Answer Key Strawberry Dna Extraction Lab Worksheet Answers
Are you a science teacher looking for a fun and engaging way to teach your students about DNA extraction? Look no further than the Strawberry DNA Extraction Lab Worksheet! This hands-on activity allows students to extract DNA from strawberries and learn about the structure and function of DNA. In this article, we will provide an answer key for the Strawberry DNA Extraction Lab Worksheet answers, as well as additional information about DNA extraction.
What is DNA?
DNA, or deoxyribonucleic acid, is a molecule that carries genetic information in all living things. DNA is made up of four nucleotide bases: adenine, thymine, cytosine, and guanine. These bases pair up to form the "rungs" of the DNA ladder, which is twisted into a double helix shape. The sequence of these bases determines an organism's genetic traits.
What is DNA extraction?
DNA extraction is the process of isolating DNA from cells. This can be done using a variety of methods, including using enzymes to break down cell membranes and using chemicals to separate DNA from other cellular components. In the Strawberry DNA Extraction Lab, students will use a mixture of dish soap, salt, and rubbing alcohol to extract DNA from strawberries.
Answer Key for Strawberry DNA Extraction Lab Worksheet
1. What is the purpose of the dish soap in the DNA extraction mixture?
Answer: The dish soap helps to break down the cell membranes of the strawberries, releasing the DNA.
2. What is the purpose of the salt in the DNA extraction mixture?
Answer: The salt helps to clump together the DNA, making it easier to see and extract.
3. What is the purpose of the rubbing alcohol in the DNA extraction mixture?
Answer: The rubbing alcohol causes the DNA to precipitate out of the solution, making it visible and easy to extract.
4. What does DNA look like?
Answer: DNA is not visible to the naked eye, but when extracted from strawberries, it appears as a white, stringy substance.
5. What is the structure of DNA?
Answer: DNA is made up of four nucleotide bases (adenine, thymine, cytosine, and guanine) that pair up to form the "rungs" of the DNA ladder. The ladder is twisted into a double helix shape.
6. What is the function of DNA?
Answer: DNA carries the genetic information that determines an organism's traits.
Conclusion
The Strawberry DNA Extraction Lab Worksheet is a great way to teach students about DNA extraction and the structure and function of DNA. By providing an answer key for the worksheet, we hope to make it easier for teachers to use this fun and engaging activity in their classrooms. Remember, DNA extraction is just one of the many ways that scientists study and understand the complex world of genetics.