1. 4.1 Cell Biology
Lesson 11

2. Which way will the water move in this example?
What would happen if the holes in the membrane were made bigger?

3. Baseline (flightpath D): Know that nutrients
can be taken into cells against their concentration gradient by
a process known as active transport.
Further (flightpath C): Describe a situation in which active transport is required and explain why diffusion cannot be used.
Challenge (flightpath B&A): Explain the mechanism of active transport including its reliance on respiration and the link between the rate of respiration and the rate of active transport.

4. Where is the concentration of mineral ions highest?
Which way would the mineral
ions naturally diffuse? Into or
out of the cell?

5. Exam prep Ask for help now if you need it!
Remember you need to be able to apply your
Knowledge in an exam situation!
If you struggle to answer this question now,
how will you find it in two years time when
you sit your exams?
Ask for help now if you need it!

6. Exam prep Ask for help now if you need it!
Remember you need to be able to apply your
Knowledge in an exam situation!
If you struggled to answer this question now,
how will you find it in two years time when
you sit your exams?
Ask for help now if you need it!

7. Exam prep Ask for help now if you need it!
Remember you need to be able to apply your
Knowledge in an exam situation!
If you struggle to answer this question now,
how will you find it in two years time when
you sit your exams?
Ask for help now if you need it!