Shared Structures Across Microorganisms

Steps:

• Bacteria contain cell walls, plasma membranes, ribosomes, cytoplasm, and genetic material (DNA).
• Fungi, as eukaryotic cells, have cell walls (chitin-based), membranes, ribosomes, cytoplasm, and DNA in a nucleus.
• Viruses consist of genetic material (DNA or RNA) enclosed in a protein capsid, lacking cellular structures.
• Rows 1 and 4 likely depict genetic material and proteins, present in all three as core components.

Why D is correct:

• Rows 1 and 4 identify nucleic acids and protein structures, essential to bacteria (DNA and enzymes), fungi (DNA and proteins), and viruses (genome and capsid) per basic microbiology definitions.

Why the others are wrong:

• A includes rows 2 and 3, likely cellular features like cytoplasm absent in viruses.
• B pairs row 2 (possibly cell wall) with 4, but cell walls are not in viruses.
• C limits to row 3, missing another shared structure like proteins.

Final answer: D