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DNA Quiz Multiple Choice (1pt each) Directions: Read each question carefully and select the answer you feel best fits. Record your answer in the space provided. 1. The nitrogenous base Adenine can pair with _____. a. Adenine b. Cytosine c. Guanine d. Thymine 2. DNA strands run _____ in relation to each other. a. antiparallel b. parallel c ...
Lab Practice: Extracting DNA from a Banana. Introduction: Within every living organism, most cells contain a complete set of DNA instructions. The information in DNA tells our bodies how to develop, grow, and work. It also controls many of the features that make an organism unique.
With a few simple household items, you can isolate the DNA of bananas in your kitchen. In doing so, you follow the same principles as the biological researchers when they isolate DNA in the laboratory.
STUDENT WORKSHEET. OBJECTIVES. Observe DNA. Demonstrate that living things contain DNA. Demonstrate that DNA is enclosed inside cells i.e. cells must be broken open to extract DNA. QUESTIONS. Is the DNA collected from the peas all the same? How about the wheatgerm? Cheek cells? Explain your answers.
It is important that you understand the steps in the extraction procedure and why each step was necessary. Each step in the procedure aided in isolating the DNA from other cellular materials.
These include: 1) the identification of the owner of a DNA sample left at a crime scene; 2) paternity analysis; 3) the comparison of small amounts of ancient DNA with modern organisms; and 4) determining the sequence of nucleotides in a specific region.
The document describes a laboratory activity to extract DNA from onions. A solution of salt, dishwashing liquid and water is blended with chopped onions and heated to break open cells and release DNA.
