Question

3 the extraction buffer assisted in extracting dna from the strawberry by... a breaking down the cell membrane and nuclear membrane b breaking hydrogen bonds between nucleotides c filtering large parts of the strawberry from the dna d separating the dna from the rest of the strawberry

Explanation:

Strawberry DNA extraction buffers typically contain detergents that dissolve lipid bilayers of cell and nuclear membranes, releasing DNA. Option B is incorrect (hydrogen bonds are broken by heat/enzymes, not buffer). Option C is incorrect (filtering is a separate step). Option D is too vague; the buffer's direct role is membrane breakdown.

Answer:

A. breaking down the cell membrane and nuclear membrane