_____________ microbes use oxygen in metabolism, while _____________ do not.

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Hey, everyone. Let's take a look at this question together which of the following statements about anaerobic organisms is true. Is it answer choice A that they require oxygen or their metabolic processes? Answer choice B that they cannot survive in environments lacking oxygen. Answer choice C that they have a higher growth rate in the presence of oxygen or answer choice. D none of the above. Let's work this problem out together to try to figure out which of the following statements about anaerobic organisms is a true statement. So in order to solve this question, we have to recall what we have learned about anaerobic organisms to determine which of the following statements about anaerobic organisms is a true statement starting off with answer choice. A which says that anaerobic organisms require oxygen for their metabolic processes. Well, we can immediately identify that answer choice. A is a false statement as it says that those anaerobic organisms require oxygen for their metabolic processes, which we know that anaerobic organisms do not require oxygen as it is those aerobic organisms that require oxygen for their metabolic processes. So answer choice A is a false statement. So it cannot be the correct answer. Next, we have answer choice B which says that they cannot survive in environments lacking oxygen. Well, we know from answer choice A that anaerobic organisms do not require oxygen or their metabolic processes, which also tells us that anaerobic organisms are able to survive in environments that lack oxygen since they do not require it. So answer choice B which says that cannot survive in those environments lacking oxygen is also a false statement. As anaerobic organisms can survive and thrive in those environments lacking oxygen since they do not require it. Therefore, answer choice B is also a false statement. So it cannot be the correct answer. And lastly, we have answer choice C which says that they have a higher growth rate in the presence of oxygen, which we can recall that anaerobic organisms do not require oxygen for their metabolic processes. And therefore they do not have a higher growth rate in the presence of oxygen which makes answer choice C a false statement as well as the growth rate of those anaerobic organisms is not dependent on the presence of oxygen. So answer choice C is also not a true statement. So it cannot be the correct answer which leaves us with only answer choice D as the remaining answer choice. So answer choice D, none of the above is the correct answer. As all of the above answer choices are all false statements. So none of the above answer choices are true. I hope you found this video to be helpful. Thank you and goodbye.

_ microbes use oxygen in metabolism, while _ do not.

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Key Concepts

Aerobic Microbes

Anaerobic Microbes

Metabolic Pathways in Microbes