Strawberry DNA Extraction Lab - Amped Up Learning - Free Printable

It looks like you've uploaded a worksheet related to a strawberry DNA extraction lab experiment. The goal is to extract and observe DNA from strawberries, then analyze the investigation using scientific method components: Independent Variable (I.V.), Dependent Variable (D.V.), Control Variable (C.V.), and draw a conclusion.

Let’s walk through each section of the worksheet and fill it in logically based on typical procedures for this lab.

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🔬 Observations Part 2:

This section asks you to draw what you would see under different microscope lenses when viewing strawberry DNA.

Even though you can't draw here, I’ll describe what should be observed:

- Low Power Lens (e.g., 10x):
You'll see a general view of the DNA fibers as clumps or strands, possibly scattered across the slide. They may appear as white, stringy blobs.

- Medium Power Lens (e.g., 40x):
More detail visible—individual fibers become clearer, showing thin thread-like structures.

- High Power Lens (e.g., 100x):
Very detailed view; individual DNA strands may appear as fine threads or fibers. However, due to their size and thickness, they might still look like tangled lines.

> ✔ Magnifications (Typical values):
> - Low Power Lens: 10X
> - Medium Power Lens: 40X
> - High Power Lens: 100X

*(Note: These depend on the microscope used, but these are standard values.)*

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🧪 Identify the Parts of the Investigation

This part requires identifying the variables in the experiment.

Since the image says "Object: Strawberry DNA" and describes extracting DNA and viewing it under a microscope, we assume this is a basic DNA extraction lab where students extract DNA from strawberries and examine it.

But there's no explicit mention of changing conditions — so likely, this is a demonstration rather than a formal experiment with multiple trials. However, if we interpret it as an investigation into how well DNA can be visualized at different magnifications, we can assign variables accordingly.

#### Possible Interpretation:
The independent variable could be the magnification level used to view the DNA.

#### So, fill in:

- Independent Variable (I.V.) – What you tested:
➤ Magnification level (Low, Medium, High)

- Dependent Variable (D.V.) – What you measured/observed:
➤ Clarity and visibility of DNA fibers (e.g., how clearly the DNA strands can be seen)

- Control Variable (C.V.) – What you kept the same:
➤ Type of sample (strawberry DNA), preparation method, slide type, lighting, etc.

> ✔ Example:
> - I.V.: Magnification level
> - D.V.: Visibility and structure of DNA fibers
> - C.V.: Source of DNA (strawberries), extraction method, microscope settings (except magnification), amount of DNA used

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✔ Conclusion:

Now, write a conclusion based on your observations.

> Conclusion:
> - The DNA extracted from the strawberry was visible under all three magnifications, but became increasingly detailed as the magnification increased. At low power, the DNA appeared as clumps of white fibers. At medium power, individual strands were distinguishable. At high power, the fine details of the DNA fibers were more apparent, confirming that higher magnification improves resolution and visibility of DNA strands.
>
> - Hypothesis supported?
> If the hypothesis was “Higher magnification allows better visualization of DNA,” then yes, the hypothesis is supported because the DNA became clearer and more defined at higher magnifications.

> ⚠️ Note: If no specific hypothesis was stated, you can infer one from the procedure.

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📝 Final Answer Summary:

#### Observations Part 2:
- Low Power Lens: Draw clumped, stringy white fibers (10X)
- Medium Power Lens: Draw thinner, separate strands (40X)
- High Power Lens: Draw fine, detailed threads (100X)

#### Variables:
- I.V. (Independent Variable): Magnification level
- D.V. (Dependent Variable): Clarity and visibility of DNA fibers
- C.V. (Control Variable): Type of organism (strawberry), extraction method, slide preparation

#### Conclusion:
- DNA was successfully extracted and observed under the microscope.
- Higher magnification revealed more detail in the DNA fibers.
- Hypothesis (that increasing magnification improves DNA visibility) is supported by the observations.

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Let me know if you'd like help drawing the diagrams or writing a full lab report!