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Bio 200 Test 1 – Poulin CORRECT QUESTIONS & SOLUTIONS(RATED A
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What does evolution mean? - ANSWER Change over time conservation biology - ANSWER The integrated study of ecology, evolutionary biology, physiology, molecular biology, and genetics to sustain biological diversity at all levels protoplanetary disk - ANSWER a large rotating cloud of dust, rocks...

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  • October 10, 2024
  • 21
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bio 200
  • bio 200 test 1 poulin correct questions soluti
  • what does evolution mean answer change over ti
  • conservation biology answer the integrated study

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Bio 200 Test 1 – Poulin CORRECT
QUESTIONS & SOLUTIONS(RATED A)
What does evolution mean? - ANSWER Change over time



conservation biology - ANSWER The integrated study of ecology, evolutionary biology, physiology,
molecular biology, and genetics to sustain biological diversity at all levels



protoplanetary disk - ANSWER a large rotating cloud of dust, rocks, and gas



what did the protoplanetary disk consist of? - ANSWER it was composed of hydrogen and helium, which
composed from the Big Bang



Nuclear fusion of hydrogen and helium led to what? - ANSWER The formation of the sun



what are time scales? - ANSWER the history of the planet



precambrian supereon - ANSWER 4.6 bya - 543 mya



paleozoic era - ANSWER 543 mya - 250 mya



meszoic era - ANSWER 250 mya - 65 mya



cenzoic era - ANSWER 65 mya - now



hadean eon (hell eon) - ANSWER oldest precambrian supereon, no ocean, no oxygen, earth was
bombarded by planetoids, which caused the planet to be fully molten

,late hadeon - ANSWER earth surface cools, but from bombardment we see cracks, these cracks released
steam and gases (volcanoes played a part too) , which formed an atmosphere, then clouds were formed,
which led to rain, which led to oceans



When did the hadean eon end? - ANSWER Between 4.3 and 3.8 bya



unicellular organism - ANSWER A single celled organism



Multicellular organisms - ANSWER Organism made up of many cells



Cyanobacterial mats / stromatolites - ANSWER Community consisting of photosynthetic cyanobacteria,
bacteria and diatoms that also fix nitrogen. They form layers/columns



Bacterial fossils is associated with? - ANSWER Cyanobacterial mats



Archean fossils - ANSWER both representatives of the major branches of the tree of life, the bacteria and
the archea



early multicellular organisms - ANSWER a billion years ago multicellular organisms arises, paleontologists
set the appearance of multicellular organism when they see hard shell life



The Paleozoic Era - ANSWER 543-250 mya, hard shell organisms, trilobites very common, arcaeocyathids,
sees first land plants and animals



What did the Paleozoic era end with? - ANSWER The permian, 96% of all life forms go extinct, 70%
terrestrial vertebrates go extinct, only known mass extinction of insects



The Cambrian explosions - ANSWER the rapid appearance of most major animal phyla, probably not such
a big bang



The Mesozoic Era - ANSWER Age of reptiles, 250-65 mya, mammals first seen 200M years ago

, What did the Mesozoic Era end with? - ANSWER It ended with the K-T extinction



K-T boundary - ANSWER layer of iridium-rich material between rocks of the Cretaceous period and rocks
of the Paleogene period that provides evidence of a meteorite impact



Why was the first life in an RNA world? (3) - ANSWER Has hereditary information



Why was the first life in an RNA world? (4) - ANSWER Has catalytic properties



What are clues to the RNA world? - ANSWER Viroids



How do things become living? - ANSWER We have no idea



Morganucodon watsoni - ANSWER inch long mammal who shared characteristics similar to those of a
weasel.meozoic era



Divine Creation - ANSWER a supreme being created the earth, organisms function the way the divine
creator wants them to, species do not change



Anaximander - ANSWER He believed all organisms came from common ancestors or they had common
descent, he also believed in transmission of species



transmutation of species - ANSWER view that species can change and give rise to new species



common descent - ANSWER principle that all living things have a common ancestor



Carolus Linnaeus (1707-1778) - ANSWER He proposed a classification scheme for life on Earth



bionomial nomenclature - ANSWER a system to specify an organism by its genus and species. every
organism is given a scientific name consisting of two parts: its genus and species names

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