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A cell membrane is relatively impermeable to substances that are?
Wiki User
∙ 13y ago
water-soluble molecules such as amino acids, sugars, protiens, nucleic acids, and various ions
Wiki User
∙ 13y ago
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Is cell wall an impermeable membrane?
No, the cell wall is easily permeable and allows most substances to enter or leave without any resistance
What controls which substances can move in and out of a cell?
The cell membrane regulates the movement of substances in and out of the cell.How does it do this? The phospholipid bilayer is impermeable to most substances, allowing across only small, uncharged molecules such as those of oxygen, carbon dioxide, and water. The only way for other substances to cross the membrane is via transport proteins (channel and carrier proteins). These are selective, and therefore control what enters and what leaves the cell.
All transport through the cell membrane can be classified as?
permeable or impermeable
What only allows certain substances in and out of a cell?
The permeability of the cell membrane controls which substances may pass in or out of the cell.
The part of the cell that is in most direct contact with the environment is the?
The cell membrane, which surrounds the cell and is responsible for which molecules are allowed to diffuse into or out of the cell and which molecules are impermeable to the membrane
What would happen to a cell if it membrane became impermeable to most substances?
It would die because of a lack of materials inside the cell
What would happen to a cell if it's membrane became impermeable to most substances?
It would die because of a lack of materials inside the cell
Is cell wall an impermeable membrane?
No, the cell wall is easily permeable and allows most substances to enter or leave without any resistance
What controls which substances can move in and out of a cell?
The cell membrane regulates the movement of substances in and out of the cell.How does it do this? The phospholipid bilayer is impermeable to most substances, allowing across only small, uncharged molecules such as those of oxygen, carbon dioxide, and water. The only way for other substances to cross the membrane is via transport proteins (channel and carrier proteins). These are selective, and therefore control what enters and what leaves the cell.
What part of the body that contain impermeable membrane?
cell
When does the cell membrane become impermeable?
nothing can pass through.
What organelle is part of selectively permeable?
It is based on the structure of the cell membrane, which has proteins and lipids in it that make some substances impermeable to the membrane, often based on slight electrical charges and sometimes by size of the molecule or other chemical properties. Some substances require an enzyme or hormone to cross the barrier of the cell membrane, such as binding sites on cell membranes that will not allow glucose into the cell unless insulin binds with the sites, which forms a chemical bridge to allow glucose molecules to pass through the cell membrane into the cell. Without the insulin, the cell membrane is impermeable to glucose.
All transport through the cell membrane can be classified as?
permeable or impermeable
What does it mean when you say a cell membrane is impermeable?
nothing can pass through it
What is a description of the cell membrane?
The cell membrane lets substances in and out of the cell.
What only allows certain substances in and out of a cell?
The permeability of the cell membrane controls which substances may pass in or out of the cell.
The part of the cell that is in most direct contact with the environment is the?
The cell membrane, which surrounds the cell and is responsible for which molecules are allowed to diffuse into or out of the cell and which molecules are impermeable to the membrane
