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

Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. Diffusion. Direct link to City Face's post Because a solute moving d, Posted 7 years ago. D. The SER stores calcium ions. It mainly occur in liquid and gaseous substance as their particle can easily move from one place to another. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? Facilitated diffusion is necessary for the biochemical processes of every cell since there is communication between various subcellular organelles. Which of the following best describes advances in the production of textiles during the Second Agricultural Revolution and the Industrial Revolution? Wheat was first domesticated in Mesopotamia because of a favorable climate and a great diversity of wild grains that led to crossbreeding of seeds. The SER synthesizes the majority of the lipid components of the plasma membrane. 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? Can you find a safe way to heat or cool the food coloring before adding it to the water? The concentration of sodium ions is lower inside the cell than in the extracellular fluid, while the reverse is true for potassium ions. For example, while oxygen gas will diffuse slightly more quickly than carbon dioxide, both of them will move more quickly than iodine gas. (2005). One of the main characteristics of diffusion is the movement of molecules along the concentration gradient. At any given temperature, the diffusion of a smaller particle will be more rapid than that of a larger-sized molecule. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Which of the following explains the prevalence of banana plantations in Central America? Tea plantations were established in Sri Lanka by a former European colonial power. 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. The electrochemical gradients set up by primary active transport store energy, which can be released as the ions move back down their gradients. molecules move through transport proteins that have been activated by ATP. A red blood cell will swell and undergo hemolysis (burst) when placed in a hypotonic solution. Unit 3 Culture Test | Geography Quiz - Quizizz The images shown illustrate a change that took place as the Second Agricultural Revolution coincided with the Industrial Revolution. If a cell is in a hypertonic solution, the solution has a . are in the same box the next time you log in. Actually, Sodium does go down its gradient but through specialized Sodium channels. 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. \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=100 \mathrm{kW}} \\ {\text { b. } Do not mix or stir. What transport process can create a concentration gradient for sodium across the plasma membrane? Mr. Weddington was admitted to the hospital with chronic heart failure. 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. 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. 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. Diffusion - Definition, Examples and Types | Biology Dictionary This example also shows that the diffusion of any one material is independent of the diffusion of any other substances. 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. D. The IV fluid should be hypotonic to the patient's blood. As a result of the EUs General Data Protection Regulation (GDPR). solute: a substance dissolved in another to form a solution. Simple diffusion and osmosis do not involve transport proteins. The gradient is steep enough that potassium ions will move out of the cell (via channels), despite a growing negative charge on the interior. Channels are very selective and will accept only one type of molecule (or a few closely related molecules) for transport. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? A solution that contains fewer solutes than the cell is ________ to the cell. Can't that serve the same role? 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? Nerve cells do not have centrioles. If you say something, I ll ask someone at what age erectile dysfunction starts to clean it up. Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration. 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). This type of transport is known as _____. Overall, there are more positive charges on the outside of the membrane than on the inside. D. Golgi apparatus. Which of the following compares this geographic relationship between these revolutions? Diffusion Explained with Food Coloring | 3M Science at Home ADP is released as a by-product. serve as the site for metabolic reactions such as protein synthesis. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. (2009). These channels are . This statement describes _____. If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. During the Green Revolution, agricultural practices from more developed countries diffused to less developed countries in Asia and Africa. Based on this information and your understanding of osmosis and tonicity, what type of IV fluid is the doctor likely administering to try to save the life of the student suffering from water intoxication? Secondary active transport involves the movement of a substance into a cell through a protein channel with its concentration gradient. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? In this form, the pump really likes to bind (has a high affinity for) sodium ions, and will take up three of them. 60 seconds. Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. Which cell junctions prevent substances from passing between adjacent cells? 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. Your email address is only used to allow you to reset your password. start superscript, 2, comma, 3, end superscript, start superscript, 4, comma, 5, end superscript. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient". C. movement of molecules from an area of high concentration to an area of low concentration. 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. The first sugar solution is hypotonic to the second solution. Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. Direct link to tyersome's post Great question since pr, Posted 7 years ago. Obviously, the cell could not survive in such an environment. The mixture of a solute in a solvent is called a solution. The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. 8.4: Osmosis and Diffusion - Chemistry LibreTexts At 3M, we discover and innovate in nearly every industry to help solve problems around the world. 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. Which of the following is the main component of the cell membrane? Which of the following best explains how a wheat farmer in the Northern Plains region of the United States is able to maximize profits? Question 56. 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 statement displays the address of the variable num1? Small-scale farmers in Asia often lacked the resources necessary to acquire the hybrid . 