which of the following best explains diffusion?

Learn more about how this experiment is based in NGSS Disciplinary Core Ideas. Then tap the card to flip it. As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . Which of the following correctly compares the significance of the different technologies shown in the images? This is related to both the mass of the molecule and its surface area. 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 best compares a technological consequence of the Green Revolution in more developed and less developed countries? 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. Which of the following best explains this change? 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. Direct link to City Face's post Because a solute moving d, Posted 7 years ago. 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. Diffusion is the movement when molecules move from higher concentrated area to lower concentrated area. Use these flashcards to help memorize information. No tracking or performance measurement cookies were served with this page. At this point, equilibrium is reached. The cell is therefore not completely permeable. Which of the following best explains the diffusion of plants and 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. concentrated salt solution. Which one of the following processe | Filo Direct link to auzennesylvester92's post Are these pumps negativel, Posted 5 years ago. This type of transport is known as _____. 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. Image 2 shows an innovation that occurred in the Second Agricultural Revolution, reducing the amount of labor needed and increasing crop yields. A substance moves by facilitated diffusion into a cell. 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. Which of the following is most likely to move through the cell membrane by facilitated diffusion? Direct link to William H's post If for example there are , Posted 5 years ago. D. Golgi apparatus. 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. answer choices The English language initially diffused to North America through the process of relocation diffusion. Sheep production in New Zealand and poultry production in Arkansas produce food animals for human consumption. Diffusion in the human body is necessary for the absorption of digested nutrients, gas exchange, the propagation of nerve impulses, the movement of hormones and other metabolites towards their target organ and for nearly every event in embryonic development. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. 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. To move substances against a concentration or electrochemical gradient, a cell must use energy. Not everything can make it into your cells. In most biological systems, diffusion occurs across a semi-permeable membrane made of a lipid bilayer. The site owner may have set restrictions that prevent you from accessing the site. Epinephrine binds to a cell-surface receptor; the activated receptor catalyzes the conversion of glycogen to glucose. Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. The reaction proceeds as the two reactants diffuse towards each other and undergo a chemical reaction to form esters. Can you predict, based on the first way of doing the experiment, what might change, if anything? 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. PS1.A: Structure and Properties of Matter, PS3.C: Relationship Between Energy and Forces. Distinguish among hypotonic, hypertonic, and isotonic solutions. Drought and depletion of groundwater sources in developing countries cause a rise in global grain prices and associated higher costs for food. Prior to this, very few animals had been domesticated in the Americas. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? The material that diffuses could be a solid, liquid or gas. 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} \\ Which of the following best explains diffusion? All the examples given above were instances of simple diffusion. Do you think the temperature of the food coloring might have an effect on how it diffuses? Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. Conversely, in active transport, the solute moves against the concentration gradient, from regions of lower to higher concentration. What part of the plasma membrane is hydrophobic? The food coloring mixes through the hot water faster than it mixes with the cold water. (Show the details. Glucose is the most commonly used energy source by human cells because (Points: 1) this is the most abundant macromolecule available for cellular respiration. The two images represent different agricultural land survey patterns. (2005). (a) Osmosis UEE Main-2020 (Septeimbern) (c) Diffusion (b) Reverse osmosis (d) Dialysis 26. What separates the intracellular fluid from the extracellular fluid? Question 12 30 seconds Q. 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. Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. Water leaves the cells and the cells shrink. Active transport: primary & secondary overview (article) | Khan Academy A. Background. This type of transport is known as _____. this monosaccharide yields the most energy of all macromolecules. Simple diffusion is relevant in chemical reactions, in many physical phenomena, and can even influence global weather patterns and geological events. Nuclear pores connect the cytoplasm with the nucleoplasm and allow substances to move between the two areas. A cell is isotonic to the surrounding 4% dextrose solution. A. The brands listed above are trademarks of 3M. Describe flow of solvent molecules across a membrane. why wouldnt cells use atp for primary active transport of glucose directly, why go through a second step? 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. Although one of these refers to chemical properties and the latter social interaction, both are examples or diffusion. Plantation farming is considered to be an intensive farming practice because it requires large inputs of labor and capital to produce the crop. