Question

based on the endosymbiotic theory, what cell would result from the endosymbiosis of a cell with a cyanobacterium?
a eukaryotic cell that can make its own food
a prokaryotic cell that can make its own food
an aerobic bacterium
an anaerobic bacterium

Explanation:

The endosymbiotic theory posits that eukaryotic cells evolved from symbiotic relationships between different prokaryotic cells. Cyanobacteria are photosynthetic prokaryotes. When a cell undergoes endosymbiosis with a cyanobacterium, the resulting cell is a eukaryotic cell that can perform photosynthesis and make its own food due to the presence of the cyanobacterium - like organelles (chloroplasts in plants). Prokaryotic cells don't result from this endosymbiotic event in the context of the theory's evolution of eukaryotes. Aerobic and anaerobic bacteria are not the result of this specific endosymbiotic event.

Answer:

a eukaryotic cell that can make its own food