Which of the following best explains the risks associated with pesticide applications? Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. If the cell is moved to a 6% dextrose solution, then predict what will happen to the cell. As a result of the EUs General Data Protection Regulation (GDPR). As a simple example, a few crystals of sugar in a glass of water will slowly dissolve over time. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). This property can be observed even better if the gas has an odor or color. 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. start superscript, 2, comma, 3, end superscript, start superscript, 4, comma, 5, end superscript. Which of these components add specialized functions to the plasma membrane? If you knew the answer, tap the green Know box. Solution A and solution B are separated by a semipermeable membrane. does the glucose molecule just randomly attach itself to the protein when it's about to transport a sodium ion to the other side? Predict what will happen to a patient's red blood cells if you give the patient an IV of pure water. Facilitated diffusion is diffusion that is helped along (facilitated by) a membrane transport channel. Look at the large card and try to recall what is on the other side. It is an important process occurring in all living beings. molecules move through transport proteins that have been activated by ATP. Which of the following is the main component of the cell membrane? 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. Though water is a polar molecule, it can also diffuse through the plasma membrane. For instance, when iodine is sublimated over a hot stove, purple fumes begin to appear and mix with air. Typically, diffusion refers to the movement of molecules from high concentrations to lower concentrations. The two images represent two different methods of raising livestock in the United States. Agricultural settlement patterns are partly determined by the survey system used to organize landownership. So something must protect the cell and allow it to survive in its water-based environment. Do you think the temperature of the food coloring might have an effect on how it diffuses? The rate of diffusion depends on the nature of interaction between the medium and material. Use these flashcards to help memorize information. Muscle cells require an abundant amount of ATP to function. Which of the following spatial patterns is best explained by bid-rent theory? Mr. Weddington was admitted to the hospital with chronic heart failure. (2005). Therefore, they are NOT able to __________. By what endocytosis process do some white blood cells engulf bacteria? Facilitated diffusion requires the assistance of proteins. & y_1^{\prime}=3 y_2 \\ When deoxygenated blood is in your capillaries in your lungs, the oxygen in your lungs diffuses from a higher concentration in your lungs to the lower concentration in your blood. Which of the following correctly explains the relationship between wheat and its early hearth of domestication? Na+ Water leaves the cells and the cells shrink. 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. The same gas would diffuse slightly more slowly in a liquid such as water and slowest in a solid. answer choices The greater the difference in concentration, the quicker the rate of diffusion. Which of the following solutions contains the most solute? Which of the following best explains why farmers would plant both strawberries and watermelons in the same field? Diffusion helps in the movement of substances in and out of the cells. Phosphorylation makes the pump change shape, re-orienting itself so it opens towards the extracellular space. Wipe up any spills that may have happened. Some transport processes use transport proteins in the plasma membrane, but do not require ATP. 2.1: Osmosis - Biology LibreTexts A. synthesize proteins Solved Which of the following best explains the effect of - Chegg Na+/K+ pump. 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. 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. how does the carrier protein "harness" energy from another molecules concentration gradient? 60 seconds. passive transport: a method of transporting material that does not require energy. 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. Intensive agriculture is practiced in a Mediterranean climate. The Diffusion of Oxygen, Carbon Dioxide, and Inert Gas in Flowing Blood. However, the same phenomenon is not seen when immiscible liquids like petrol and water are mixed together. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? Direct link to William H's post If for example there are , Posted 5 years ago. 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. Cells utilize oxygen in the mitochondria for aerobic respiration, which generates carbon dioxide gas as a byproduct. 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. A. On the other extreme, a red blood cell that is hypotonic (lower concentration outside the cell) will result in more water flowing into the cell than out. Increase C. Decrease D. It would depend on the nature and temperature of the coolant, 3. Each of these factors, independently and collectively can alter the rate and extent of diffusion. Facilitated diffusion is powered entirely by GTP hydrolysis B. 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. this monosaccharide yields the most energy of all macromolecules. What type of cellular extension have you observed? Your email address is only used to allow you to reset your password. But now you have two mixtures of different solute concentrations. An example of this is the way the noxious smell of ammonia gas spreads in air. Which of the following best explains diffusion? Which of the following explains the prevalence of banana plantations in Central America? Which of the following explains an economic benefit of cattle production using feedlots rather than grass pastures? This is related to both the mass of the molecule and its surface area. Privacy Policy and Which of the following best explains the spatial patterns illustrated in von Thnens model? The tonicity of the IV fluid doesn't matterthe patient won't be in the operating room that long so any tonicity would be OK for a couple of hours. Otherwise, tap the red Don't know box. What transport process can create a concentration gradient for sodium across the plasma membrane? In chemical processes, diffusion is often the central principle driving many reactions. The mechanization of farm work allowed many young people to migrate and join a growing urban industrial workforce. 266X15aX+baY+32b. Which of the following best explains the potential impact of rising global temperatures on agricultural regions? This results in crenation (shriveling) of the blood cell. Posted 7 years ago. Solved 1. Which of the following best explains how water - Chegg Requested URL: byjus.com/biology/diffusion/, User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62. Which of the following best explains the importance of climate to agricultural practices? This can even be observed visually by the addition of different colored dyes to each of the liquids. How, exactly, does the sodium-potassium pump establish a voltage across the membrane? Imagine you're preparing a barbecue of grilled chicken and salad for friends. Spontaneous activity releases energy, non-spontaneous activity (like moving something against its concentration gradient) requires energy. Because diffusion happens from high concentration to low concentration, the more molecules are moving, the more opportunities they have to mix together. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells. The use of improved plant hybrids and agricultural chemicals. Which of the following best compares a technological consequence of the Green Revolution in more developed and less developed countries? Describe flow of solvent molecules across a membrane. B. digest and recycle damaged organelles Which of the following statements most accurately compares these two agricultural practices? Overall, there are more positive charges on the outside of the membrane than on the inside. molecules move through transport proteins that have been activated by ATP. Which of the following organelles will be abundant in liver cells? As a prokaryotic cell does not have a nucleus, the DNA is in the cytoplasm. This is usually not directed in any particular manner, and can appear random. 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. Drought and depletion of groundwater sources in developing countries cause a rise in global grain prices and associated higher costs for food. Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. Stirring increases the area of interaction between the two chemicals and allows these molecules to diffuse towards each other more quickly. Which of the following is not a passive process? Minerals For Erectile Dysfunction - Camping Estanyet 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!? At that concentration, the solution is isotonic to the cell. B. smooth endoplasmic reticulum Examples of molecules that can easily diffuse across the plasma membrane include carbon dioxide and oxygen gas. Diffusion can either be simple diffusion and be facilitated by another molecule. Why Do Giant Pandas Have Low Libido? Predict behavior of blood cells in different solution types. This statement describes _____. However, the township-and-range system uses simplified calculation to create a more ordered landscape. { "8.1:_Concentrations_of_Solutions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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