DNA:lab assessment 3

• what are some potential contaminations in DNA extraction experiments?


  contaminants on the sample
• what types of samples can DNA be extracted from?

  blood, saliva, hair, skin
• what are 4 nitrogenous bases found in DNA?

  Adenine, Thymine, Guanine, Cytosine
• why is ethanol used in DNA extraction?

  it helps in the precipitation of DNA
• what are components of nucleotides?

  Phosphate, sugar, nitrogenous base
• where is DNA found in a plant cell?

  Nucleus
• what is the main purpose of DNA extraction?

  Analysis
• what instrument is used to separate DNA fragments based on size?

  centrifuge
• What is the purpose of a negative control in a DNA extraction experiment?

  to check for contamination from other sources
• what would indicate successful DNA extraction?

  a fluffy white precipitate
• What is the order of the plant cell that we have to go through in order to get to the DNA in the nucleus?

  plasma membrane, cytoplasm, endoplasmic reticulum, Golgi apparatu, and nucleus