Lesson 5 of 5 · Cells
Experiment⭐ 30 XP🌿 Wild JungleSpecialised Cells
Specialised Cells.
🎯 Your mission
Run the experiment. Find out what really happens.
⚡ The twist
What the body does in one minute is wilder than any cartoon.
Mind = Blown
🦠 You have more bacterial cells in your body than human cells.
Make a hypothesis first
Guess: how does the body solve this problem?
What You'll Learn
Cells change shape to do a job. A red blood cell loses its nucleus to carry more haemoglobin, a root hair cell grows a long projection to increase absorbing surface, and a nerve cell stretches to carry signals over distance.
Key Words
Tap a word to see its definition.
Materials Needed
- cell diagram cards
- notebook
- coloured pencils
Safety First
- Mop up spills straight away so nobody slips, and keep liquids away from sockets.
Steps
Read the explanation above and note the two key terms before you start.
Given six labelled cell diagrams, match each to its job and write the one structural feature that makes it suited. Then sketch a cell you would design to absorb as much water as possible.
Record what actually happened, including anything that did not match what you expected.
Write a conclusion that answers the question this lesson opened with, and state your uncertainty.
Check Your Understanding
Question 1
1 of 2A root hair cell's long projection increases its:
Where you see this in real life
Your own body is doing this thousands of times every second.
Stretch Challenge
Try this in real life this week.
Find one thing about your body that's different from a friend's. Wonder why.
For the dinner table
“Tell me something you noticed about your own body today.”
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Specialised Cells
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