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Explain the results you obtained Include the concentration differences and membrane pore size in your discussion?
The results showed higher concentrations of solute on one side of the membrane compared to the other, indicating a concentration difference. The size of the membrane pores likely influenced the movement of solutes, with smaller pores restricting the passage of larger molecules. This led to selective permeability, allowing only certain molecules to pass through based on their size and concentration gradient.
What is active transport permeable membrane?
"Active" in this context means that energy is required. A substance will flow in a certain direction, through diffusion, without having to provide additional energy. To force the substance in the opposite direction would require energy; the cell has to be "active" to achieve this, and this requires energy.
How does water water move in out of living cells?
Water moves into and out of living cells through the process of osmosis. Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a semi-permeable membrane. This helps maintain proper hydration and nutrient balance within the cell.
What is a membrane that only allows certain materials to pass through?
A membrane that permits the passage of only certain molecules is called a semi-permeable membrane. In its simplest form, this separation process is based on molecular size. Smaller molecules pass through and larger ones are retained. In most biochemical processes, a concentration gradient drives the movement of molecules through the membrane.
How does active transport differ from the process of diffusion across a membrane?
Diffusion is the process in which a certain substance achieves equal concentrations in a specific area. Diffusion across a membrane means that the substance is equally distributed between both sides of the membrane, assuming the substance can pass through that membrane (the membrane is permeable to the substance).Active transport is just that, active. It requires energy because it is usually moving substances to a place where they would not naturally move or increases the rate of their disbursing. Active transport can move molecules against a concentration gradient, whereas diffusion cannot.Simply, active transport means that energy is needed to transport the object/molecule while diffusion is a naturally occurring process dependent on the concentration gradients between the membrane.
Explain the results you obtained Include the concentration differences and membrane pore size in your discussion?
The results showed higher concentrations of solute on one side of the membrane compared to the other, indicating a concentration difference. The size of the membrane pores likely influenced the movement of solutes, with smaller pores restricting the passage of larger molecules. This led to selective permeability, allowing only certain molecules to pass through based on their size and concentration gradient.
How is the cell membrane involed in diffusion and osmosis?
The cell membrane is selectively permeable, allowing certain substances to pass through via diffusion or osmosis. In diffusion, molecules move from an area of high concentration to low concentration directly through the membrane. In osmosis, water moves through the membrane from an area of low solute concentration to an area of high solute concentration.
What is diffusion and how does it relate to plasma membrane?
Diffusion is simply the movement of one molecule from an area of high concentration to low concentration. It is semi related to the plasma membrane because plasma membrane does allow diffusion, to an extent. Plasma membrane is semipermeable and only allows certain things to diffuse in or diffuse out.
How does active transport enable the movement of molecules against their concentration gradient?
Active transport enables the movement of molecules against their concentration gradient by using energy from ATP to pump the molecules across the cell membrane. This process allows the cell to maintain a higher concentration of certain molecules inside the cell compared to outside, which is necessary for various cellular functions.
What is osmosis diffusion?
(WATER CELLS ONLY)Water cells move from a higher concentration gradient (more water cells) to a lower concentration gradient (less water cells) through a partially permeable membrane (allows certain substances in and out) and goes with the concentration gradient (high -> low)
How does diffusion occur through a semipermeable membrane?
Diffusion through a semipermeable membrane occurs when molecules move from an area of high concentration to an area of low concentration, passing through the membrane. This process is driven by the natural tendency of molecules to spread out and reach equilibrium. The semipermeable membrane allows only certain molecules to pass through based on their size and charge, regulating the movement of substances across the membrane.
Diffusion of solvent particles across a semipermeable membrane?
Solvent particles will move from an area of high concentration to low concentration across a semipermeable membrane until equilibrium is reached. This process is known as osmosis and is driven by the natural tendency of molecules to move from areas of high to low concentration to equalize the concentration gradient.
What is the only substance that can carry out osmosis?
Water is the only substance that can carry out osmosis. It moves across a semipermeable membrane from an area of higher concentration to an area of lower concentration in order to equalize solute concentration on both sides.
What is active transport permeable membrane?
"Active" in this context means that energy is required. A substance will flow in a certain direction, through diffusion, without having to provide additional energy. To force the substance in the opposite direction would require energy; the cell has to be "active" to achieve this, and this requires energy.
How does water water move in out of living cells?
Water moves into and out of living cells through the process of osmosis. Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a semi-permeable membrane. This helps maintain proper hydration and nutrient balance within the cell.
Describe the process by which an animal cell maintains differences in concentration of certain ions inside and outside the cell?
An animal cell maintains differences in ion concentration inside and outside the cell through active transport mechanisms such as the sodium-potassium pump. This pump uses energy to move ions against their concentration gradients, creating an imbalance. Additionally, ion channels and transporters in the cell membrane selectively allow specific ions to move in and out of the cell, further contributing to maintaining concentration differences.
Why is cholesterol important in the cell membrane?
Cholesterol is important in the cell membrane because it helps maintain the membrane's structure and fluidity. It also plays a role in regulating the permeability of the membrane, allowing certain molecules to pass through while blocking others. Overall, cholesterol helps the cell membrane function properly and efficiently.
