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What is the random movement of molecules and ions down their concentration gradient called?
The random movement of molecules and ions down their concentration gradient (meaning from an area of high concentration to an area of low concentration) is called simple diffusion. Simple diffusion is related to the magnitude of driving force, permeability of the membrane, and surface area.
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What term describes the difference in the concentrations of a substance across a cell's membrane?
The term that describes the difference in concentrations of a substance across a cell's membrane is called the concentration gradient. This gradient drives the movement of substances such as ions or molecules across the membrane through processes like diffusion or active transport to achieve equilibrium.
What diffusion is lower concentration to a higher concentration?
This process is called active transport, where cells use energy to move molecules against their concentration gradient, from an area of lower concentration to a higher concentration. This mechanism allows cells to maintain specific intracellular concentrations of certain molecules that are different from their surroundings.
What best determines the direction that carbon dioxide and oxygen molecules move?
The direction in which carbon dioxide and oxygen molecules move is primarily determined by the concentration gradient between the areas of higher and lower concentrations of these gases. Molecules tend to move from areas of high concentration to areas of low concentration through a process called diffusion. Additionally, factors such as temperature, pressure, and the presence of a semi-permeable membrane can also influence the direction of movement.
The movement of water molecules from an area of high concentration to low concentration through a selectively permeable membrane is called what?
This process is called osmosis. It is a type of passive transport where water molecules move across a membrane to balance the concentration of solutes on either side.
What is the difference in concentrations of a substance between two areas called?
This is called a concentration gradient. It represents the difference in the concentrations of a substance between two regions, with molecules naturally moving from high to low concentration areas to reach equilibrium.
The difference in concentration of a substance across space is called a?
The difference in concentration of a substance across space is called a concentration gradient. This gradient drives the movement of molecules from regions of higher concentration to regions of lower concentration through processes like diffusion or active transport.
How does the movement of molecules occur down a concentration gradient?
The movement of molecules down a concentration gradient happens through a process called diffusion. This is when molecules move from an area of high concentration to an area of low concentration, driven by the natural tendency of particles to spread out evenly. This movement continues until the concentration is balanced throughout the system.
What is the term for the movement of molecules from an area of lower concentration to an area of higher concentration?
If it is the movement of molecules then it is diffusion. If it the movement of water then it is osmosis
How do molecules move up a concentration gradient?
Molecules move up a concentration gradient through a process called passive transport. This involves the movement of molecules from an area of low concentration to an area of high concentration, driven by the natural tendency of molecules to spread out and reach equilibrium. This movement can occur through processes such as diffusion or osmosis, where molecules move across a membrane without the need for energy input.
How do molecules move down a concentration gradient?
Molecules move down a concentration gradient through a process called diffusion. This means that molecules naturally move from an area of high concentration to an area of low concentration until they are evenly distributed. This movement occurs due to the random motion of molecules and does not require energy input.
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.
In which type of process do substances move down their concentration gradient across the membrane?
Active transport is a process that removes substances from a cell against the concentration gradient. The molecules move from low concentration to high concentration during this process.
How do cells transport molecules against their concentration gradient?
Cells transport molecules against their concentration gradient through a process called active transport. This process requires energy in the form of ATP to move molecules from an area of low concentration to an area of high concentration. Proteins embedded in the cell membrane, such as pumps and carriers, help facilitate this movement.
Which term describes the difference in the concentration of a substance across a cells membrane?
concentration gradient
What is the process by which molecules move from high concentration region to low concentration region without the presence of membrane?
This process is called simple diffusion. It involves the random movement of molecules from an area of high concentration to an area of low concentration, driven by the concentration gradient. It does not require the presence of a membrane and occurs until equilibrium is reached.
What is the movement of molecules across a membrane against their concentration at the expense of ATP energy called?
Active transport. It requires energy in the form of ATP to move molecules against their concentration gradient.
How do molecules move along a concentration gradient?
Molecules move along a concentration gradient through a process called diffusion, where they naturally flow from areas of high concentration to areas of low concentration until equilibrium is reached.
