Strawbz & Concentration
Quiz by Urooj Ahmed
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6 questions
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- Q1Why is soap added to the strawberries before adding the rubbing alcohol?Soap helps to dissolve the cell membranesSoap and strawberries smell goodSoap helps to clean the DNA from impuritiessoap releases the DNA strands by breaking up protein chains that hold nucleic acids together.20s
- Q2Each cell has _______ copies of the genome giving the a lot of DNA per celleightfivesixthree20s
- Q3What factor did Janeeta & Urooj not change for the second experiment?Foam collected on top of liquidAmount of rubbing alcoholTime to let mixture sitAge of strawberries20s
- Q4What concentrations did Janeeta and Urooj conduct their second experiments with?70% & 50%35% and 90%90% & 45%70% & 35%20s
- Q5Why is rubbing alcohol added to the solution?Rubbing alcohol settles to the bottom, causing the DNA to rise to the topRubbing alcohol smells bad so the DNA tries to escapeRubbing alcohol causes the DNA to precipitate.Rubbing alcohol is stronger than DNA20s
- Q6What factor did Janeeta & Urooj not change for the second experiment?Time to let mixture sitAge of strawberriesAmount of rubbing alcoholFoam collected on top of liquid20s