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What is the term for the movement of a solute across a membrane in the direction of its concentration gradient from high to low concentration?
The term for the movement of a solute across a membrane in the direction of its concentration gradient, from high to low concentration, is called "diffusion." This process does not require energy input and occurs naturally as molecules move to achieve equilibrium. Diffusion is a fundamental concept in Biology and chemistry, influencing various physiological processes.
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Which ions electrical charges oppose the direction of movement that is caused by their concentration gradient?
Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell. Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell.
What is a different concentration between solutions on opposite sides of a semipermeable membrane called?
The difference in concentration between solutions on opposite sides of a semipermeable membrane is called a concentration gradient. This gradient drives the movement of molecules through the membrane, typically from an area of higher concentration to an area of lower concentration, in a process known as diffusion. If the movement occurs in response to this gradient, it can influence various biological and chemical processes.
How does the Concentration gradient of a substance affect the movement of that substance and the expenditure of energy?
A concentration gradient of a substance drives the movement of that substance from an area of high concentration to an area of low concentration. The steeper the concentration gradient, the faster the movement of the substance, requiring less energy to transport it. If the concentration on both sides of the gradient is equal, there is no net movement of the substance.
What is the movement of small molecule across a cell membrane up its concentration gradient called?
eflux
Net movement of water across a cell membrane occurs from what?
The net movement of water across a cell membrane occurs from an area of lower solute concentration to an area of higher solute concentration. This process is driven by the osmotic pressure gradient between the two sides of the membrane.
The net direction that an ion or molecule moves is?
determined by the concentration gradient and electrical gradient across the membrane. If the net movement of ions or molecules is down their concentration gradient and towards the opposite electrical charge, they will move across the membrane.
What determines the direction of net movement across a cellmembrane?
The direction of net movement across a cell membrane is determined by the concentration gradient of a substance, with molecules moving from an area of high concentration to an area of low concentration. Additionally, the permeability of the membrane to the specific molecules also influences their movement. External factors such as temperature and pressure can also impact the direction of movement across the membrane.
Is the movement of molecules across a membrane down the concentration gradient a passive or active process?
The movement of molecules across a membrane down the concentration gradient is a passive process.
How does passive transport move substances across a cell membrane in the direction of their concentration gradient?
Passive transport moves substances across a cell membrane in the direction of their concentration gradient without requiring energy input from the cell. This process relies on the natural movement of molecules from areas of high concentration to areas of low concentration, facilitated by protein channels or carriers in the cell membrane.
Which ions electrical charges oppose the direction of movement that is caused by their concentration gradient?
Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell. Any ion that is positive but has a higher concentration inside the cell or is negative and has a higher concentration outside the cell.
What is a different concentration between solutions on opposite sides of a semipermeable membrane called?
The difference in concentration between solutions on opposite sides of a semipermeable membrane is called a concentration gradient. This gradient drives the movement of molecules through the membrane, typically from an area of higher concentration to an area of lower concentration, in a process known as diffusion. If the movement occurs in response to this gradient, it can influence various biological and chemical processes.
What is the relationship between the electrochemical gradient and the concentration gradient in cellular transport processes?
The electrochemical gradient is a combination of the electrical gradient and the concentration gradient. It influences the movement of ions across cell membranes during cellular transport processes. The concentration gradient refers to the difference in the concentration of ions or molecules inside and outside the cell, while the electrical gradient refers to the difference in charge across the cell membrane. Together, they determine the direction and rate of ion movement in cellular transport processes.
How does the Concentration gradient of a substance affect the movement of that substance and the expenditure of energy?
A concentration gradient of a substance drives the movement of that substance from an area of high concentration to an area of low concentration. The steeper the concentration gradient, the faster the movement of the substance, requiring less energy to transport it. If the concentration on both sides of the gradient is equal, there is no net movement of the substance.
Which term describes the difference in the concentration of a substance across a cells membrane?
concentration gradient
A concentration gradient ceases to exist when?
A concentration gradient ceases to exist when there is an equal distribution of a substance across a space or membrane. This equal distribution results in no net movement of the substance from one area to another, causing the concentration gradient to reach equilibrium.
What will be the direction of net movement in this case?
The direction of net movement will depend on the concentration gradient. Substances will generally move from an area of higher concentration to an area of lower concentration, until equilibrium is reached.
What is the movement of small molecule across a cell membrane up its concentration gradient called?
eflux
