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What else can I help you with?
Why can't charged molecules pass through the membrane?
Charged molecules cannot pass through the membrane because the membrane is selectively permeable, meaning it only allows certain substances to pass through based on their size and charge. The charged molecules are repelled by the hydrophobic interior of the membrane, which prevents them from crossing.
Why is a plastic bag selectively permeable?
Does not allow matter to pass, but energy (light, heat, etc) is allowed to enter.
What physical property of the dialysis tubing might explain its differential permeability?
Dialysis tubing is an impermeable membrane/containment vessel that is stratified with microscopic holes which restrict certain molecules or particles from diffusing through them. This leads dialysis tubing to serve as a selectively permeable membrane because it selectively prevents certain molecules from crossing the membrane based on the size of the molecules. (Typically water and glucose will diffuse through, whereas starch and potassium iodide will not.
Why is the plasma membrane called a selectively permeable membrane?
The Plasma Membrane is a selectively permeable membrane as it only allows entry and exit of some selected molecules into and out of the Cells. It also prevents movement of some other materials, therefore the plasma membrane is called a selectively permeable membrane.
Which factor prevented the protein molecules from moving out of the cell?
The presence of the cell membrane acts as a physical barrier that prevents protein molecules from moving out of the cell. The cell membrane is selectively permeable, controlling the movement of substances in and out of the cell. Additionally, certain proteins within the cell membrane help to regulate the transport of molecules.
What prevents mixing of vacuole contents with the cytoplasm?
The tonoplast, a membrane surrounding the vacuole, acts as a barrier that prevents the mixing of vacuole contents with the cytoplasm. This membrane is selectively permeable, allowing only certain molecules to pass in and out of the vacuole. Additionally, the acidic nature of the vacuole helps maintain a pH gradient that discourages mixing with the cytoplasm.
Why is the cell membrane said to be selectively permeable?
Because the Cell Must Be Selectively Reactive.If the Cell was not selectively permeable it it would allowed Virus's in, and they could potentially lose essential nutrients because everything would flow in and out of the cell and destroy it
Is plasma membrane premeable?
The plasma membrane is selectively permeable; it allows some substances to pass through but prevents the passage of other substances
What prevents organic molecules from forming their own and remaining intact today?
I dk
What prevents ions and most large molecules from passing through the membrane?
vacuoles
An egg as an osmosis meter?
Osmosis is the process where water passes into our tissues through a semi-permeable membrane. All of our cells are surrounded by a membrane that selectively allows in anything the cell needs but prevents unwanted molecules from entering. An egg also has a membrane surrounding it so we can use it to represent a cell and see how osmosis works.
What is the protective function of the mucus?
it somehow prevents foreign materials to get through the body.
