Please answer the following question: Answer the following question given this paragraph: Organisms that are obligate aerobes need oxygen to live. That is, they use oxygen as a terminal electron acceptor while making ATP (see the "Cellular Respiration" concept). Humans are obligate aerobes, and so are Mycobacterium tuberculosis bacteria. M. tuberculosis causes tuberculosis (TB). Obligate aerobes are found only in places with molecular oxygen. Q: What do obligate aerobes need to live? Choices: - blood - acid - dioxide - oxygen A:
A:
oxygen