Cellular Resp question

Hello,

I know that if glycolysis can occur with or without oxygen. There are two types of cell resp, anaerobic and aerobic. So if aerobic means that oxygen is available after glycolysis to proceed to the further steps of substrate and oxidative level phosphorylation and the oxygen will be the final electron accept, does anaerobic mean that (after glycolysis) if oxygen is not available it will still go through the krebs and ETC and chemiosis BUT (instead of oxygen) have a different electronegative element as the final electron acceptor? Or would it mean that it will go to fermentation? I'm confused with this fork in the road.

All organisms can ferment, and some fermentation is always occurring, even in the presence of oxygen. If oxygen is not available, glycolysis and the TCA cycle will still run, but only 4 ATP will be produced for each molecule of glucose. If the cell has the ability to use a different electronegative element (eg sulfur) as the final electron acceptor in oxidative phosphorylation, than this will occur and the cell will get 36-38 ATP for every glucose.
Yes, there is anaerobic respiration, as with sulfur reducing bacteria.

The anaerobic respiration is the oldest method of cellular respiration. This type of respiration primarily works by fermentation, which is also known as glycolysis. During anaerobic respiration carbohydrates are partly oxidized and chemical energy is released without the requirement of oxygen. This form of respiration is very primitive and had started from the time or period when oxygen was missing in our atmosphere.