Question

the study of which structure was instrumental in the formulation of the modern cell theory?
○ plant cell
○ animal cell
○ cell membrane
○ dna molecule

Explanation:

The modern cell theory has key tenets about cells being the basic unit of life, and the study of DNA (deoxyribonucleic acid) molecule was crucial. The discovery of DNA's role in heredity and how genetic information is stored and passed on within cells helped refine and formulate modern cell theory, as it explained how cells reproduce and pass on traits. Plant and animal cells were studied earlier in cell theory development, and the cell membrane is about cell structure/transport, not as instrumental in modern cell theory's formulation related to genetic and molecular aspects as DNA.

Answer:

DNA molecule