It's A. Temperature changes modify the enzyme shape, so they no longer fits.
The most observabledifference<span> is the way in which cytokinesis occurs. In </span>plants<span> a new cell wall is fashioned </span>between<span> the new daughter cells, while in </span>animal<span> cells the cell membrane constricts to pinch the parent cell into daughter cells.</span>
The virus is unable to replicate.
Ribosomes synthesize proteins
A metallurgical microscope