Movement across the Cell Membrane

1
Movement across the Cell Membrane

• Section 7-3

2
Cell Membrane
3
Passive Transport

• Movement across the cell membrane that takes no
  energy to be done.

4
Diffusion

• Movement of substances from an area of high
  concentration to low concentration.

5
Concentration

• Solute vs. Solvent
• Water 93 Solvent
• Sugar 7 Solute
• We have a 7 sugar solution.

6
Example of Sugar in Water

• Inside the Cell
• 7 Glucose
• ________________________
• Outside the Cell
• 3 Glucose

7
Osmosis

• Movement of water across the cell membrane.

8
Example with Water

• Inside the Cell
• 98 water
• ______________________
• Outside the Cell
• 96 water

9
Different Solutions

• Hypertonic
• The solution has a higher concentration of solute
  when compared to another solution.
• Hypotonic
• The solution has a lower concentration of solute
  when compared to another solution.
• Isotonic
• The solutions have the same concentration of
  solute.

10
Isotonic Solution

• Inside the Cell
• 93 Water-7 Salt
• ______________________
• Outside the Cell
• 93 Water-7 Salt

11
Hypertonic vs. Hypotonic

• Inside the Cell
• 92 Water-8 Salt
• ______________________
• Outside the Cell
• 95 Water-5 Salt

12
Hypertonic vs. Hypotonic

• Inside the Cell
• 98 Water-2 Salt
• _____________________
• Outside the Cell
• 94 Water-6 Salt