Paenibacillus wynnii uses the oxygen produced by cyanobacteria for which cellular process?

The oxygen produced by cyanobacteria is used by Paenibacillus wynnii in respiration. The Latin name paene means almost, which reflects its name "almost bacilli". This endospore-forming bacteria, specifically genus P. larvae is known to cause American foulbrood in honeybees but they are essential in agriculture and horticulture.

In addition, these bacteria can catalyze a wide variety of synthetic reactions ranging from cosmetics to biofuel production for they produce extracellular enzymes like polysaccharide-degrading enzymes and proteases.

The answer is respiration. Paenibacillus wynnii is a facultative bacteria found in soil and other environments. Being facultative, it can survive in both oxygenated or anoxic environments. Therefore, if put together with Cyanobacteria that produces oxygen, Paenibacillus wynnii will use the oxygen in respiration.