Question

how does the combination of salt, soap, and alcohol work together to extract dna?
soap breaks membranes, and salt and alcohol help dna clump together.
salt warms dna, soap makes it slippery, and alcohol shrinks it.
salt dissolves dna, soap cleans it, and alcohol colors it.
salt changes dna color, soap mixes it, and alcohol heats it.

Explanation:

Soap (a detergent) disrupts cell and nuclear membranes (lipid - based structures). Salt (e.g., sodium chloride) neutralizes the negative charges on DNA phosphate groups, reducing repulsion between DNA strands. Alcohol (usually cold ethanol or isopropanol) causes DNA to precipitate (clump together) as it is less soluble in alcohol than in the aqueous solution.

Answer:

Soap breaks membranes, and salt and alcohol help DNA clump together.