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, the use of detergent and enzymes to release DNA, and the process of making DNA visible by adding cold ethanol. The video demonstrates that DNA extraction can be done at home with simple materials.

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

• DNA is very flexible.

• DNA is extremely narrow and tightly wound around proteins.

• DNA is made of small molecules.

• DNA is compressed by cell pressure.

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

• To enhance the flavor of the mixture.

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

• To dissolve the cell walls completely.

• To make the fruit easier to mash.

What role does detergent play in the DNA extraction process?

• It neutralizes the enzymes in the mixture.

• It colors the DNA for better visibility.

• It breaks down the cell membranes to release DNA.

• It acts as a preservative for the DNA.

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

• Olive oil

• Vinegar

• Pineapple juice

• Baking soda

Why is ice-cold ethanol used in the final step of DNA extraction?

• To slow down enzymes that could break down DNA.

• To add color to the DNA strands.

• To dissolve the DNA completely.

• To warm up the mixture for better results.