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. In the context of the Second Agricultural Revolution, which of the following trends is represented in these images? For cell transport, diffusion is the movement of small molecules across the cell membrane. Carbon dioxide is a small molecule that moves through the phospholipid bilayer with its concentration gradient by: Sodium ions are moving with their concentration gradient with the use of a protein channel across a plasma membrane. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. This electricity can do work. 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. Lettuce production in the United States is an example of commercial farming. The second sugar solution is hypertonic to the first. 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. Water is attracted to the compartment with a lower osmotic pressure. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. 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. If the outside environment of a cell is water-based, and the inside of the cell is also mostly water, something has to make sure the cell stays intact in this environment. 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. D. Secondary active transport involves the movement of a substance into a cell with its concentration gradient. 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)? Solved 1. Which of the following best explains how water - Chegg 1. A. We are not permitting internet traffic to Byjus website from countries within European Union at this time. See our Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. Which of the following best explains the process illustrated by the image? 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. The rate of this movement depends on the energy of the molecules. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. Direct link to William H's post If for example there are , Posted 5 years ago. As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . You would need to create a new account. Electrochemical gradients and the membrane potential. What do you predict will happen to the person's cells? Based on the different types of land use shown in the image, which of the following best explains why soil salinization is a concern in the arid landscape shown? Microtubules are composed of protein subunits known as: Through the microscope, you see cells swimming. Solved QUESTION 28 Which of the following best explains the - Chegg Which of the following best explains diffusion? In less developed countries, pesticides are typically applied by hand, whereas pesticides are typically applied by tractors or aircraft in more developed countries. Red blood cells behave the same way (see figure below). A cell is placed into a 3% dextrose solution. The material that diffuses could be a solid, liquid or gas. This is usually not directed in any particular manner, and can appear random. An open door is completely permeable to anything that wants to enter or exit through the door. 3.5 Passive Transport - Concepts of Biology - 1st Canadian Edition Which of the following concepts best explains the driving forces of 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. A. Also, think about where you see this happen in other places. 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). This way, the capillaries remain at a low carbon dioxide concentration, allowing the constant movement of the molecule away from cells. Na+ Ions move easily through water, which is polar, but cannot pass directly through the lipid (nonpolar) part of the cell membrane. In this experiment, you will experience how temperature affects the mixing of food coloring drops with water. One of the main characteristics of . The cell membrane allows only large molecules to diffuse into the cell. The cell membrane allows the cell to stay structurally intact in its water-based environment. How To Prolong Ejaculation During Intercourse? Which of the following solutions will cause a red blood cell to shrink? 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. 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. The liver is an organ that can synthesize lipids, such as cholesterol, and detoxify poisons, such as alcohol. what is the main difference between active transport using a carrier protein, and passive transport using facilitated diffusion? Each cell has a long tail that moves in a whip-like manner. i dont quite understand the secondary active transport. Pour all of the water down the sink, and wash out the glasses. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. Direct link to Srichchha Pradhan's post There are certainly more , Posted 6 years ago. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. When the roommate told the Emergency Department doctor what had happened, the doctor quickly began administering IV (intravenous) fluids. What is transported across a membrane during osmosis? The cytoplasm does not include the nucleus. Distinguish among hypotonic, hypertonic, and isotonic solutions. This occurs because there is a net movement of sugar molecules into the water medium. C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! Some transport processes use transport proteins in the plasma membrane, but do not require ATP. \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} 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. If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. For instance, one of the ways in which polyester is synthesized is by mixing the appropriate organic acid and alcohol in their liquid form. 266X15aX+baY+32b. Which of the following best explains diffusion? AP Bio Final 2019 | Biology Quiz - Quizizz The images show devices developed during the Second Agricultural Revolution. Active transport mechanisms can be divided into two categories. At equilibrium, movement of molecules does not stop. In its outward-facing form, the pump switches allegiances and now really likes to bind to (has a high affinity for) potassium ions. The term cytoplasm refers to the cytosol and all of the organelles, the specialized compartments of the cell. Which of the following best explains the economic advantage of the type of farm-produced goods shown in the images? 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. And sodium is highly concentrated outside of the cell, so that's where it goes during active transport considering it is low to high concentration. A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. Why Do Giant Pandas Have Low Libido? If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. Diffusion is affected by temperature, area of interaction, steepness of the concentration gradient and particle size. Similarly, if a canister of liquid nitrogen leaks a little, nitrogen gas that escapes would quickly diffuse into the atmosphere. 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.