The number of molecules that only collide with other carbon dioxide particles within dry ice decreases. 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 long pham's post if there are more Potassi, Posted 6 years ago. This property can be observed even better if the gas has an odor or color. Farmers' health is at risk in less developed countries, whereas environmental pollution is a risk in more developed countries. 60 seconds. When oxygen is moving towards tissues from capillaries, carbon dioxide is entering the bloodstream. Which of the following best explains the differences between the patterns of land use in the township-and-range system and the long-lot system, as shown in the images? Direct link to William H's post If for example there are , Posted 5 years ago. A. smooth endoplasmic reticulum Which of the following is used to export large molecules from the cell? But now you have two mixtures of different solute concentrations. The IV fluid should be isotonic to the patient's blood. As an example, let's suppose we have a high concentration of sodium ions in the extracellular space (thanks to the hard work of the sodium-potassium pump). Which of the following is the best situation for maintaining homeostasis? Which of the following concepts best explains the driving forces of Facilitated diffusion is necessary for the biochemical processes of every cell since there is communication between various subcellular organelles. Passive processes that move substances across membranes ________. Which of the following is NOT one of the functions of the cytoskeleton? In the context of the Second Agricultural Revolution, which of the following trends is represented in these images? Which of the following best explains diffusion? Water moves into and out of cells by osmosis. Direct link to liweiong272's post Main difference: In facil, Posted 6 years ago. This example also shows that the diffusion of any one material is independent of the diffusion of any other substances. The plasma membrane is semipermeable, meaning that some things can enter the cell, and some things cannot. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? The membrane has pores and openings to allow the passage of specific molecules. To move substances against a concentration or electrochemical gradient, a cell must use energy. These farmers and traders exchanged the domesticated plants between themselves. osmosis, simple diffusion, facilitated diffusion are all what type of process? C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. Direct link to Samuel Mayer's post In an antiporter it uses , Posted 7 years ago. 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 Direct link to City Face's post Because a solute moving d, Posted 7 years ago. 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. Secondary active transport uses the energy stored in these gradients to move other substances against their own gradients. Which of the following is not a major function of proteins in the cell membrane? The use of improved plant hybrids and agricultural chemicals. Facilitated diffusion requires the assistance of proteins. Which of the following best describes the settlement patterns shown in the images? To log in and use all the features of Khan Academy, please enable JavaScript in your browser. 8.4: Osmosis and Diffusion - Chemistry LibreTexts 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. 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? The cell is therefore not completely permeable. The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. The greater the surface area, the faster the rate of diffusion. Water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. to send you a reset link. 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. Imagine you have a cup that has \(100 \: \text{mL}\) water, and you add \(15 \: \text{g}\) of table sugar to the water. The long-lot system results in population clustered along a waterway, whereas the metes-and-bounds system results in a random, dispersed population pattern. Both farming practices require considerable labor input because the fruit is picked by hand, making it a product of intensive agriculture. 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!? 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 the following best explains the Green Revolution's highly variable level of success in increasing agricultu. Image depicting the charge and ion distribution across the membrane of a typical cell. Which of the following solutions will cause a red blood cell to shrink? Sheep production in New Zealand and poultry production in Arkansas produce food animals for human consumption. Grocery stores sell oranges that are grown in locations with similar climates but different growing seasons. movement of molecules from an area of high concentration to an area of low concentration. Does it move differently in the hot water than the cold water? Solved 1. Which of the following best explains how water - Chegg 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. If a cell is in a hypertonic solution, the solution has a . The material that diffuses could be a solid, liquid or gas. i dont quite understand the secondary active transport. 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. 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. 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. The second sugar solution is hypertonic to the first. 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. In any system, molecules are moving with a certain amount of kinetic energy. Your email address is only used to allow you to reset your password. 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. The same gas would diffuse slightly more slowly in a liquid such as water and slowest in a solid. 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. As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . What is required for filtration to occur? ADP is released as a by-product. Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. What process does water use to move across the plasma membrane? If you say something, I ll ask someone at what age erectile dysfunction starts to clean it up. A. synthesize proteins 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. Which of these statements is NOT true? Glucose is the most commonly used energy source by human cells because (Points: 1) this is the most abundant macromolecule available for cellular respiration. This statement describes _____. Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. The images show examples of agricultural technology developed during different time periods. Which of the following best describes the survey system used in both locations shown? The site owner may have set restrictions that prevent you from accessing the site. Sheep production is an example of extensive agriculture requiring large pastures, whereas poultry production is an example of intensive agriculture often practiced indoors. Similarly, the medium in which diffusion occurs could also be in one of the three physical states. What conditions affect the diffusion of a substance in water? He should be given a hypotonic drip to draw fluid out of his cells. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). 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. Human Anatomy & Physiology- MyLab & Mastering AandP- Ch 03 HW Incorrect options: Option A is incorrect because space-time compression is the shortened time or communication between two places. A substance moves by facilitated diffusion into a cell. Diffusion Definition & Meaning - Merriam-Webster What do you predict will happen to the person's cells? If the cell is moved to a 6% dextrose solution, then predict what will happen to the cell. Imagine now that you have a second cup with \(100 \: \text{mL}\) of water, and you add \(45 \: \text{g}\) of table sugar to the water. 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). (a) Osmosis UEE Main-2020 (Septeimbern) (c) Diffusion (b) Reverse osmosis (d) Dialysis 26. Agricultural settlement patterns are partly determined by the survey system used to organize landownership. Limited farmland encourages intensive farming with intercropping to produce high yields. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? Diffusion is an important part of many biological and chemical processes. A fish that lives in salt water will have somewhat salty water inside itself. A solution that contains fewer solutes than the cell is ________ to the cell. We are not permitting internet traffic to Byjus website from countries within European Union at this time. 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. Though water is a polar molecule, it can also diffuse through the plasma membrane. A&P HW 5 Flashcards | Quizlet D. mitochondria, Which of the following is a function of lysosomes? Which statement displays the address of the variable num1? Learn more about how this experiment is based in NGSS Disciplinary Core Ideas. 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. Solved QUESTION 28 Which of the following best explains the - Chegg Active transport: primary & secondary overview (article) | Khan Academy C. detoxify certain chemicals D. through oxidation reactions These channels are . D. The SER stores calcium ions. synthesize ATP, Which of the following organelles synthesizes proteins? However, for molecules in the periphery, rapidly moving molecules in the air also influence their movement, allowing them to diffuse into the air. Retrieved from https://biologydictionary.net/diffusion/. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient". A. Do not mix or stir. Posted 7 years ago. Diffusion happens slowly and only across the small surface of interaction between the two fluids. Active transport works by using a phosphate group from ATP to change the shape of the protein and thus do work. \dot{Q}_{\mathrm{H}}=500 \mathrm{kW}, \dot{Q}_{\mathrm{C}}=100 \mathrm{kW}} \\ {\text { b. } This type of transport is known as _____. 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. An open door is completely permeable to anything that wants to enter or exit through the door. Biology Dictionary. Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. ", Biologydictionary.net Editors. ), y1=3y2y2=12y1\begin{aligned} how does the antiporter provide energy for molecules to go in the "opposite" direction? Township and range: unit-block field patterns with dispersed farmsteads and occasional villages. Palm oil, an edible vegetable oil used in processing packaged food products, is obtained from the fruit of the oil palm tree, grown only in the tropics. 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). Which of the following best explains the diffusion of plants and 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. Red blood cells behave the same way (see figure below). The hypertonic solution is one one side of the membrane and the hypotonic solution on the other. What part of the plasma membrane is hydrophobic? "Permeable" means that anything can cross a barrier. The function of the plasma membrane is to control what goes in and out of the cell. At any given temperature, the diffusion of a smaller particle will be more rapid than that of a larger-sized molecule. So something must protect the cell and allow it to survive in its water-based environment. However, the same phenomenon is not seen when immiscible liquids like petrol and water are mixed together. For example, oxygen is at a higher concentration inside arteries and arterioles, when compared with the oxygen levels in actively respiring cells. D. Golgi apparatus. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. The English language became a widely spoken language in North America in the twentieth century. For best results enter two or more search terms. \end{aligned} While they are confined to the smaller surface area within the crucible, the rate of diffusion remains low. Which of the following correctly compares the significance of the different technologies shown in the images? Spaeth, E. E., and Friedlander, S.K. In facilitated diffusion, molecules only move with the aid of a protein in the membrane. The reaction proceeds as the two reactants diffuse towards each other and undergo a chemical reaction to form esters. The two images represent different agricultural land survey patterns. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. 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. 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 What do you predict will happen to the person's cells? Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. what is the main difference between active transport using a carrier protein, and passive transport using facilitated diffusion? Can you find a safe way to heat or cool the food coloring before adding it to the water? Which of the following best explains the significance of similarities between the farming practices for apple orchards and grape vineyards? So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. Minerals For Erectile Dysfunction - Camping Estanyet We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Simple diffusion and passive transport (article) | Khan Academy Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. Typically, diffusion refers to the movement of molecules from high concentrations to lower concentrations. 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. Divide the following terms into component parts and give the meanings of the complete terms. It is an important process occurring in all living beings. The conversion from manual thread spinning to an industrial processing approach led to increased demand for raw cotton in the agricultural sector. Which of the following best explains diffusion? The rate of this movement depends on the energy of the molecules. 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 explains why in the model the amount of land used for dairying is much smaller than the pasture used for beef cattle? One phosphate group from ATP is attached to the pump, which is then said to be phosphorylated. 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. To unpackage and unwind DNA so that enzymes can access the individual genes. Secondary active transport involves the movement of a substance into a cell through a protein channel with its concentration gradient. For instance, when iodine is sublimated over a hot stove, purple fumes begin to appear and mix with air. Primary active transport, secondary active transport, exocytosis, and endocytosis are all what type of process? thank you. "Diffusion. If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. Agricultural technology has increased the economy of scale and the carrying capacity of feedlots, increasing profits for the farmer. Diffusion - BBC Bitesize Diagram of a sodium-glucose cotransporter, which uses the energy stored in a sodium ion gradient to transport glucose "uphill" against its gradient. Figure showing the transport cycle of the sodium-potassium pump. y1=3y2y2=12y1. Everything in the cell sits in the cytosol, like fruit in a Jell-o mold. are in the same box the next time you log in. Which cell junctions prevent substances from passing between adjacent cells? 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. Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? Legal. Which Of The Following Best Explains Diffusion Quizlet? A. Which of the following best explains the farming practice related to plantation agriculture? As a prokaryotic cell does not have a nucleus, the DNA is in the cytoplasm. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality.
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