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Answer: 1: hypertonic
2 -80 millivolts
3 osmosis or osmotic pressure
4 potassium
5. concentration gradient
6 a chemical gradient occurs when more of one molecule is on one side of a membrane, and more of another molecule is on the opposing side. An electrical gradient occurs when more positive or negative ions are on either side of a cell membrane potential, or voltage difference.
7 The combination of a chemical and electrical gradient can result in an electrochemical gradient that drives the movement of ions and molecules across a membrane.
8 an electrochemical membrane can have opposing components gradient.
Explanation:
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- A hypotonic solution occurs when the solute concentration outside of the cell is higher than the solute concentration inside the cell.
- Most cells have an electrical potential difference of between -40 and -70 millivolts.
- Osmotic pressure or flow is a determining force in water movement and causes water to move from areas of high water concentration to low water concentration.
- In most cells, there are more water molecules inside the cell and more sodium molecules outside the cell
- A concentration gradient exists when different concentrations of a substance exist on either side of a membrane.
An electrical gradient occurs when more positive or negative ions are on either side of a cell membrane.
- Hypertonic solutions are the solution where solute concentration outside of the cell is higher than the solute concentration inside the cell.
- osmotic pressure is the force with which a solvent moves across a semipermeable membrane from a higher to a lower concentration.
- the membrane potential is in the range of –40 mV to –70 mV.
- Water concentration inside the cell is high and more solute or salt concentration outside the cells.
- Concentration gradient is the difference between the internal and external sides of a membrane
Thus, the correct fill in the blanks are:
- hypotonic solution
- –70 mV
- Osmotic pressure
- water molecules
- Concentration gradient
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