What does it mean when the concentration of molecules is equal on the inside and outside of the cell?
isotonic solution
An isotonic solution is a solution in which the amount of dissolved material is equal both inside and outside of the cell. Water still flows in both directions, but an equal amount enters and leaves the cell.
When the concentration is the same inside and outside the cell this is called?
An isotonic solution has the same concentration of solutes both inside and outside the cell. For example, a cell with the same concentration of salt inside it as in the surrounding water/fluid would be said to be in an isotonic solution.
Is glucose more concentrated inside the cell or outside the cell?
Most cells, including erythrocytes, are exposed to extracellular glucose concentrations that are higher than those inside the cell, so facilitated diffusion results in the net inward transport of glucose.
When the concentration of molecules is equal inside and outside the cell what direction does water move?
Water will move in the direction where there is a high concentration of solute (and hence a lower concentration of water. Salt is a solute, when it is concentrated inside or outside the cell, it will draw the water in its direction.
When the concentration is the same on both sides outside and inside the solution is?
If a cell is placed in an isotonic solution, there will be no net flow of water into or out of the cell, and the cell’s volume will remain stable. If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.
What is the difference between osmolarity and tonicity?
The terms are different because osmolarity takes into account the total concentration of penetrating solutes and non-penetrating solutes, whereas tonicity takes into account the total concentration of non-freely penetrating solutes only.
What is the solution called when its concentration is the same as concentration inside the cell?
Answer: A solution is isotonic when its effective osmole concentration is the same as that of another solution. In biology, the solutions on either side of a cell membrane are isotonic if the concentration of solutes outside the cell is equal to the concentration of solutes inside the cell.
What happens if the concentration of glucose in the water outside of a cell is higher than the concentration inside?
If the concentration of glucose in the water outside of a cell is higher than the concentration inside, Water will tend to leave the cell by osmosis.
How is glucose kept inside the cell against a concentration gradient?
How is glucose kept inside the cell, against a concentration gradient? Glucose is converted to fructose and there are no fructose transporters.
When the concentration of solute inside and outside a cell is the same the cell has reached?
10th grade Biology – 7-3 Cell Boundaries
| A | B |
|---|---|
| when the concentration of the solute is the SAME throughout a system, the system has reached | equilibrium |
| particles tend to move from an area where they are MORE concentrated to an area where they are LESS concentrated, is a process of | diffusion |
When concentration is the same on both sides?
When equilibrium is reached, the concentration on both sides should be equal. However, it is important to know that even at equilibrium, the movement between the two sides still occurs, but the rate of movement is the same.
How does osmolarity and tonicity affect a cell?
Tonicity describes how an extracellular solution can change the volume of a cell by affecting osmosis. A solution with low osmolarity has a greater number of water molecules relative to the number of solute particles; a solution with high osmolarity has fewer water molecules with respect to solute particles.
How does glucose diffuse through the membrane?
Glucose molecule is too large to diffuse simply from the cell membrane instead the diffusion of glucose through cell membrane takes place via facilitated diffusion. Facilitated diffusion is a passive transport mechanism in which carrier proteins shuttle molecules across the cell membrane without using the cell’s energy supplies.
Can glucose cross the membrane without a protein gate?
If glucose tried to cross the membrane without the protein gate, it would take a very long time. The cell membrane is made of a double layer of lipids, called a bilayer. Lipids are molecules with a hydrophilic head and hydrophobic tail.
How is glucose transported from the gut to the bloodstream?
For example, the sugar glucose is transported by active transport from the gut into intestinal epithelial cells, but by facilitated diffusion across the membrane of red blood cells. Why? Consider how different these two environments are.
Why does glucose-6-phosphate not diffuse out of the cell?
Glucose-6-phosphate cannot diffuse back out of cells, which also serves to maintain the concentration gradient for glucose to passively enter cells. Glucose is a six-carbon sugar that is directly metabolized by cells to provide energy. The cells along your small intestine absorb glucose along with other nutrients from the food you eat.