Question

question 32
dna extraction is done with:
can not be done
centrifugation
detergent and alcohol
too difficult to explain for a 101 class

Explanation:

In DNA extraction, detergent is used to break open cells (lyse the cell membrane and nuclear membrane), and alcohol (usually cold ethanol or isopropanol) is used to precipitate the DNA as DNA is insoluble in alcohol. Centrifugation is a technique to separate components based on density but is not the main agent for DNA extraction. Saying it's too difficult for a 101 class is incorrect as basic DNA extraction protocols are taught in introductory biology classes. And clearly, DNA extraction can be done.

Answer:

Detergent and alcohol