How DNA Can Be Extracted From Fruit

The video explains how DNA is present in all living cells and provides a step-by-step guide to extracting DNA using fruit. It covers the preparation of a fruit mixture, breaking down cell walls, and using detergent and enzymes to release DNA. Finally, it demonstrates how to make DNA visible by adding cold ethanol, allowing viewers to see and collect DNA strands.

What is the primary reason DNA can fit inside a tiny cell?

• DNA is liquid and can flow into small spaces.

• DNA is made of small molecules that can be compressed.

• DNA is flexible and can be stretched.

• DNA is extremely narrow and tightly wound around proteins.

Why is salt added when mashing the fruit during DNA extraction?

• To enhance the flavor of the fruit.

• To make the fruit soup more liquid.

• To change the color of the fruit.

• To help the DNA clump together in the final stage.

What role does detergent play in the DNA extraction process?

• It helps in cooling down the mixture.

• It acts as a preservative for the DNA.

• It breaks down the cell membranes to release DNA.

• It colors the DNA for better visibility.

Which of the following can be used as a source of protease enzymes in the DNA extraction process?

• Olive oil

• Baking soda

• Vinegar

• Pineapple juice

Why is ice cold ethanol used in the DNA extraction process?

• To dissolve the DNA completely.

• To slow down enzymes that break down DNA.

• To heat the mixture for better reaction.

• To change the color of the DNA.