which of the following best explains diffusion?

Which of the following best describes the survey system used in both locations shown? Domestication of plants and animals evolved in each hearth independently of one another as societies in each area learned and applied the process to local plants and animals. 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. Philibert, J. In secondary active transport, the two molecules being transported may move either in the same direction (i.e., both into the cell), or in opposite directions (i.e., one into and one out of the cell). concentrated salt solution. Which one of the following processe | Filo Increase C. Decrease D. It would depend on the nature and temperature of the coolant, 3. A. Golgi apparatus C. detoxify certain chemicals D. through oxidation reactions The Green Revolution led to an increase in food production in many places around the world, but there have been some negative consequences. For each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. The membrane has pores and openings to allow the passage of specific molecules. solute: a substance dissolved in another to form a solution. The cell membrane allows the cell to stay structurally intact in its water-based environment. Does it move differently in the hot water than the cold water? The images shown illustrate a change that took place as the Second Agricultural Revolution coincided with the Industrial Revolution. i dont quite understand the secondary active transport. Direct link to zykeriaprice2's post what is the main differen, Posted 7 years ago. Which of the following best explains the process illustrated by the image? Which of the following best explains the economic advantage of the type of farm-produced goods shown in the images? The function of the plasma membrane is to control what goes in and out of the cell. Diffusion is the mixing of substances due to the movement of their particles. By diffusion: glucose will move from solution B to solution A. Passive processes that move substances across membranes ________. Diffusion helps in the movement of substances in and out of the cells. If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. Identify the polar and nonpolar regions of a cell membrane. Water moves into and out of cells by osmosis. Water leaves the cells and the cells shrink. 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. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). D. Secondary active transport involves the movement of a substance into a cell with its concentration gradient. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. Diffusion can either be simple diffusion and be facilitated by another molecule. On the other hand, facilitated diffusion, as the term indicates, requires the presence of another molecule (the facilitator) in order for diffusion to occur. A solution that contains fewer solutes than the cell is ________ to the cell. B. 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). This process does not require energy. It is simply the statistical outcome of random motion. if there are more Potassium ions in a cell, how is the cell negatively charged? Na+ Diffusion is the movement when molecules move from higher concentrated area to lower concentrated area. The kinetic energy of the molecules results in random motion, causing diffusion. ; Diffusion occurs in liquids and gases when their particles collide randomly and . Instead of feeling drunk, she felt nauseated, developed a severe headache, began to get confused, and then became unconscious. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. Fish cells, like all cells, have semipermeable membranes. Which of the following best explains the importance of climate to agricultural practices? In its outward-facing form, the pump switches allegiances and now really likes to bind to (has a high affinity for) potassium ions. The difference in the concentrations of the molecules in the two areas is called the concentration gradient. If there was a coolant near the mouth of a crucible heating iodine how would that affect its rate of diffusion? A. Wheat was first domesticated in Mesopotamia because of a favorable climate and a great diversity of wild grains that led to crossbreeding of seeds. A cell is isotonic to the surrounding 4% dextrose solution. The food coloring mixes through the hot water faster than it mixes with the cold water. Her much more prepared A&P student roommate quickly realized the problem and called an ambulance. Can you predict, based on the first way of doing the experiment, what might change, if anything? What assists the movement of substances by facilitated diffusion? We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Sheep production is an example of extensive agriculture requiring large pastures, whereas poultry production is an example of intensive agriculture often practiced indoors. If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. 266X15aX+baY+32b. A. What is transported across a membrane during osmosis? Epinephrine diffuses through the plasma membrane; the hormone dimerizes in the cytosol. The rate of this movement depends on the energy of the . Which of the following is not required for osmosis to occur? The number of molecules that only collide with other carbon dioxide particles within dry ice decreases. 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. The two images represent two different methods of raising livestock in the United States. This process takes place in the following steps: To begin, the pump is open to the inside of the cell. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. 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. 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. Unit 3 Culture Test | Geography Quiz - Quizizz As time progresses, the differential gradient of concentrations between high and low will drop (become increasingly . 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. An electrical potential difference exists whenever there is a net separation of charges in space. 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. A. selectively permeable: the characteristic of a membrane that allows some substances through but not others. The three main kinds of passive transport are diffusion (or simple diffusion), osmosis, and facilitated diffusion. to send you a reset link. The hypertonic solution is one one side of the membrane and the hypotonic solution on the other. An example of this is the way the noxious smell of ammonia gas spreads in air. 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. (a) Osmosis UEE Main-2020 (Septeimbern) (c) Diffusion (b) Reverse osmosis (d) Dialysis 26. The rate of diffusion depends on the nature of interaction between the medium and material. 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. It is an important process occurring in all living beings. This creates a concentration gradient, with concentration of carbon dioxide gradually decreasing with distance from the lump of dry ice. 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. what is the main difference between active transport using a carrier protein, and passive transport using facilitated diffusion? Labor-intensive farming of vegetables is done in small-scale plots in market gardens, while extensive grain crops are grown in large-scale fields far from the market town. Direct link to tyersome's post Great question since pr, Posted 7 years ago. This experiment was selected for Science at Home because it teaches NGSS Disciplinary Core Ideas, which have broad importance within or across multiple science or engineering disciplines. Primary and secondary active transport. a.QH=500kW,QC=100kWb.QH=500kW,Wcycle=250kW,QC=200kWc.Wcycle=350kW,QC=150kWd.QH=500kW,QC=200kW\begin{array}{l}{\text { a. } Sucrose cannot pass through a red blood cell's plasma membrane, but water and urea can. In fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. But now you have two mixtures of different solute concentrations. A. "Diffusion. Type of active transport in which sodium and potassium are pumped across a membrane using ATP, Type of passive process in which water is moved through aquaporins, Type of passive process in which molecules move across the plasma membrane down a concentration gradient, Type of active process in which the cell engulfs extracellular substances by phagocytosis or pinocytosis. In this experiment, the food coloring that gets added is the same temperature in each of the hot and cold water tests. D. The IV fluid should be hypotonic to the patient's blood. Which of the following is a characteristic of the cell membrane? The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out. Which of the following best explains the Green Revolution's highly variable level of success in increasing agricultu. Do not mix or stir. 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? To move substances against a concentration or electrochemical gradient, a cell must use energy. The mixture of a solute in a solvent is called a solution. Channels are very selective and will accept only one type of molecule (or a few closely related molecules) for transport. Active transport works by using a phosphate group from ATP to change the shape of the protein and thus do work. Overall, there are more positive charges on the outside of the membrane than on the inside. At any given temperature, the diffusion of a smaller particle will be more rapid than that of a larger-sized molecule. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. Which of the following best explains diffusion? Similarly, the medium in which diffusion occurs could also be in one of the three physical states. Which of the following best explains diffusion? While this could be facilitated by other molecules, it does not directly involve high-energy molecules such as adenosine triphosphate (ATP) or guanosine triphosphate (GTP).