What type of organisms carry out cellular respiration?

Cellular respiration takes place in almost all living organisms. All animals carry out cellular respiration to produce energy in the form of ATP, from sugars such as glucose. Plants perform photosynthesis to generate their own energy, and get oxygen from the air through the stomata. Plants also carry out dark respiration, which is the process of respiration which oxides reduced organic compounds to carbon dioxide without the presence of light. Fungi such as yeast are also capable of performing cellular respiration. During aerobic respiration, yeasts convert glucose into carbon dioxide and water. When oxygen is not present, yeasts carry out fermentation and convert glucose into carbon dioxide and alcohol. Bacteria also carry out either aerobic or anaerobic respiration. Bacteria undergo aerobic respiration through glycolysis, pyruvate oxidation, the citric acid cycle, and electron transport chain. They carry out anaerobic respiration through glycolysis and fermentation. Protists such as obligate aerobes require oxygen the majority of the time, however they may also require anaerobic respiration. For example, parasitic forms of protists which exist in environments without oxygen (in the sulfide zone of freshwater sediments) require this type of respiration.