How DNA Can Be Extracted From Fruit

The video tutorial explains how DNA is present in all living cells and describes a simple method to extract and visualize DNA using common household items. It begins with an introduction to DNA's structure and presence in cells, followed by a step-by-step guide to extracting DNA from fruit. The process involves blending fruit with saltwater, using detergent and enzymes to release DNA, and finally adding cold ethanol to precipitate and visualize the DNA. This hands-on experiment can be conducted in a kitchen, making it accessible for educational purposes.

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

• DNA is extremely narrow and tightly wound around proteins.

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

• DNA is flexible and can be folded multiple times.

• DNA is liquid and can flow into small spaces.

Why is salt used when mashing the fruit in the DNA extraction process?

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

• To make the fruit soup more liquid.

• To enhance the flavor of the fruit.

• To dissolve the fruit completely.

What role does detergent play in the DNA extraction process?

• It neutralizes the enzymes in the solution.

• It colors the DNA for better visibility.

• It acts as a preservative for the DNA.

• It breaks down the cell membranes to release DNA.

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

• Vinegar

• Baking soda

• Pineapple juice

• Sugar

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

• To heat the solution for better reaction.

• To slow down enzymes that could break down DNA.

• To change the color of the DNA.

• To dissolve the DNA completely.