape, the pump loses its interest in (has a low affinity for) potassium ions, so the two potassium ions will be released into the cytoplasm. The first sugar solution is hypotonic to the second 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. He should be given a hypotonic drip to draw fluid out of his cells. Which of the following is NOT one of the functions of the cytoskeleton? 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. This results in crenation (shriveling) of the blood cell. 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. Farmers' health is at risk in less developed countries, whereas environmental pollution is a risk in more developed countries. You would need to create a new account. Compared to plain milk or fresh fruit, these value-added agricultural goods significantly increase the price of the farm products sold and increase earnings for farmers. A. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? Which of the following best explains how a wheat farmer in the Northern Plains region of the United States is able to maximize profits? Epinephrine binds to a cell-surface receptor; the activated receptor catalyzes the conversion of glycogen to glucose. Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? Question 56. 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. i dont quite understand the secondary active transport. Predict what will happen to a patient's red blood cells if you give the patient an IV of pure water. What part of a cell membrane is usually in contact with the interstitial fluid? What type of membrane junction allows ions to pass directly from the cytoplasm of one cell to the cytoplasm of the adjacent cell? 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. This statement describes _____. Passive Transport | Biology I - Lumen Learning Be sure to clean up when you are done. 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. If you find an example of where hot or cold water is used for something that might involve diffusion, see if you can try it with the opposite and observe any differences in the results. This may seem like a complicated cycle, but it just involves the protein going back and forth between two forms: an inward-facing form with high affinity for sodium (and low affinity for potassium) and an outward-facing form with high affinity for potassium (and low affinity for sodium). Which of the following best explains the spatial patterns illustrated in von Thnens model? Incorrect options: Option A is incorrect because space-time compression is the shortened time or communication between two places. Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. 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. The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. Put the food coloring back where you found it. 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. 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. Nuclear pores connect the cytoplasm with the nucleoplasm and allow substances to move between the two areas. The use of improved plant hybrids and agricultural chemicals. Distinguish among hypotonic, hypertonic, and isotonic solutions. Water leaves the cells and the cells shrink. Tea plantations were established in Sri Lanka by a former European colonial power. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. Also, it is spatially more available than in the case of ATP. The greater the surface area, the faster the rate of diffusion. Increase C. Decrease D. It would depend on the nature and temperature of the coolant, 3. Solution A contains 1% glucose, solution B contains 5% glucose. 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. The kinetic energy of the molecules results in random motion, causing diffusion. 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!? Passive processes that move substances across membranes ________. Diffusion through a membrane | Cell Structure Quiz - Quizizz (2017, April 27). Direct link to zykeriaprice2's post what is the main differen, Posted 7 years ago. The plasma membrane (see figure below) is made of a double layer of special lipids, known as phospholipids. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. O To edit the mRNA strand and make it ready to leave the nucleus. For instance, a gas diffuses very quickly in another gas. Water moves into and out of cells by osmosis. 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? Biologydictionary.net Editors. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } A heavier molecule with a larger surface area will diffuse slowly, while smaller, lighter particles will diffuse more quickly. 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. Both domesticated plants and animals spread across the globe through contagious diffusion in early years by farmers and traders, and later by relocation diffusion through European exploration and colonialism. Active transport works by using a phosphate group from ATP to change the shape of the protein and thus do work. Each of these factors, independently and collectively can alter the rate and extent of diffusion. 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. Which of the following best explains diffusion? Glucose is the most commonly used energy source by human cells because (Points: 1) this is the most abundant macromolecule available for cellular respiration. How, exactly, does the sodium-potassium pump establish a voltage across the membrane? So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. At this balance point, the inside of the membrane is negative relative to the outside. Adults should handle or assist with potentially harmful materials or sharp objects. If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. At that concentration, the solution is isotonic to the cell. For each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. This barrier is called the plasma membrane, or cell membrane. If you say something, I ll ask someone at what age erectile dysfunction starts to clean it up. 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. Watch what happens to the food coloring. Banana plants were brought to Central America from Southeast Asia to be grown closer to markets in the United States and Canada. Question 16 30 seconds Q. LEFT ARROW - move card to the Don't know pile. 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. In any system, molecules are moving with a certain amount of kinetic energy. What is required for filtration to occur? selectively permeable: the characteristic of a membrane that allows some substances through but not others. 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 both solutions are isotonic. Similarly, if a canister of liquid nitrogen leaks a little, nitrogen gas that escapes would quickly diffuse into the atmosphere. Because diffusion happens from high concentration to low concentration, the more molecules are moving, the more opportunities they have to mix together. An electrical potential difference exists whenever there is a net separation of charges in space. Which of the following best describes advances in the production of textiles during the Second Agricultural Revolution and the Industrial Revolution? This property can be observed even better if the gas has an odor or color. Biology Dictionary. The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. why wouldnt cells use atp for primary active transport of glucose directly, why go through a second step? 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). Comparing the two images, which survey system was more efficient in terms of trade? But now you have two mixtures of different solute concentrations. Phosphorylation makes the pump change shape, re-orienting itself so it opens towards the extracellular space. What assists the movement of substances by facilitated diffusion? The images shown illustrate the differences in scale of production for two methods of producing thread. 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. Have you ever colored a picture with marker and noticed that two touching colors begin to bleed together? If you knew the answer, tap the green Know box. Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . All the ways scientists do investigations. C. rough endoplasmic reticulum The image is a simple representation of the diffusion of one particle in another medium. The English language became a widely spoken language in North America in the twentieth century. C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! 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. Water is attracted to the compartment with a lower osmotic pressure. 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. The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out. The reaction proceeds towards completion at a faster rate. D. The IV fluid should be hypotonic to the patient's blood. The three main kinds of passive transport are diffusion (or simple diffusion), osmosis, and facilitated diffusion. Which of the following substances must travel across a membrane via facilitated diffusion? No tracking or performance measurement cookies were served with this page. Which one of the following processes can explain this? Although one of these refers to chemical properties and the latter social interaction, both are examples or diffusion. Diffusion is the process of movement of molecules under a concentration gradient. Retrieved from https://biologydictionary.net/diffusion/. & y_2^{\prime}=12 y_1 \\ Which of the following best explains the risks associated with pesticide applications? If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. What process permits absorption of glucose into cells? Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. Diffusion happens slowly and only across the small surface of interaction between the two fluids. Are these pumps negatively charge since they have a high affinity for the positive ions? Wheat was first domesticated in Mesopotamia because of a favorable climate and a great diversity of wild grains that led to crossbreeding of seeds. Which of these components add specialized functions to the plasma membrane? One of the main characteristics of . What separates the intracellular fluid from the extracellular fluid? Several large cities on the East Coast provide a growing market and shorter distances for transporting market gardening products. Both systems require geometric calculations to survey property lines. Divide the following terms into component parts and give the meanings of the complete terms. In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. QUESTION 28 Which of the following best explains the role of transcription in a cell? Diffusion Definition & Meaning - Merriam-Webster A substance moves by facilitated diffusion into a cell.