Which of the following statements is true?
(A)Archaea and bacteri...

Question

Which of the following statements is true?
(A)Archaea and bacteria have identical membrane lipids.
(B)The cell walls of archaea lack peptidoglycan.
(C)Prokaryotes have low levels of genetic diversity.
(D)No archaea are capable of using CO2 to oxidize H2, releasing methane.

Accepted Answer

Welcome back. Let's look at our next question which one of the following statements is not true. And as we look over our answer choices, we see their questions about archaea and bacteria. So let's recall thinking back to our condom videos um in the three domain system we've got bacteria arcadia and then you carry outs so that can help us kind of hopefully trigger our memory about the characteristics of bacteria and archaea. So let's start with choice A both archaea and bacteria are pro carry outs. Well this is a true statement we see here the you carry outs are separate domain in our three domain system, bacteria and archaea both being pro carry outs. So that is true and therefore choice A cannot be our correct answer. Choice B. Says R. K. A. Have a cell wall with peptidoglycan. Well this is not correct. Um bacteria have cell cell walls containing peptic like counts. Arcadia though they do have a rigid cell wall surrounding them. It doesn't contain peptic like can instead it has proteins, Glycoprotein Xyz and policy aka rides. So that's something that distinguishes arcadia from bacteria. So Choice B is not true. So that will be our correct answer here. But let's just look over our remaining two answers. Choice. E says archaea are often found in harsh habitats and that is true. Um Sometimes they're called extremophiles because they're found in very extreme conditions. So super very high salinity. Salt lakes uh in hot springs extremely high temperatures. Um They can use many very diverse energy sources even including hydrogen gas or heavy metals that allow them to survive in these very, very extreme environments. So that is true. So Choice C is not a correct answer. And finally, Choice D both archaea and bacteria lack a nucleus. Yes. Since they are pro carry outs, that is one of the characteristics of PRO creates. They lack a nucleus, so that is a true statement and not a correct answer. So again, our correct answer here, Arcadia have a cell wall with peptidoglycan is not true. So that's our correct answer. Choice B. See you in the next video.

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