Strawberry DNA Extraction Lab

Why do we squish the strawberry well for a few minutes?

• to break the nuclear membrane
• to break the cell walls
• to dissolve the nuclear  membrane
• to isolate the DNA from the nucleus

Tags

NGSS.HS-LS1-4

Why do we add detergent or soap to the squished strawberries?

• to break up the cell walls
• to dissolve the nuclear membrane
• to clean the strawberry
• to isolate the DNA

Tags

NGSS.MS-LS1-1

Why do we add alcohol to the solution of detergent and strawberries?

• To break up the cell wall
• To destroy the nuclear membrane
  
• To isolate the DNA which is repelled by alcohol
• To isolate the DNA, which dissolves in alcohol
  

Tags

NGSS.MS-PS1-2

What layers must be breached to access the DNA?

• cell membrane, nuclear membrane  and cell wall
• Cell Wall only
• mitochondria
• ribosomes

Tags

NGSS.MS-LS1-1

How long should you smash the strawberry mixture the first time?

• 1 minute
• 2 minutes
• 3 minutes
• 4 minutes

What is in your extraction fluid?

• Salt and Water

• Salt, Soap, and Water

• Meat Tenderizer, Salt, Water

• Meat Tenderizer, Water

Why is it important to add the alcohol slowly?

• So that there are two distinct layers.

• Because it is a dangerous substance.

• So that the DNA has time to form into a strand.

• So that the DNA can float up to the top of the extraction layer.

How much cold alcohol should you add to your mixture? About...

• 4 ml

• 12 ml

• 3 ml

• 20 ml

What did you use to take your DNA out of the test tube?

• Tooth Pick

• Paper Clip

• Finger

• Tape