How do cells function?

Passive Transport

Outcome

By the end of the lesson you will explore the function of diffusion and osmosis, two types of passive transport.

Explain
Diffusion and osmosis are both forms of passive transport; transport across the membrane which does not require the input of energy.

Passive transport

Learning Tasks

Explore

Do all substances to pass across the plasma membrane with the same ease or do some require help?

Come up with a list of factors that might affect how a substance travels across the plasma membrane.

Share your thoughts in a class discussion and decide on which information is correct.

Complete one of the following activities recording all data in your log book

Observing Osmosis in Gummy Bears

Complete Edrolo Chapter 3B questions

If you have completed the task above have a go at the following questions on this sheet

HOW DOES CYSTIC FIBROSIS WORK?

Use the image and video and answer the questions below:

Which two organs does cystic fibrosis (CF) affect?
What is the name of the gene involved in this disorder?
Which ions are transported through the CFTR membrane protein?
What happens to the mucus when these ions are added? What type of membrane transport is this an example of?
Using the words diffusion and concentration gradient, why is water attracted to the mucus when the ions are added?
What happens to mucus accumulation in those with CF?
Summarise what happens to the lungs in later childhood in those with CF.
Identify two ways CF is diagnosed.
Why do babies with CF 'taste salty

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