which of the following best explains diffusion?

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. The pump is now back to where it was in step 1, and the cycle can begin again. To see how well you know the information, try the Quiz or Test activity. The phospholipid tails are ________, which make the plasma membrane impermeable to water. What process permits absorption of glucose into cells? Stirring increases the area of interaction between the two chemicals and allows these molecules to diffuse towards each other more quickly. 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. Muscle cells require an abundant amount of ATP to function. The difference in the concentrations of the molecules in the two areas is called the concentration gradient. All cells have a barrier around them that separates them from the environment and from other cells. The two images represent different agricultural land survey patterns. 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. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. 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. Mehrer, H. and Stolwijk, N. A. 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. Water moves into and out of cells by osmosis. The cell membrane allows the cell to stay structurally intact in its water-based environment. Drought and depletion of groundwater sources in developing countries cause a rise in global grain prices and associated higher costs for food. The kinetic energy of the molecules results in random motion, causing diffusion. 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. fats and proteins yield too much energy for the cells to process. 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 hypertonic solution has a lower water concentration than the hypotonic solution, so a concentration gradient of water now exists across the membrane. Direct link to tyersome's post Great question since pr, Posted 7 years ago. Which of the following is most likely to move through the cell membrane by facilitated diffusion? 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? You would need to create a new account. The end result is an equal concentration, or equilibrium, of molecules on both sides of the membrane. 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. It can involve either the spreading of a material through a medium or the transport of a particle across a membrane. Which of the following explains the prevalence of banana plantations in Central America? See our D. The SER stores calcium ions. Determine the type of membrane transport used to transport these sodium ions. An open beaker of water in equilibrium with water vapour is in a sealed container. The river in the long lot survey system provided better access to waterways to transport goods to market. B. digest and recycle damaged organelles Based on the map above, explain the degree to which lettuce production takes place in the United States. The material that diffuses could be a solid, liquid or gas. The same gas would diffuse slightly more slowly in a liquid such as water and slowest in a solid. As a result of the EUs General Data Protection Regulation (GDPR). This statement describes _____. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. i dont quite understand the secondary active transport. Remember that there is water outside the cell, and the cytoplasm inside the cell is mostly water as well. Conversely, in active transport, the solute moves against the concentration gradient, from regions of lower to higher concentration. What is transported across a membrane during osmosis? Diffusion is the mixing of substances due to the movement of their particles. in a symporter it makes sense that the flow of one ion should cause other molecules to go along with it, however in an antiporter, what causes the other molecule to move up its conc. What four steps should you take to reduce your risk for foodborne illnesses? 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. 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. Phosphorylation makes the pump change shape, re-orienting itself so it opens towards the extracellular space. Solution A contains 1% glucose, solution B contains 5% glucose. If the ECF is more concentrated than the cytosol, then the ECF is: A primary active transport process is one in which __________. Watch what happens to the food coloring. This statement describes _____. The images show examples of agricultural technology developed during different time periods. The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. Midlatitude climates tend to support similar agricultural crops and practices, such as wheat farming in the United States and China. In facilitated diffusion, molecules only move with the aid of a protein in the membrane. When placed in a hypertonic solution, a red blood cell will lose water and undergo crenation (shrivel). Imagine you're preparing a barbecue of grilled chicken and salad for friends. The cell membrane allows only large molecules to diffuse into the cell. Which of the following best explains diffusion? What part of the plasma membrane is hydrophobic? For example, how might this play into why coffee and tea always start with hot water? Does it move differently in the hot water than the cold water? This increases the rate at which solute and solvent molecules move, and increases collisions. "Diffusion." A typical grocery store in the United States may sell oranges grown primarily in California during part of the year and oranges grown primarily in South Africa during a different part of the year. ; Diffusion occurs in liquids and gases when their particles collide randomly and . 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 . Diffusion is the movement when molecules move from higher concentrated area to lower concentrated area. Red blood cells behave the same way (see figure below). how does the antiporter provide energy for molecules to go in the "opposite" direction? A. Wipe up any spills that may have happened. Which of the following best explains why tea plantations are common in Sri Lanka and tea exports are important to the country's economy? Which of the following best describes the differences in the agricultural practices and land use for these products? O To edit the mRNA strand and make it ready to leave the nucleus. Mr. Weddington was admitted to the hospital with chronic heart failure. Simple diffusion is relevant in chemical reactions, in many physical phenomena, and can even influence global weather patterns and geological events. 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 image is a simple representation of the diffusion of one particle in another medium. Be sure to clean up when you are done. Plantation farming is considered to be an intensive farming practice because it requires large inputs of labor and capital to produce the crop. Therefore, muscle cells have numerous: Which statement regarding the smooth endoplasmic reticulum (SER) is false? Direct link to City Face's post Because a solute moving d, Posted 7 years ago. Which of the following explains an economic benefit of cattle production using feedlots rather than grass pastures? The images show devices developed during the Second Agricultural Revolution. What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? When the roommate told the Emergency Department doctor what had happened, the doctor quickly began administering IV (intravenous) fluids. Which of the following is not a major function of proteins in the cell membrane? 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. 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. When red blood cells are in a hypertonic (higher concentration) solution, water flows out of the cell faster than it comes in. Legal. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. Figure showing the transport cycle of the sodium-potassium pump. Which of the following is not required for osmosis to occur? 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. Cells may lyse when placed into a hypertonic environment. The function of the plasma membrane is to control what goes in and out of the cell. At this balance point, the inside of the membrane is negative relative to the outside. These farmers and traders exchanged the domesticated plants between themselves. Diffusion helps in the movement of substances in and out of the cells. Domesticated animals such as cattle, horses, pigs, and chickens were introduced to the Americas by European colonizers. A. Golgi apparatus Through the process of uniculturalism, multiple types of foods are blended together into one cuisine. Direct link to Yuya Fujikawa's post Hi, I'm just a little cur, Posted 5 years ago. One phosphate group from ATP is attached to the pump, which is then said to be phosphorylated. This allows red blood cells to carry oxygen all over your body. \end{aligned} he Na+\mathrm{Na}^{+}Na+concentration of a solution was determined by measurement with a sodium ion-selective electrode. C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! answer choices Through the process of ethnocentrism, American culture has spread throughout the world. Make sure to remember your password. This occurs because there is a net movement of sugar molecules into the water medium. What happens when body cells are placed in a hypertonic solution? Grocery stores sell oranges that are grown in locations with similar climates but different growing seasons. This results in swelling of the cell and potential hemolysis (bursting) of the cell. In fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. 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. The long-lot system results in population clustered along a waterway, whereas the metes-and-bounds system results in a random, dispersed population pattern. The reaction proceeds towards completion at a faster rate. Which of the following correctly compares the significance of the different technologies shown in the images? Channels are very selective and will accept only one type of molecule (or a few closely related molecules) for transport. Animal cells tend to do best in an isotonic environment, where the flow of water in and out of the cell is occurring at equal rates. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. C. The IV fluid should be hypertonic to the patient's blood. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } Therefore, the rate of diffusion of the gas into air also increases. Which of the following is the best situation for maintaining homeostasis? Spaeth, E. E., and Friedlander, S.K. Which of the following is NOT one of the functions of the cytoskeleton? (2017, April 27). His feet and legs were swollen with fluid. All the ways scientists do investigations. Once again, as the concentration of this gas increases within the cell, it diffuses outwards towards capillaries where the force of flowing blood removes the excess gas from the tissue region. One of the most important pumps in animal cells is the, Not only does the sodium-potassium pump maintain correct concentrations of Na.

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