Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Ex Input:
Question: Lactic acid fermentation is common in muscle cells that have run out of what? Answer: oxygen

Ex Output:
Figure 7.14 Lactic acid fermentation is common in muscle cells that have run out of oxygen.

Ex Input:
Question: How do we describe chemical reactions? Answer: chemical equations

Ex Output:
Chemical reactions are described using chemical equations.

Ex Input:
Question: What are the active transport mechanisms by which molecules enter and leave the cell inside vesicles? Answer: endocytosis and exocytosis

Ex Output:
Endocytosis and exocytosis are active transport mechanisms in which large molecules enter and leave the cell inside vesicles.