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out. He should be given a hypotonic drip to draw fluid out of his cells. 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. What conditions affect the diffusion of a substance in water? Which of these statements is NOT true? A fish that lives in salt water will have somewhat salty water inside itself. The cotransporter accomplishes this by physically coupling the transport of glucose to the movement of sodium ions down their concentration gradient. Primary and secondary active transport. y1=3y2y2=12y1. 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. If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. What Is Diffusion? - Definition, Types & Examples Of Diffusion - BYJUS These molecules diffuse freely in and out of the cell, along their concentration gradient. Na+ Ions move easily through water, which is polar, but cannot pass directly through the lipid (nonpolar) part of the cell membrane. Electrochemical gradients and the membrane potential. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. In class, do you typically sit evenly spaced or all scrunched together? ; Diffusion occurs in liquids and gases when their particles collide randomly and . Each of these factors, independently and collectively can alter the rate and extent of diffusion. Which of the following is the main component of the cell membrane? shouldn't it be positively charged? Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. Remember that there is water outside the cell, and the cytoplasm inside the cell is mostly water as well. Imagine you're preparing a barbecue of grilled chicken and salad for friends. A primary active transport process is one in which __________. 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. Minerals For Erectile Dysfunction - Camping Estanyet What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? Increase C. Decrease D. It would depend on the nature and temperature of the coolant, 3. Diffusion will continue until the concentration gradient has been eliminated. Which Of The Following Best Explains Diffusion Quizlet? One phosphate group from ATP is attached to the pump, which is then said to be phosphorylated. Which one of the following processes can explain this? Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. The pump is now back to where it was in step 1, and the cycle can begin again. At 3M, we discover and innovate in nearly every industry to help solve problems around the world. Can't that serve the same role? The end result is an equal concentration, or equilibrium, of molecules on both sides of the membrane. When the sodium ions bind, they trigger the pump to hydrolyze (break down) ATP. D. The IV fluid should be hypotonic to the patient's blood. 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. \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} The image is a simple representation of the diffusion of one particle in another medium. This example also shows that the diffusion of any one material is independent of the diffusion of any other substances. By what endocytosis process do some white blood cells engulf bacteria? Diffusion is an important part of many biological and chemical processes. Question 16 30 seconds Q. Your email address is only used to allow you to reset your password. It s an accident, and I got a piece of land cheaply. C. detoxify certain chemicals D. through oxidation reactions 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. answer choices Through the process of ethnocentrism, American culture has spread throughout the world. sideropenia _____________________________________________________. Explanation: When a substance moves from higher concentrated area to a lower concentrated area, is called as diffusion. Diffusion can either be simple diffusion and be facilitated by another molecule. 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. Active transport mechanisms can be divided into two categories. ", Biologydictionary.net Editors. Which of the following explains an economic benefit of cattle production using feedlots rather than grass pastures? 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. C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! Simple diffusion is merely the movement of molecules along their concentration gradient without the direct involvement of any other molecules. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. The phospholipid is a lipid molecule with a hydrophilic ("water-loving") head and two hydrophobic ("water-hating") tails. To see how well you know the information, try the Quiz or Test activity. 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. The membrane has pores and openings to allow the passage of specific molecules. 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. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Put the food coloring back where you found it. If you knew the answer, tap the green Know box. Also, think about where you see this happen in other places. Most lettuce is produced, processed, and packaged for sale in supermarkets that are a significant distance from where the product was grown. The protein can be toggled back and forth between these forms by the addition or removal of a phosphate group, which is in turn controlled by the binding of the ions to be transported. Channels are very selective and will accept only one type of molecule (or a few closely related molecules) for transport. This increases the rate at which solute and solvent molecules move, and increases collisions. If you're seeing this message, it means we're having trouble loading external resources on our website. Human Anatomy & Physiology- MyLab & Mastering AandP- Ch 03 HW Direct link to liweiong272's post Main difference: In facil, Posted 6 years ago. movement of molecules from an area of high concentration to an area of low concentration. C. movement of molecules from an area of high concentration to an area of low concentration. how does the antiporter provide energy for molecules to go in the "opposite" direction?