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What is difusion and osmosis?
Diffusion: When small uncharged particles go through the phospholipid bilayer, it cost no ATP Osmosis: imagine a solution with a bunch of kool aid in it then you place a cell in the glass with only a little kool aid in it the water will rush out of the cell in order to balance out the solution to solute ration.
In an electrode-electrolyte circuit what do the terms drift current and diffusion current mean?
A drift current is electric charges being moved in the presence of an electric field, and a diffusion current is electric charges being moved by a chemical diffusion gradient (where no electric field exists, but where there is a concentration gradient of chemical species driving the current).
Name and describe the condition that exists when the diffusion of a particular substance is complete?
The condition that exists when the diffusion of a particular substance is complete is called equilibrium. At this point, there is an equal distribution of the substance throughout the system, and there is no net movement of the substance from one area to another.
What exists in aqueous solution an acid or base?
An acid exists in aqueous solution when the concentration of H+ ions is higher than that of OH- ions, resulting in a pH lower than 7. A base exists in aqueous solution when the concentration of OH- ions is higher than that of H+ ions, resulting in a pH higher than 7.
What type of bond exists in HCL?
A polar covalent bond exists in HCl, where the electrons are shared between the hydrogen and chlorine atoms but are not shared equally due to the difference in electronegativity. This results in a partial negative charge on the chlorine atom and a partial positive charge on the hydrogen atom.
What condition exists when you have a high concentration of molecules in one place and a low concentration of moleculse on an adjacent place?
Diffusion gradient
Why is there a diffusion gradient in the tissues?
A diffusion gradient exists in tissues due to differences in concentration of substances. This gradient drives the passive movement of molecules from areas of higher concentration to areas of lower concentration, allowing cells to obtain necessary nutrients and get rid of waste products.
What are the conditions that exists when diffusion of a particular substance is complete?
When diffusion of a particular substance is complete, the concentration of that substance will be equal throughout the entire system. This means there is no longer a concentration gradient for the substance to move along, and equilibrium has been reached. At this point, the substance will continue to move randomly but with no net change in concentration over time.
What condition exists when you have a high concentration of molecules in one place and a low concentration in an adjacent place?
A concentration gradient exists, which drives the movement of molecules from an area of high concentration to an area of low concentration through processes like diffusion or osmosis. This gradient is essential for processes like nutrient uptake by cells or gas exchange in the lungs.
What is the pressure for diffusion that is produced by the concentration gradient?
Osmotic Pressure. It exists anywhere that there is a soluble substance concentration gradient; that is, not only when a membrane separates substance concentrations. See: Brownian Motion.
Is diffusion continue until equilibrium is reached?
Yes, diffusion continues until equilibrium is reached, which is the state where the concentration of particles is uniform throughout a given space. During diffusion, particles move from areas of higher concentration to areas of lower concentration, driven by their kinetic energy. This process continues until the concentration gradient no longer exists, resulting in an equal distribution of particles. At equilibrium, there is no net movement of particles, although individual particles continue to move.
What is difusion and osmosis?
Diffusion: When small uncharged particles go through the phospholipid bilayer, it cost no ATP Osmosis: imagine a solution with a bunch of kool aid in it then you place a cell in the glass with only a little kool aid in it the water will rush out of the cell in order to balance out the solution to solute ration.
What type of transport is faciliated diffusion?
Neither of these require energy. Diffusion occurs naturally when a higher concentration of a substance exists on one side of a membrane than the other; molecules will enter into the area of lesser concentration until there is an equilibrium on both sides. Active transport requires the energy of the cell.
In an electrode-electrolyte circuit what do the terms drift current and diffusion current mean?
A drift current is electric charges being moved in the presence of an electric field, and a diffusion current is electric charges being moved by a chemical diffusion gradient (where no electric field exists, but where there is a concentration gradient of chemical species driving the current).
What is the a major difference between facilitated diffusion and active transport?
Simple diffusion moves molecules from an area of higher concentration to an area of lower concentration without an input of energy. Facilitated diffusion follows the same rules as regular diffusion (higher to lower concentration and no energy input), but uses protein carrier molecules to allow substances that are fat soluble to diffuse through the cell membrane.
What exists across a cell membrane if equilibrium is not reached?
If equilibrium is not reached across a cell membrane, a concentration gradient exists, meaning there is a difference in the concentration of substances (such as ions or molecules) on either side of the membrane. This gradient can drive the movement of substances via passive transport (like diffusion) or may require active transport mechanisms to maintain or restore balance. Additionally, if there is an imbalance in charge or concentration, it can affect the cell's electrical potential and overall function.
Four of the five answers listed are related by energy requirements. Select the exception. a. active transport b. endocytosis c. diffusion d. exocytosis e. sodium-potassium?
c. diffusion is the exception as it does not require energy input from the cell to move substances down their concentration gradient. The other processes listed (active transport, endocytosis, exocytosis, sodium-potassium pump) all require energy in the form of ATP.
