WorksheetsStrawberry DNA Extraction Pre-Lab Quiz
Total questions: 15
Worksheet time: 8mins
All lab accidents, no matter how small, should be reported immediately to –
Your lab partner
The closest lab group
Your teacher
The custodian
In the laboratory, long hair should be –
cut short.
held away from the experiment with one hand.
always neatly groomed.
tied back or kept entirely out of the way.
_______should be left in the locker (or backpack in our case) before entering the lab.
Personal belongings
Cell phone
Jewelry
Food
All of these Items
Following instructions in the lab is important because_.
It could be on the test
The teacher might ask you a question
Your lab partner might get lost
It creates a safe and productive environment
A person has cut themselves. What should they do?
Tell their lab partner
Tell the school nurse
Tell the Instructor
Don't tell anyone, it's just a little cut.
For a safe work environment you should do this
Eat and drink in the lab
Leave dirty glassware lying around
work by yourself
Clean up your work area when finished
What should be done with backpacks in the lab or classroom?
Behind or under the desk
Left in the aisles
worn on your back
Put on your lab table
Conduct yourself in a responsible manner means _.
Go to other stations to talk with other students
Throwing paper wads at other class members
Staying with your group and focused on the lab
Staring out the window while your partner does the work
At the beginning of a lab, what do you do FIRST?
read all directions
wash your hands
gather your materials
get the fire extinguisher
According to your Pre-Lab write up in your notebook from last class, what are some of the materials you need for today's lab?
Water bottle, alcohol, cup, strawberry in bag, beaker, soap, salt, buffer, funnel
Paper towels, funnel, test tube, detergent, kiwiberry in bag, buffer, coffee filter
Graduated cylinder, rubbing alcohol, coffee filter, strawberry in bag, buffer, funnel
Beaker, melon in bag, tissue paper, soap, salt, funnel, graduated cylinder, buffer
Show your completed Pre-Lab write up (purpose, pre-lab questions, materials, and procedures) in your notebook to Ms. Yamamoto in order to be able to get credit for this question.
SHOWED IT. All good.
DID NOT DO IT. Going to write it now.
STARTED, BUT DID NOT FINISH. Going to finish it now.
What is the extraction buffer made of and used for? (Hint: Read the Background info on lab handout)
Salt: break apart proteins that holds DNA
Soap: dissolve cell wall and nucleus membrane
Salt: dissolve cell wall and nucleus membrane
Soap: break apart proteins that holds DNA
Salt: dissolves proteins that holds the nucleus
Soap: break apart cell wall chains
Salt: dissolve ribosomes and proteins
Soap: break apart DNA into chunks
What is isopropanol and what is it used for in this lab?
Isopropanol is ethanol, the kind of alcohol you drink. It is used for smelling in the lab.
Isopropanol is salt. It is used as a buffer in the lab.
Isopropanol is rubbing alcohol. It is used to pull DNA out of the strawberry mix, to be able to see it.
Isopropanol is rubbing alcohol. It is used as a buffer in the lab, to be able to see the DNA.
Why is a coffee filter used in the lab?
Filtering strains all the big cellular junk out of the mix
Filtering strains all the DNA out of the mix
Filtering adds cellular junk into the mix
Filtering adds DNA into the mix
