1. What happens before a cell divides?
1. Please have these
Items on your desk.
Agenda
Science Starters
Sheet
What happens before a cell divides?
What does a sequence of bases in DNA form?
Thursday February 2, Day 2

2. Steps in the activity Place the strawberry in the Ziploc bag.
Gently mush the strawberry. DO NOT hit
the bag.
Add extraction buffer.
Mush for 2 more minutes. DON’T forget to record
the data.
Put the coffee filter over the cup. Pour contents into
the filter. Let sit about 10 minutes.
Carefully squeeze the filter. Observe and record.
Pour liquid into the test tube.
Add the cold alcohol.
Record observations.
Remove DNA with a popsicle stick. Observe and record.
Clean all materials and throw away the Ziploc bag.

3. The illustration is a ‘model’ of the double helix forming part of a DNA molecule
(Slide 14)
DNA

4. Summary and Reflection
Answer the questions on
the back page of the
hand-out.
Summary and Reflection
Rate yourself on your knowledge of DNA. Use
your learning goals in your notebook.
What did you find most interesting about this
activity?
What was the most difficult part of the activity?
If you did this activity again, what would you
do differently.

5. To do list
Strawberry DNA lab