4. A bacterial cell is prokaryotic, while the protist, Euglena, is eukaryotic. Which structure is present in both organisms?*
(10 Points)

There are a couple different possible answers, since there are multiple different structures that are present in both types of cells. So you have to make the choice of what to put.

The structures that prokaryotic and eukaryotic cells have in common are: plasma membrane, ribosomes,  and cytoplasm

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.