Unraveling DNA Structure Through Fruit Extraction

The video explains that humans share 50% of their DNA with bananas, highlighting the universality of DNA in living cells. It provides a step-by-step guide to extracting DNA from fruit using common household items, making it visible with ethanol. The video concludes with a call to action for viewers to engage with the content.

What percentage of DNA do humans share with bananas?

• 75%

• 50%

• 25%

• 10%

How long is the DNA contained in each human cell?

• 3 meters

• 4 meters

• 1 meter

• 2 meters

Why is DNA able to fit inside a tiny cell?

• It is broken into small pieces.

• It is liquid at room temperature.

• It is extremely narrow and tightly wound.

• It is very wide and flat.

Which fruit is recommended for extracting DNA due to its high DNA content?

• Orange

• Strawberry

• Banana

• Apple

What is the purpose of adding salt when mashing the fruit?

• To change the color of the mixture

• To make the mixture more acidic

• To help DNA clump together

• To sweeten the mixture

What role does detergent play in the DNA extraction process?

• It breaks down cell membranes

• It makes the DNA glow

• It colors the DNA

• It dissolves the DNA

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

• Olive oil

• Pineapple juice

• Vinegar

• Baking soda

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

• To dissolve the DNA

• To slow down enzyme activity

• To change the color of the DNA

• To heat the mixture

What happens to DNA when ethanol is added?

• It changes color

• It precipitates out as cloudy strings

• It dissolves completely

• It becomes invisible

How can you collect the precipitated DNA from the mixture?

• By evaporating the liquid

• By winding it around a wooden stick

• By using a magnet

• By filtering it through paper