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Facilitated diffusion

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Wize University Biology Textbook > The Plasma Membrane

Passive Transport

4 Activities

checklist
Mark Yourself Question
  1. Grab a piece of paper and try this problem yourself.
  2. When you're done, check the "I have answered this question" box below.
  3. View the solution and report whether you got it right or wrong.
Define facilitated diffusion (do the best you can!)
More Passive Transport Questions:
Which of the following graphs represents the transport of lactose by cells that use both facilitated diffusion and active transport for lactose? The inhibitor added is an ATP inhibitor.
What factors allow a molecule to enter a cell by diffusion? Select all that apply
Practice: Transport
How would each of the following molecules be transported into the cell? (aimple diffusion, facilitated diffusion, primary active transport, or secondary active transport).
1.
2.
Practice: Membrane Transport 3
You are running an experiment in the lab to determine if your bacterial cells take up lactose using active transport, facilitated diffusion, or both. You add an ATP inhibitor to the culture and measure the ratio of lactose inside the cell vs. outside the cell over time. Based on the graph below, which type of transport is used by the cells?
Practice: Membrane Transport 1
By what method would you predict that these molecules would enter the cell?
a) Oxygen:
b) Potassium:
Which of the following is true regarding membrane transport?
Which of the following are accurate statements regarding membrane transport?
i. The entropy of the system decreases during active transport which is why it requires the use of ATP
ii. Passive diffusion functions because of an increase in entropy
How do hydrophobic molecules (such as O2, steroids etc.) pass through phospholipid bilayers?
How is the action of carrier proteins best described?
Voltage gated describes what type of transport?
What type of membrane transport is shown below?
Which of the following requires ATP?
How do inorganic ions pass through a cell membrane?