Question

The Movement of Molecules
¿usion of Oxygen and Carbon Dioxide:
Directions: Oxygen and Carbon Dioxide passively diffuse between the capillaries and air sacs in your lungs. Remember, molecules always move with the concentration gradient during passive transport (in this case diffusion)- from high concentration to low concentration. Predict which direction each molecule will travel in the:
[CO. Wil
Environment
1. 2 02
14 COz
2. 13 02
6 CO,
3. 2 02
10 CO,
Cell
13 02
6 COz
202
14 COz
8 02
10 COz
O, Wil
Sugar Molecules and the Diffusion of Water (Osmosis)
'The solute sugar cannot passively diffuse through the plasma membrane. In this case, only the water will travel through the membrane. This type of diffusion is called osmosis. Water will always move with the concentration gradient during passive transport- from high concentration to low concentration. Prediot which direction the water will travel in the following situations:
Describe the Solution in the
Water Will
1 Cell
Davironment
Enviroument (hypo or hypertonic)
4. 2 sugar
14 water
5.
8 sugar
6 water
6. 5 sugar
8 sugar
6 water
2 sugar
14 water
2 sugar
10 water
4 water
7. The diffusion of water across a membrane is called
8.
to pass?
What property of the plasma membrane prevents sugar from passing freely, but allows weter, 02 ,COz
9. What would happen to the cells of a freshwater fish placed in saltwater?
10. How would a pleat cell and an animal cell respond differently when placed in a hypotonic solution?
Explain.

Answer 1

The Movement of Molecules
¿usion of Oxygen and Carbon Dioxide:
Directions: Oxygen and Carbon Dioxide passively diffuse between the capillaries and air sacs in your lungs. Remember, molecules always move with the concentration gradient during passive transport (in this case diffusion)- from high concentration to low concentration. Predict which direction each molecule will travel in the:
[
Environment:
1. 2 02
14 CO2
2. 13 02
6 CO2
3. 2 02
10 CO,2
Cell:
13 o2
6 CO2
2o2
14 COz\2
8 o2
10 CO2
O2 will:
Co2 will: