Strawberry DNA Extraction
In this lab activity, DNA is extracted from strawberries which allows students to see the DNA they isolate. DNA extraction is a fundamental procedure used in many types of experiments. This introductory lesson helps prepare students for more advanced labs that may call for DNA extraction. Strawberries are used because they are accessible and very easy to squish and break down, as they contain cellulase and pectinase. Students also may wish to repeat this experiment with samples of interest, such as different fruit.
In the online version of this lesson, students have the opportunity to perform the lab using common household items and/or watch a video of a student performing the lab and analyze various images of results.
- Explain how to extract DNA from living organisms and the scientific reasoning for using the materials involved.
- Practice reading and following a basic lab protocol.
- Observe plant cells under microscope and identify the cell wall, cell membrane, cytoplasm and nucleus
- The nucleus is surrounded by the nuclear membrane (envelope), which contains DNA molecules
- DNA molecules code for proteins which carry out most of the work of cells
- Review role of organelles in eukaryotic organisms
This lab includes a complete set of curriculum to help provide a deep learning experience for your students. The Lesson Resources* provide context and activities to help students build an understanding of the science behind the lab, and include a Lesson Plan, Lesson Slides that articulate with a Student Guide, Background Reading, and Vocabulary Tool.
*BABEC Lesson Resources are created and intended for use in Google Suite to allow for easy customization and seamless integration into Learning Management Systems. We recommend downloading the resources in Microsoft Office format and immediately uploading them into your Google Drive to view and edit them in their intended format.
The Lab Resources below are designed to ensure a straightforward, smooth lab experience in your classroom, and include a Student Protocol, Inventory Guide, and Preparing the Classroom for the Lab document.
The Lesson Resources* below provide a digital-only substitute for our hands-on lab. They include the same rich learning experience as the traditional lab, with the addition of videos of a student performing the lab and sample results for students to analyze.
*BABEC lesson resources are created and intended for use in Google Suite to allow for easy customization and seamless integration into Learning Management Systems. We recommend downloading the resources in Microsoft Office format and immediately uploading them into your Google Drive to view and edit them in their intended format
Disciplinary Core Ideas:
LS1.A – Structure and Function “All cells contain genetic information in the form of DNA molecules”
Science and Engineering Practices:
Scale, Proportion and Quantity