Alright. So here we're looking at an example problem that's asking which of the following is not a characteristic of life, and we've got these four potential answer options down below. Because we're looking for the option that is not a characteristic of life, we're looking for the false answer option because it's going to be the one that is not a characteristic of life. Option a says, the structure of an organism is based on a hierarchy of organization. We know that one of the major characteristics of life is that they have organization, and so option a, to say that the structure of an organism is based on a hierarchy of organization, is actually a true statement. This is because it's referring to the organization characteristic. Because it is true, it's not the false answer option that we're looking for, so we can eliminate answer option a.
Moving on to option b, it says the ability to establish a constant internal temperature, despite the fact that the temperatures of the environment are constantly changing. This is referring to the ability to maintain homeostasis. Maintaining homeostasis is definitely a characteristic of life. So this is once again a true answer option, which means that we can eliminate answer option b because it's not the false answer option that we're looking for. Now we're between either option c or option d, and notice option c says, the ability to convert sunlight energy into chemical energy, whereas d says DNA molecule that stores genetic and hereditary information.
Recall that the hereditary information of using DNA is a characteristic shared by all living organisms. All living organisms use a DNA molecule as the hereditary molecule to store hereditary information. So once again, we're saying that option d here is true, again because it's referring to hereditary information and DNA. We can go ahead and eliminate answer option d because it's not the false answer option that we're looking for. This only leaves answer option c here as the false answer option that we're looking for. The ability to convert sunlight into chemical energy is something that some living organisms have, but it is not a characteristic of life shared by all living organisms. For that reason, this is actually the false answer option that we were looking for.
So we can go ahead and mark c as the answer that we were looking for, and that concludes this practice or this example. So I'll see you guys in our next practice problem.