Grade 12 Life Sciences Practical Task 1 DNA:
Title: DNA extraction
A grade 12 learner did an experiment to extract DNA from an onion. He/she recorded the experiment in the pictures below. Study the pictures and answer the questions that follow.
Table of Contents
Grade 12 Life Sciences Practical Task 1 DNA: Questions
- Follow the “instructions” as in the picture and perform the investigation. See if you get the same result as the learner. (13)
- What is the aim of the experiment? (2)
- Explain the purpose of each of the following components of the experiment:
- soap solution
- pot of warm water
- filtration
- alcohol
- This learner used meat tenderiser. Suggest a reason for this step. (5)
- Which other materials may be used in place of the onion to produce the DNA? Give a reason for your answer. (2)