Q: Hypoxia is a condition of the reduced supply of what?


Read this paragraph and choose the correct option from the provided answers:

Figure 10.14 The role of normal p53 is to monitor DNA and the supply of oxygen (hypoxia is a condition of reduced oxygen supply). If damage is detected, p53 triggers repair mechanisms. If repairs are unsuccessful, p53 signals apoptosis. A cell with an abnormal p53 protein cannot repair damaged DNA and thus cannot signal apoptosis. Cells with abnormal p53 can become cancerous. (credit: modification of work by Thierry Soussi).

 Choices:

- methane

- food

- nitrogen

- oxygen


A:
oxygen