Specialised cells and structure-function relationships
Science · Year 8
Name: ______________________Date: ____________
Specialised cells have structures that help them perform particular functions. Their shape, surface area and internal features are not accidental: each feature supports a job in the organism. Comparing cells reveals the relationship between biological structure and function.
Example
A red blood cell has a flexible biconcave shape that increases surface area for gas exchange and helps it squeeze through narrow capillaries.
Key terms
Specialised cell:
A cell adapted to perform a particular function.
Structure:
The shape or arrangement of parts.
Function:
The job performed by a cell, tissue or organ.
Questions
1. Which statement best captures specialised cells and structure-function relationships?
The structures of specialised cells help them perform particular functions efficiently.
All cells have the same shape because they all perform the same job.
The pattern can only be explained by guessing.
The topic has no observable evidence.
2. Which term means "A cell adapted to perform a particular function."?
Specialised cell
Structure
Function
Variable
3. Which term means "The shape or arrangement of parts."?
Structure
Specialised cell
Function
Conclusion
4. Which term means "The job performed by a cell, tissue or organ."?
Function
Specialised cell
Structure
Prediction
5. Which observation task is most relevant to this topic?
Compare images of a nerve cell, red blood cell and root hair cell, recording one distinctive feature of each.
Copy the topic title without looking at an example.
Choose a result before making observations.
Ignore details that do not match a first guess.
6. Which model would best represent the key process or relationship?
Draw one specialised cell and use arrows to link each labelled feature to its function.
A decorative drawing with no labels or connection to evidence.
A list of unrelated facts.
A model that deliberately contradicts every observation.
7. Which investigation is focused most directly on the scientific idea?
Use cell images to test whether cells with different functions also show different shapes or structures.
Change many uncontrolled factors and record nothing.
Ask only for opinions and treat them as measurements.
Repeat a memorised answer without testing it.
8. Which evidence best supports the lesson explanation?
Root hair cells have long extensions that increase surface area for absorbing water and minerals from soil.
All cells have the same shape because they all perform the same job.
One preferred answer with no observation.
A claim that cannot be checked in any way.
9. Which task applies the science in a new context?
Predict how a damaged structural feature could reduce a specialised cell's performance.
Write the heading again without explaining it.
Ignore the system and choose randomly.
Assume the same answer fits every situation.
10. Which response best corrects the misconception in this topic?
The structures of specialised cells help them perform particular functions efficiently.
All cells have the same shape because they all perform the same job.
Both statements must be equally correct.
Evidence cannot help decide between explanations.
11. What makes a scientific observation useful?
It records relevant details without changing them to fit an expectation.
It includes only details that support a preferred answer.
It replaces measurements with guesses.
It hides the conditions under which it was made.
12. Why should a scientific model include its limitations?
Models simplify reality, so users need to know what the representation leaves out.
A limitation proves the model has no value.
Models are exact copies and never omit anything.
Limitations should be hidden so a model looks certain.
13. What makes a comparative investigation fair?
Change or compare the intended factor while keeping other relevant conditions consistent.
Change every condition at the same time.
Measure only the result that looks best.
Decide the conclusion before collecting data.
14. Why repeat measurements or use several samples?
To reveal variation and reduce the influence of chance or one unusual result.
To guarantee a preferred conclusion.
To make units unnecessary.
To remove the need for a clear method.
15. What is the best response to an anomalous result?
Record it, check the method and investigate whether it is error or meaningful variation.
Delete it automatically.
Delete all other results instead.
Assume it proves the whole topic wrong.
16. Which conclusion is scientifically responsible?
One that answers the question, uses the evidence and states important limits.
One that claims more than the data show.
One that ignores conflicting evidence.
One based only on the expected answer.
17. What would make the claim about specialised cells and structure-function relationships stronger?
Several relevant, repeatable evidence lines that agree with the explanation.
A larger heading and no new evidence.
Removing results that are inconvenient.
Relying on a single uncheckable opinion.
18. What should happen if reliable new evidence conflicts with a model?
The model should be reviewed and revised or replaced if needed.
The evidence should always be hidden.
The original model must never change.
Scientists should stop asking questions.
19. How should safety and ethics shape an investigation?
Risks, people, living things and environments should be considered before the method is used.
Safety matters only after data collection.
Any method is acceptable if it is fast.
Ethics has no place in science.
20. What makes science communication trustworthy?
Clear methods, accurate terms, relevant evidence and acknowledgement of uncertainty.
Certainty without evidence.
Leaving out how results were obtained.
Using dramatic language instead of data.
21. What is the strongest overall outcome from studying specialised cells and structure-function relationships?
Use observations, models, investigations and evidence to explain and apply this idea.
Memorise the title without using it.
Avoid testing explanations.
Treat every first idea as permanently correct.
Answer key (parent copy)
1. The structures of specialised cells help them perform particular functions efficiently.
2. Specialised cell
3. Structure
4. Function
5. Compare images of a nerve cell, red blood cell and root hair cell, recording one distinctive feature of each.
6. Draw one specialised cell and use arrows to link each labelled feature to its function.
7. Use cell images to test whether cells with different functions also show different shapes or structures.
8. Root hair cells have long extensions that increase surface area for absorbing water and minerals from soil.
9. Predict how a damaged structural feature could reduce a specialised cell's performance.
10. The structures of specialised cells help them perform particular functions efficiently.
11. It records relevant details without changing them to fit an expectation.
12. Models simplify reality, so users need to know what the representation leaves out.
13. Change or compare the intended factor while keeping other relevant conditions consistent.
14. To reveal variation and reduce the influence of chance or one unusual result.
15. Record it, check the method and investigate whether it is error or meaningful variation.
16. One that answers the question, uses the evidence and states important limits.
17. Several relevant, repeatable evidence lines that agree with the explanation.
18. The model should be reviewed and revised or replaced if needed.
19. Risks, people, living things and environments should be considered before the method is used.
20. Clear methods, accurate terms, relevant evidence and acknowledgement of uncertainty.
21. Use observations, models, investigations and evidence to explain and apply this idea.