An electron micrograph of an unknown pathogen reveals several subcellular structures. A student is asked to identify features that would confirm the pathogen is a bacterium rather than a human host cell.
Which of the following groups of structures are present in a typical bacterium but are entirely absent from a healthy human hepatocyte?
Plasmids, murein cell wall, slime capsule
Circular DNA, 70S70\text{S}70S ribosomes, cell-surface membrane
Lysosomes, plasmids, peptidoglycan cell wall
70S70\text{S}70S ribosomes, slime capsule, Golgi apparatus
