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There are two basic ways that individual molecules can enter (or leave) a cell.
1. Diffusion. This is the movement of particles from a region of high concentration to a region of low concentration. So if the concentration of the molecule is higher outside the cell it can enter by diffusion. However diffusion can only take place down a concentration gradient ie from a high to a low concentration.
2. Active transport. This is the movement of particles against their concentration gradient (ie from a low to a high concentration), using energy provided by the cell (ie ATP produced by respiration). So if a molecule is at a higher concentration inside the cell it can only be absorbed by active transport.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoIf there is a lower concentration of solvent outside the cell, solvent molecules move from within the cell to the bulk of the solution, causing the cell to shrink
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What is one in which the concentration of dissolved materials in the water outside the cell is lower than the concentration inside the cell?
b.avacado
Movement of sodium ions from a region of lower concentration inside a cell toward a region of higher concentration outside the cell is accomplished by?
active transport
What would happen if the concentration of molecules outside the cell was lower than the inside?
the carbon dioxide will move into the cell due to the concentration of carbon dioxide outside of the cell being higher
When do Hemolysis occurs when a blood cell is placed into?
A hypotonic solution. The concentration of solute inside the cell is greater than that outside the cell and water enters the cell by osmosis. Water travels from an area of higher water concentration (outside the cell) to an area of lower water concentration (inside the cell) and the cell swells.
What happens in a cell transportation lab report?
When a cell membrane is said to be selectively permeable, it means that the cell membrane controls what substances pass in and out through the membrane. This characteristic of cell membranes plays a great role in passive transport. Passive transport is the movement of substances across the cell membrane without any input of energy by the cell. The energy for passive transport comes entirely from kinetic energy that the molecules have. The simplest type of passive transport is diffusion, which is the movement of molecules from an area of high concentration to an area of lower concentration. Diffusion moves down the concentration gradient, which is the difference in the concentration of molecules across a space. Osmosis is a type of diffusion in which water molecules move down the concentration gradient. When the concentration of solute molecules outside the cell is lower than the concentration of solute in the cytosol , the solution outside is hypotonic to the cytosol. If the concentration of solute molecules is higher outside of the cell, the solution outside is said to be hypertonic. The solution outside is isotonic if the concentration is equal on both sides of the cell membrane.
What is one in which the concentration of dissolved materials in the water outside the cell is lower than the concentration inside the cell?
b.avacado
Are lower concentration of water molecules outside the cell normal?
yes!
Lower concentration of solutes outside the cell than inside the cell?
surgar will move into the cell
Movement of sodium ions from a region of lower concentration inside a cell toward a region of higher concentration outside the cell is accomplished by?
active transport
What would happen if the concentration of molecules outside the cell was lower than the inside?
the carbon dioxide will move into the cell due to the concentration of carbon dioxide outside of the cell being higher
When do Hemolysis occurs when a blood cell is placed into?
A hypotonic solution. The concentration of solute inside the cell is greater than that outside the cell and water enters the cell by osmosis. Water travels from an area of higher water concentration (outside the cell) to an area of lower water concentration (inside the cell) and the cell swells.
What kind of environment is described when the concentration of dissolved substances is greater inside the cell or outside?
When greater than the cell it is hypertonic lower it is hypotonic
What are the three types of osmosis?
1.] Isotonic - concentrationg is the same on the outside and inside [dynamic equilibrium] 2.] Hypotonic - concentration of substances lower outside the cell, water flows in, turgor pressure increases, and cell bursts 3.] Hypertonic - concentration of substances higher outside the cell, water flows out and cell shrinks
Is the movement of water to try to balance concentrations?
Osmosis, which is the movement of water across a semi-permeable membrane from where it is in high concentration to where it is in lower concentration. The purpose of osmosis is to equalize the concentration of solutes inside a cell and outside a cell.
What happens in a cell transportation lab report?
When a cell membrane is said to be selectively permeable, it means that the cell membrane controls what substances pass in and out through the membrane. This characteristic of cell membranes plays a great role in passive transport. Passive transport is the movement of substances across the cell membrane without any input of energy by the cell. The energy for passive transport comes entirely from kinetic energy that the molecules have. The simplest type of passive transport is diffusion, which is the movement of molecules from an area of high concentration to an area of lower concentration. Diffusion moves down the concentration gradient, which is the difference in the concentration of molecules across a space. Osmosis is a type of diffusion in which water molecules move down the concentration gradient. When the concentration of solute molecules outside the cell is lower than the concentration of solute in the cytosol , the solution outside is hypotonic to the cytosol. If the concentration of solute molecules is higher outside of the cell, the solution outside is said to be hypertonic. The solution outside is isotonic if the concentration is equal on both sides of the cell membrane.
What causes a concentration gradient?
a difference of concentration in and outside of a cell.
What if the solvent concentration is lower outside the cell?
hypertonic
