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Licence: In copyright
Credit: 'Origins of Life' (Salk Institute). Source: Wellcome Collection.
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![The following are, in a cryptic form, a summary of questions thus far received. Please expand them. 1. Did metal ions and minerals (clay, etc.) have a role and if so, what. 2. Building up and tearing down of monomers. 3. Fractionation - selection (D vs. L, amino acids, nucleotides, etc.). k. Polysaccarides. 5. Phase-bounded systems as protocells 6. Alternative prebiotic synthesis (C0 2> CO, N 2 , HCN, etc.). 7. How are monomers concentrated. 8. Polymerization. 9. Code. 10. Was the first living system protein and nucleic acid based. 11. Do extra solar planets exist. 12. Planetary S extraplanetary conditions. 13. Does life have to be based on known biomonomers. ]k. Autotrophic vs. heterotrophic conditions. 15. Effect of a changing environment. 16. The rock record - what does it tell us. 17« The diurnal cycle effect. 18. The early atmosphere S hydrosphere 19. What can we infer from extant living systems. 20. What is the minimal living system (energy, monomers, information). 21. Lipids - is there a role.](https://iiif.wellcomecollection.org/image/b18171722_PP_CRI_E_1_27_11_0011.jp2/full/800%2C/0/default.jpg)
