Question: Imagine You Are The Chief Biologist At NASA When Perseverance Ill Returns From Its Mission To Earth-like Exoplanet Proxima Centauri B With Actual Living Cells. You Examine The Cells In A Variety Of Ways And Find That They Have What Look Like Organelles, But Very Different From Those In Earth Species. Based On Their Appearance, You Have Named Them Cheese …

Question: Imagine You Are The Chief Biologist At NASA When Perseverance Ill Returns From Its Mission To Earth-like Exoplanet Proxima Centauri B With Actual Living Cells. You Examine The Cells In A Variety Of Ways And Find That They Have What Look Like Organelles, But Very Different From Those In Earth Species. Based On Their Appearance, You Have Named Them Cheese …

Imagine you are the chief biologist at NASA when Perseverance Ill returns from its mission to Earth-like exoplanet Proxima Ce

Show transcribed image text

Transcribed Image Text from this Question

Imagine you are the chief biologist at NASA when Perseverance Ill returns from its mission to Earth-like exoplanet Proxima Centauri b with actual living cells. You examine the cells in a variety of ways and find that they have what look like organelles, but very different from those in Earth species. Based on their appearance, you have named them cheese hats, kidney beans, and Drake. The cells secrete a gelatinous substance that you name “PC goo” and determine that it is comprised of polysaccharides containing the monosaccharides L-xylose and L-arabinose. Curious about how these alien cells synthesize PC goo prior to secretion, you perform a Pulse-Chase experiment using radioactively-labeled L- xylose. The resulting data are plotted in the graph below. 100 cheese hats kidney beans % of silver grains Drake — medium (extracellular) 60 0 20 40 Time after chase (min.) A conclusion that may reasonably be drawn from this data is that: PC goo is synthesized in Drake. PC goo is secreted into the medium constitutively. Kidney beans are the 3rd organelle that PC goo is transported to after it is synthesized. Cheese hats are the 2nd organelle that PC goo is transported to after it is synthesized.