History of Life by Ethan18 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l Made with love en-us 2018-03-02 14:56:13 UTC 2018-03-06 14:56:11 UTC hello@padlet.com 1.) What is Biogenisis? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237421657 A.)Biogenesis is the production of new living organisms or organelles.]]> 2018-03-02 14:58:18 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237421657 2.) What is spontaneous generation? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237422423 A.) The supposed production of living organisms from nonliving matter]]> 2018-03-02 14:59:38 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237422423 3.) Who is Francesco Redi? What was his contribution to Science? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237423203 A.) Francesco Redi was an Italian naturalist, physician, and poet. He disproved the theory of spontaneous generation.]]> 2018-03-02 15:01:11 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237423203 4.) Name the scientist who disproved spontaneous generation. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237425380 A.) Francesco Redi]]> 2018-03-02 15:04:58 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237425380 5.) By using an open-ended goose-necked flask that allowed air to enter, this scientist disproved spontaneous generation for all time. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237426764 A.) Francesco Redi]]> 2018-03-02 15:07:19 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237426764 6.) What is an isotope? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237428024 A.) each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei.]]> 2018-03-02 15:09:14 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237428024 7.) The unstable isotope of carbon that decays is called what? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237429026 A.) Carbon-11 or 11C]]> 2018-03-02 15:10:37 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237429026 9.) This Russian scientist was the first to propose a hypothesis for how organic compounds might have formed on Earth. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237431940 A.) Aleksandr Oparin]]> 2018-03-02 15:14:06 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237431940 10.)New evidence indicates that the first organic compounds were probably formed in what location? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237433377 A.) inorganic molecules with “building blocks” like amino acids forming first and then combining to make complex polymers.]]> 2018-03-02 15:15:41 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237433377 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. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237435893 A.) Protobionts ]]> 2018-03-02 15:19:06 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237435893 12.) What are the two key properties of life? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237437704 A.) reproduction and growth]]> 2018-03-02 15:21:51 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237437704 13.) These substances are spherical in shape and are composed of many protein molecules that are organized into a membrane. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237439204 A.) Microsphere]]> 2018-03-02 15:23:41 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/237439204 15.)What was most likely the first genetic material? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238115491 A.)It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.]]> 2018-03-05 15:00:47 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238115491 8.)Scientists hypothesize that life on Earth might have occurred in four main stages. List these 4 stages in order. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238119418 A.)The abiotic (nonliving) synthesis of small organic molecules, such as amino acids and nitrogenous basesThe joining of these small molecules into macromolecules, such as proteins and nucleic acidsThe packaging of these molecules into protocells , droplets with membranes that maintained an internal chemistry different from that of their surroundings The origin of self-replicating molecules that eventually made inheritance possible]]> 2018-03-05 15:06:17 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238119418 16.)Were the first cells prokaryotic or eukaryotic? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238121645 A.) Eukaryotic]]> 2018-03-05 15:09:25 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238121645 17.)Were the first cells autotrophic or heterotrophic? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238121951 A.) Autotrophic]]> 2018-03-05 15:09:52 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238121951 18.)Were the first autotrophs chemosynthetic or photosynthetic? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238123165 A.) Chemosynthetic]]> 2018-03-05 15:11:34 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238123165 14.)Were the first cells aerobic or anaerobic? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238124754 A.) anaerobic]]> 2018-03-05 15:13:37 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238124754 19.)A term for an RNA molecule that can act as an enzyme and has the ability to replicate itself. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238128022 A.) RNA World]]> 2018-03-05 15:18:14 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238128022 20.)What cells were the first capable of carrying out photosynthesis? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238128916 A.) cyanobacteria]]> 2018-03-05 15:19:34 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238128916 21.)List three ways that eukaryotes differ from prokaryotes. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238129846 A.) 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.]]> 2018-03-05 15:20:46 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238129846 22.)What is the name of the theory that proposes that chloroplasts and mitochondria might have once been prokaryotic cells? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238130607 A.) The endosymbiotic theory ]]> 2018-03-05 15:21:49 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238130607 23.)List two adaptations seen in the true land plants that enabled them to live successfully on land. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238131929 A.)Plants evolved from freshwater green algae. Also plants have evolved several adaptations to life on land, including embryo retention, a cuticle, stomata, and vascular tissue.]]> 2018-03-05 15:23:48 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238131929 24.)List two adaptations seen in land animals that enabled them to live successfully on land. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238134141 A.)Living on land means reptiles can't rely on absorbing oxygen through their skin like amphibians. All reptiles have lungs they use for breathing -- even those who live most of their lives near or in water, such as crocodiles, must surface to breathe. Lungs allow reptiles to venture far away from aquatic environments]]> 2018-03-05 15:26:41 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238134141 25.)The sudden appearance of new species when previously occupied niches are suddenly left vacant by mass extinction. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238134623 A.) Adaptive Radiation]]> 2018-03-05 15:27:20 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238134623 26.)Life on Earth has been influenced by what three large scale processes? ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238135284 A.) Gradualism, catastrophism, and uniformatarianism]]> 2018-03-05 15:28:07 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238135284 27.)Explain how early RNA molecules would be able to respond to natural selection. ethanscrivner03 https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238135398 A.) Each RNA might have competed with a slightly different RNA molecules for nucleotides. An RNA molecule that was more successful in getting nucleotides would have an advantage on to the new RNA molecules it created by replicating]]> 2018-03-05 15:28:17 UTC https://padlet.com/ethanscrivner03/3wmq0qhmhw4l/wish/238135398