which of the following best explains diffusion?

Instead of feeling drunk, she felt nauseated, developed a severe headache, began to get confused, and then became unconscious. What transport process can create a concentration gradient for sodium across the plasma membrane? Use these flashcards to help memorize information. Examples of molecules that can easily diffuse across the plasma membrane include carbon dioxide and oxygen gas. The SER synthesizes the majority of the lipid components of the plasma membrane. Adult should review each experiment and determine what the appropriate age is for the students participation in each activity before conducting any experiment. The food coloring mixes through the hot water faster than it mixes with the cold water. synthesize ATP, Which of the following organelles synthesizes proteins? What do you predict will happen to the person's cells? If sublimation is carried out in a narrow crucible, the fumes diffuse slowly out towards the mouth of the container and then rapidly disappear. Mastering A&P Chapters 1-3 Flashcards | Quizlet When you've placed seven or more cards in the Don't know box, tap "retry" to try those cards again. The cell membrane lets certain substances enter the cell and keeps certain substances out of the cell. A. synthesize proteins Because a solute moving down its concentration gradient is spontaneous. Primary active transport, secondary active transport, exocytosis, and endocytosis are all what type of process? what is the main difference between active transport using a carrier protein, and passive transport using facilitated diffusion? C. The SER manufactures proteins for export from the cell. In an antiporter it uses the energy of the ions flowing down their concentration gradient. answer choices Through the process of ethnocentrism, American culture has spread throughout the world. diffusion: [noun] the state of being spread out or transmitted especially by contact : the action of diffusing. Predict behavior of blood cells in different solution types. The passive process that involves the movement of water through aquaporins is ________. 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). 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. Which of the following is NOT one of the functions of the cytoskeleton? Your email address is only used to allow you to reset your password. The material that diffuses could be a solid, liquid or gas. how does the carrier protein "harness" energy from another molecules concentration gradient? This voltage will be maintained as long as K, For more explanation of how the voltage across the membrane is established, take a look at the. Similarly, if a canister of liquid nitrogen leaks a little, nitrogen gas that escapes would quickly diffuse into the atmosphere. Lipids do not mix with water (recall that oil is a lipid), so the phospholipid bilayer of the cell membrane acts as a barrier, keeping water out of the cell, and keeping the cytoplasm inside the cell. Based on the different types of land use shown in the image, which of the following best explains why soil salinization is a concern in the arid landscape shown? Direct link to Samuel Mayer's post In an antiporter it uses , Posted 7 years ago. Which of the following organelles will be abundant in liver cells? If the concentration of dextrose in the solution is increased to 5%, the cell is now in a(n): The total solute concentration of a red blood cell is about 2%. Red blood cells behave the same way (see figure below). Which of the following scenarios best explains the Columbian Exchange? In biological systems, diffusion occurs at every moment, across membranes in every cell as well as through the body. (a) Osmosis UEE Main-2020 (Septeimbern) (c) Diffusion (b) Reverse osmosis (d) Dialysis 26. how does the antiporter provide energy for molecules to go in the "opposite" direction? Simple diffusion and osmosis do not involve transport proteins. 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. Question 1 Which of the following can best explain why eukaryotic cells C. detoxify certain chemicals D. through oxidation reactions This property can be observed even better if the gas has an odor or color. These farmers and traders exchanged the domesticated plants between themselves. This may seem like a complicated cycle, but it just involves the protein going back and forth between two forms: an inward-facing form with high affinity for sodium (and low affinity for potassium) and an outward-facing form with high affinity for potassium (and low affinity for sodium). Direct link to auzennesylvester92's post Are these pumps negativel, Posted 5 years ago. Posted 7 years ago. The inside of all cells also contain a jelly-like substance called cytosol. Free Flashcards about AP human practice Direct link to priciaauy's post why wouldnt cells use atp, Posted 4 years ago. Which of the following best explains the significance of similarities between the farming practices for apple orchards and grape vineyards? How To Prolong Ejaculation During Intercourse? The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out. B. 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. Simple diagram of a symporter (carrying two molecules in the same direction) and an antiporter (carrying two molecules in opposite directions). Muscle cells require an abundant amount of ATP to function. So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. Background. The concentration of sodium ions is lower inside the cell than in the extracellular fluid, while the reverse is true for potassium ions. What is required for its transport? The membrane has pores and openings to allow the passage of specific molecules. The best explanation for the diffusion of plants and animals from their hearths of domestication is option C. Contagious diffusion in the early years was a way of spreading from one person to the other. Invention of the plow eased the intensive use of labor, and the innovation of mechanized farm equipment led to improved food production. The rate of this movement depends on the energy of the molecules. Which of the following best explains the spatial patterns illustrated in von Thnens model? Biologydictionary.net, April 27, 2017. https://biologydictionary.net/diffusion/. The reaction proceeds as the two reactants diffuse towards each other and undergo a chemical reaction to form esters. His feet and legs were swollen with fluid. Your cells have a plasma membrane that helps to guard your cells from unwanted intruders. 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. Which of the following processes require the use of protein carrier molecules? Secondary active transport uses the energy stored in these gradients to move other substances against their own gradients. Diffusion and Osmosis - Difference and Comparison | Diffen In the context of the Second Agricultural Revolution, which of the following trends is represented in these images? Direct link to Yuya Fujikawa's post Hi, I'm just a little cur, Posted 5 years ago. Conversely, in active transport, the solute moves against the concentration gradient, from regions of lower to higher concentration. B. digest and recycle damaged organelles are in the same box the next time you log in. Water leaves the cells and the cells shrink. To move substances against a concentration or electrochemical gradient, a cell must use energy. "Diffusion." 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 both solutions are isotonic. ), y1=3y2y2=12y1\begin{aligned} If the cell is moved to a 6% dextrose solution, then predict what will happen to the cell. As a prokaryotic cell does not have a nucleus, the DNA is in the cytoplasm. Wipe up any spills that may have happened. The mechanization of farm work allowed many young people to migrate and join a growing urban industrial workforce. This can occur with all sorts of matter, but is most commonly observed in liquids and gases. At equilibrium, there is equal movement of materials in both directions. A cell is isotonic to the surrounding 4% dextrose solution. 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. Which of the following best explains the farming practice related to plantation agriculture? B. The cell is therefore not completely permeable. By osmosis: water will move from solution A to solution B. Drought and depletion of groundwater sources in developing countries cause a rise in global grain prices and associated higher costs for food. Which of the following best explains diffusion? Irrigation increases the salt content of the soil, which disrupts the growth of crops and degrades soil fertility. Active transport works by using a phosphate group from ATP to change the shape of the protein and thus do work. Feedlots can minimize costs associated with livestock production because feedlots do not use as much space as cattle ranching. Diffusion is the process of movement of molecules under a concentration gradient. C. movement of molecules from an area of high concentration to an area of low concentration. When these molecules collide with one another, there is a change in the direction of movement as well as changes to momentum and velocity. Then tap the card to flip it. Which of the following best describes advances in the production of textiles during the Second Agricultural Revolution and the Industrial Revolution? (2017, April 27). D. The SER stores calcium ions. Mr. Weddington was admitted to the hospital with chronic heart failure. Put it in freshwater, and the freshwater will, through osmosis, enter the fish, causing its cells to swell, and the fish will die. Which of the following best explains the reasons for the similarities and differences between the two land survey systems shown? Similarly, the medium in which diffusion occurs could also be in one of the three physical states. "Permeable" means that anything can cross a barrier. The Diffusion of Oxygen, Carbon Dioxide, and Inert Gas in Flowing Blood. Because it is faster to utilize already available ATP through the electrochemical gradient. C. Secondary active transport occurs when the movement of one substance is coupled with the passive transport of a second substance. A. Golgi apparatus Which of the following is the best situation for maintaining homeostasis? In other words, plasma . answer choices The English language initially diffused to North America through the process of relocation diffusion. How is the , Posted 7 years ago. The plasma membrane is semipermeable, meaning that some things can enter the cell, and some things cannot. Concentric rings of different agricultural activities surrounding a city in the midwestern United States. Which of the following explains the diffusion and successful cultivation of many plants and animals in new regions of the world through the Columbian Exchange? The latter may be 0.5 um while the former may be 100 um (which is more than 10X in comparative size). Describe flow of solvent molecules across a membrane. The reaction proceeds towards completion at a faster rate. So something must protect the cell and allow it to survive in its water-based environment. Which of the following best explains diffusion? Direct link to zykeriaprice2's post what is the main differen, Posted 7 years ago. That is because the molecules from the food odor havent diffused into that space yet. This process does not require energy. The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____. Which of the following explains how global demand for palm oil has proved beneficial and detrimental f. Palm oil exports provided substantial corporate profits, but the growth in the industry resulted in heavy deforestation in both countries. 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. In fact, cells spend much of the energy they harvest in metabolism to keep their active transport processes running. See our Which of the following solutions will cause a red blood cell to shrink? this monosaccharide yields the most energy of all macromolecules. Since they are relatively large openings in the plasma membrane, these integral membrane proteins also have high specificity. A Diffusion provides encryption strength, while confusion provides data integrity B. Diffusion provides function integrity, while confusion provides encryption confidentiality. When the roommate told the Emergency Department doctor what had happened, the doctor quickly began administering IV (intravenous) fluids. In this form, the pump really likes to bind (has a high affinity for) sodium ions, and will take up three of them.

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