History of life on Earth by Brooklyn Jackson https://padlet.com/brooklynmjj/anmfyyy3hsqh questions & answers en-us 2018-03-01 15:54:41 UTC 2018-03-02 16:12:43 UTC hello@padlet.com 1. What is Biogenisis? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236986833 the synthesis of substances by living organisms.]]> 2018-03-01 15:58:52 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236986833 2. What is spontaneous generation? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236987656 the supposed production of living organisms from nonliving matter, as inferred from the apparent appearance of life in some supposedly sterile environments]]> 2018-03-01 15:59:46 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236987656 3. Who is Francesco Redi? What was his contribution to Science? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236988413
Francesco Redi, - Italian physician and poet who demonstrated that the presence of maggots in putrefying meat does not result from spontaneous generation but from eggs laid on the meat by flies
]]> 2018-03-01 16:00:34 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236988413 brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236989141 2018-03-01 16:01:30 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236989141 4. Name the scientist who disproved spontaneous generation. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236989720  Louis Pasteur]]> 2018-03-01 16:02:14 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236989720 5. By using an open-ended goose-necked flask that allowed air to enter, this scientist disproved spontaneous generation for all time. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236990996 Louis Pasteur]]> 2018-03-01 16:03:52 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236990996 6. What is an isotope? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236992879 each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.]]> 2018-03-01 16:06:03 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236992879 7. The unstable isotope of carbon that decays is called what? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236993518 Alpha, beta and gamma

]]> 2018-03-01 16:06:46 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236993518 8. Scientists hypothesize that life on Earth might have occurred in four main stages. List these 4 stages in order. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236995295 1.The abiotic (nonliving) synthesis of small organic molecules, such as amino acids and nucleotides.
2. The joining of these small molecules into macromolecules, including proteins and nucleic acids.
3. The packaging of these molecules into "protobionts", droplets with membranes that maintained an internal chemistry different from that of their surroundings.
4. The origin of self-replicating molecules that eventually made inheritance possible.]]> 2018-03-01 16:09:05 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236995295 9. This Russian scientist was the first to propose a hypothesis for how organic compounds might have formed on Earth. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236996389 Aleksandr Oparin]]> 2018-03-01 16:10:39 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/236996389 10. New evidence indicates that the first organic compounds were probably formed in what location? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455389 The first organic compounds were located in their experiments indicated that in primitive Earth atmosphere.]]> 2018-03-02 15:47:59 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455389 11. These precursors to prokaryotic cells consisted of a collection of molecules surrounded by a membrane. They maintained an internal chemical environment different from that of their surroundings. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455569 Protobionts]]> 2018-03-02 15:48:16 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455569 12. What are the two key properties of life? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455719 Production and Adaption through evolution]]> 2018-03-02 15:48:32 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455719 13. These substances are spherical in shape and are composed of many protein molecules that are organized into a membrane. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455887 A micro-sphere]]> 2018-03-02 15:48:49 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237455887 14. What was most likely the first genetic material? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456058 RNA]]> 2018-03-02 15:49:07 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456058 15. Were the first cells aerobic or anaerobic? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456401 no was no virtual oxygen.]]> 2018-03-02 15:49:38 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456401 16. Were the first cells prokaryotic or eukaryotic? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456640 Eukaryotic ]]> 2018-03-02 15:50:01 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456640 17. Were the first cells autotrophic or heterotrophic? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456818 Heterotrophic]]> 2018-03-02 15:50:19 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237456818 18. Were the first autotrophs chemosynthetic or photosynthetic? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457021 Photosynthesis]]> 2018-03-02 15:50:38 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457021 19. A term for an RNA molecule that can act as an enzyme and has the ability to replicate itself. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457381 Catalyst]]> 2018-03-02 15:51:11 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457381 20. What cells were the first capable of carrying out photosynthesis? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457783 Glycosis]]> 2018-03-02 15:51:47 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457783 21. List three ways that eukaryotes differ from prokaryotes. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457991 Bacteria are an example of prokaryotes. Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle. Prokaryotes include two groups: bacteria and another group called archaea. Having organelles is a big deal for a cell.]]> 2018-03-02 15:52:04 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237457991 22. What is the name of the theory that proposes that chloroplasts and mitochondria might have once been prokaryotic cells? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458200 The endosymbiotic theory]]> 2018-03-02 15:52:21 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458200 23. List two adaptations seen in the true land plants that enabled them to live successfully on land. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458546
  • Plants evolved several from fresh water and green algae 
  • Plants have evolved several adaptions to life on land, including
    • ]]>     2018-03-02 15:52:40 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458546     24. List two adaptations seen in land animals that enabled them to live successfully on land. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458765 Reptiles and terrestrial are the two lands animals that are enabled to live successfully on land.]]> 2018-03-02 15:52:54 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458765 25. The sudden appearance of new species when previously occupied niches are suddenly left vacant by mass extinction. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458883 Adaption Radiation]]> 2018-03-02 15:53:07 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237458883 26. Life on Earth has been influenced by what three large scale processes? brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237459081 Three large processes influenced on li]]> 2018-03-02 15:53:26 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237459081 27. Explain how early RNA molecules would be able to respond to natural selection. brooklynmjj https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237459265 They would be able to respond because each RNA might have competed with a slightly different RNA molecules for nucleotide.]]> 2018-03-02 15:53:42 UTC https://padlet.com/brooklynmjj/anmfyyy3hsqh/wish/237459265