AIIMS: Revision Terminology Part 52

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Chemical Evolution

  1. Earliest atmosphere on earth – reducing.

  2. Formation of early molecules.

  3. Formation of simple org molecule.

  4. Formation of large org. molecule.

  5. Formation of complex biomolecule for miller – CH4, NH3, H2, H2o.

  6. Formation of coacervates abiotically synthesis on earth & came together due to intermolecular attraction – could divide & chemical reaction.

  7. Formation of protocells Clusters of nucleoprotein which surrounded org. subs for replication.

  8. 1st organism – heterotrophic, anaerobic, nucleoprotein.

  9. Progenote – single celled common ancestor of archebacteria, eubacteria & eukaryotes.

  10. Excretion – elimination of metabolic waster & undigested food from body toxic – NH3 > area > uric acid.

  11. Ascaris Ex eartherwom – NH3, urea.

  12. Urine – urochrome (from breakdown of Hb)

  13. Faeces – bilirubin + biliverdin

  14. Muscle – creatine phosphate.

  15. Concutrer current mech – overll to conc nace in the fluid & callse water to diffuse out in collecting tubules & concentrate the urine.

  16. Flatworms – Flame cells.

  17. Roundworms – H shaped cells.

  18. Annelida – nephridia.

  19. Arthropods – green gland (crustaceans).

  20. Spiders – Coxal Gland.

  21. Unio – organ of Bojanus.

  22. Cephalochordates – Hatschck’s nephridia.

  23. Ureter – transitional epithelium.

  24. Podocytes – lining of Bowman’s capsule ultrafiltration areas.

  25. Trimethylamine oxide – marine teleost.

Developed by: