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which of the following best explains diffusion?
Be sure to clean up when you are done. Which of the following best explains the spatial patterns illustrated in von Thnens model? What process does water use to move across the plasma membrane? This statement describes _____. What assists the movement of substances by facilitated diffusion? Direct link to priciaauy's post why wouldnt cells use atp, Posted 4 years ago. Which of the following scenarios best explains the Columbian Exchange? Through a process of passive diffusion, without the active involvement of any other molecule oxygen passes through the capillary membrane and enters cells. Distinguish among hypotonic, hypertonic, and isotonic solutions. Prior to this, very few animals had been domesticated in the Americas. Several large cities on the East Coast provide a growing market and shorter distances for transporting market gardening products. What organelle degrades old, worn-out organelles and cell components? The IV fluid should be isotonic to the patient's blood. Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. What do you predict will happen to the person's cells? Which of these statements about diffusion of molecules is true? (2009). Direct link to Sam's post 1) The "sodium/glucose sy, Posted 7 years ago. 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). Retrieved from https://biologydictionary.net/diffusion/. Which of the following is most likely to move through the cell membrane by facilitated diffusion? Cytosol is composed of water and other molecules, including enzymes, which are proteins that speed up the cell's chemical reactions. Direct link to l's post Questions: \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} B. smooth endoplasmic reticulum Which of the following best explains the potential impact of rising global temperatures on agricultural regions? A substance moves by facilitated diffusion into a cell. 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 hypertonic solution has a lower water concentration than the hypotonic solution, so a concentration gradient of water now exists across the membrane. 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. 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. Most lettuce is produced, processed, and packaged for sale in supermarkets that are a significant distance from where the product was grown. Imagine you're preparing a barbecue of grilled chicken and salad for friends. If you find an example of where hot or cold water is used for something that might involve diffusion, see if you can try it with the opposite and observe any differences in the results. Eventually, the concentration of "stuff" on either side of them will even out. Although one of these refers to chemical properties and the latter social interaction, both are examples or diffusion. To move substances against a concentration or electrochemical gradient, a cell must use energy. In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following? 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. The latter may be 0.5 um while the former may be 100 um (which is more than 10X in comparative size). molecules move through transport proteins that have been activated by ATP. Which of the following is the main component of the cell membrane? LEFT ARROW - move card to the Don't know pile. Because of the difference in sodium concentration (between the inside and outside of the cell) and due to the electrical potential difference (between the inside and outside of the cell), the SGLT is able to perform its function. Make sure to remember your password. Water moves into and out of cells by osmosis. By osmosis: water will move from solution A to solution B. C. Diffusion provides ciphertext heterogeneity, while confusion provides algorithm This problem has been solved! Which of the following best describes advances in the production of textiles during the Second Agricultural Revolution and the Industrial Revolution? What will happen to a freshwater fish in the ocean? Stirring increases the area of interaction between the two chemicals and allows these molecules to diffuse towards each other more quickly. All the ways scientists do investigations. At equilibrium, there is equal movement of materials in both directions. 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 Red blood cells behave the same way (see figure below). What type of cellular extension have you observed? What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane? movement of molecules from an area of high concentration to an area of low concentration. 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. Therefore, the rate of diffusion of the gas into air also increases. Never needs the presence of any other molecule C. Diffusion of every molecule is dependent on its concentration gradient and independent of the concentration of other molecular species in the medium D. All of the above, 2. Can you find a safe way to heat or cool the food coloring before adding it to the water? (Show the details. The concentration of sodium ions is lower inside the cell than in the extracellular fluid, while the reverse is true for potassium ions. Epinephrine diffuses through the plasma membrane; the hormone dimerizes in the cytosol. Invention of the plow eased the intensive use of labor, and the innovation of mechanized farm equipment led to improved food production. A. synthesize proteins Remember that there is water outside the cell, and the cytoplasm inside the cell is mostly water as well. Imagine this just like a hydroelectric power station uses the energy of water flowing down the waterfall to create electricity. He should be given a hypotonic drip to draw fluid out of his cells. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. 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. 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. Why Do Giant Pandas Have Low Libido? D. mitochondria, Which of the following is a function of lysosomes? Secondary active transport uses the energy stored in these gradients to move other substances against their own gradients. Otherwise, tap the red Don't know box. Actually, Sodium does go down its gradient but through specialized Sodium channels. A solution that contains fewer solutes than the cell is ________ to the cell. Obviously, the cell could not survive in such an environment. Muscle cells require an abundant amount of ATP to function. Microtubules are composed of protein subunits known as: Through the microscope, you see cells swimming. Which of the following best explains the significance of a similarity among locations where olives, figs, grapes and lemons are grown? & y_2^{\prime}=12 y_1 \\ 266X15aX+baY+32b. Which of the following best explains a negative economic consequence of the Green Revolution in less developed countries as compared to more developed countries? Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. Both systems require geometric calculations to survey property lines. 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. Direct link to Yago's post Why can't the Sodium move, Posted 4 years ago. Adults should handle or assist with potentially harmful materials or sharp objects. 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? 1. 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. The pump is now back to where it was in step 1, and the cycle can begin again. 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. { "8.1:_Concentrations_of_Solutions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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