LHS Academic Biology
Mr. Zahm, Rm 507
Name:
Block:
Date:
Passive Transport Practice
- Diffusion, Osmosis, & Facilitated Diffusion
Glossary:
1. PASSIVE TRANSPORT is a method by which small particles move in, out, and within a cell …
without requiring the cell to do work (use energy/ATP).
2.
3.
4.
5.
6.
 Types: diffusion, osmosis, and facilitated diffusion
DIFFUSION is the m_________________ of p_______________ from a_________ of “high
___________________” (where there are a lot) to a___________ of “low ___________________””
(where there are only a little), which means “with the concentration gradient”.
OSMOSIS is the d___________________ of w____________ across a semi-permeable (partly
passable) membrane.
FACILITATED DIFFUSION is the d_________________ of p______________ in or out of a cell
with the assistance of a membrane protein. (This is passive, also!)
CONCENTRATION is the p________________ (%) of ONE type of solute particle in a solution
(like cytoplasm or salt water).
A “Concentration Gradient” is a change in c_____________________, from one place to another.
Three Questions about Diffusion & Osmosis:
1) In the picture below, the arrows show the movement of the solute particles.
A. Which type of Passive Transport is taking place below, diffusion, osmosis or facilitated diffusion?
B. Write “high” and “low” once each where the concentration is high/low.
C. Does the cell have to use energy (ATP) to transport these particles? (Yes/No)
A. _________________________
B. (Write on the sketch)
C. ______
This is a solute particle
Cell membrane
Passive Transport Practice 2015.docx
LHS Academic Biology
Mr. Zahm, Rm 507
2)
Name:
Block:
Date:
A. Which type of Passive Transport is taking place below, diffusion, osmosis or facilitated diffusion?
B. Write “high” and “low” where the concentration of water is high and low.
C. Does the cell have to use energy (ATP) to transport these particles? (Yes/No)
D. Draw an arrow to show which direction the water particles will diffuse – in or out.
A. _________________________
C. ______
B. Write on the sketch
D. Write on sketch.
- Water particles
- Salt particles
Cell Membrane
Extra:
D. Concentration of Water: inside ____________ % outside ____________ %
E. Concentration of Salt: inside ____________ % outside ____________ %
3)
A. Which type of Passive Transport is taking place below?
B. Write “high” and “low” once each where the concentration is high/low.
C. Does the cell have to use energy (ATP) to transport these particles? (Yes/No)
A. ______________________________________ B. Write on the sketch
C. ______
Passive Transport Practice 2015.docx
LHS Academic Biology
Mr. Zahm, Rm 507
Passive Transport Practice 2015.docx
Name:
Block:
Date: