The Miller-Urey experiment showed that molecules like amino acids can form abiotically. However, the experiment has been criticized for using what are now believed to be incorrect environmental conditions. Scientists have since repeated the experiment using conditions that are thought to be more like the conditions where life first evolved and achieved the same results. What conditions did scientists likely try to replicate in the lab to model the abiotic synthesis of the first biological molecules?

Alkaline hydrothermal vents in the ocean.

The Miller-Urey experiment showed that molecules like amino acids can form abiotically. However, the experiment has been criticized for using what are now believed to be incorrect environmental conditions. Scientists have since repeated the experiment using conditions that are thought to be more like the conditions where life first evolved and achieved the same results. What conditions did scientists likely try to replicate in the lab to model the abiotic synthesis of the first biological molecules?

Alright. This question talks all about the Miller Urey experiment and bunch of information you don't really need to know. What it's really asking here at the end is what do we think the conditions were on earth where the first biological molecules were made. Right? That's really the question. And we said that we now think that that was likely in alkaline hydrothermal vents in the ocean, or some people think maybe sort of near volcanoes. There's the right chemistry there for it to happen. And lookie loo looking down option b says alkaline hydrothermal vents in the ocean. Alright. So that's my answer. Now these other options here, we have a neutral chemistry at the edges of melting glaciers. We never talked about that, so that ain't it. Next, we have sea dry acidic conditions with abundant silica. Never talked about silica, so that ain't it. And then finally, we have tidal pools with abundant lightning activity. Right now that sort of more closely, matches the Miller Urie scenario, this sort of primary primordial soup. But again, that's what we know probably isn't correct now. So now what do we think it was? Probably alkaline hydrothermal vents in the ocean or maybe some places sort of near volcanoes. Alright. That's my answer.