You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what are the 2 types of cellular respiration?" whose answer is anaerobic metabolism.
Each document should contain about 30 words, and these documents should contain useful information.

Query: types of cellular respiration
Useful Output:

Doc 1: Types of Cellular Respiration · Aerobic respiration · Fermentation · Alcoholic fermentation · Lactic acid fermentation · Propionic acid
Doc 2: There are two main types of cellular respiration—aerobic respiration and anaerobic respiration. Aerobic respiration is a specific type of
Doc 3: There are three main steps of cellular respiration: glycolysis, the citric acid cycle, and oxidative phosphorylation. Glycolysis takes place in
Doc 4: The overall process, however, can be distilled into three main metabolic stages or steps: glycolysis, the tricarboxylic acid cycle (TCA cycle),
Doc 5: The two types of cellular respiration are aerobic and anaerobic respiration. Aerobic respiration occurs in the presence of oxygen to convert