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- 1. Multiple Choice
The idea that Earth's early oceans had organic molecules that became the first life is called.primordial soupbubble hypothesisMiller-Urey Experimentradioactive dating theory - 2. Multiple ChoiceCellular life may have begun with ____________ made of amino acids.macrospheresmicrosporesmicrospheresmacrospores
- 3. Multiple ChoiceMicrospheres had DNA so they were able to pass their characteristics along to their offspring.truefalse
- 4. Multiple Choice___________________ evolved after RNAamino acidsatomsDNAmolecules
- 5. Multiple ChoiceThe first eukaryotic cells are more likely to have evolved from ______________ than eubactria (true bacteria).exocytosisendosymbiosisorganellesArchaebacteria
- 6. Multiple ChoiceThe group __________________ includes many of the bacteria that cause our diseases.PlantaeArchaebacteriaEubacteriaAnimaliae
- 7. Multiple ChoiceThe oldest known fossils of multicellular organisms were found in rocks older than theCambrian periodPrecambrian periodHadeon Era
- 8. Multiple ChoiceWhy do most scientists think the 6th mass extinction is occurring now?Human activity is destroying ecosystemsanimal competition is decreasing species diversityThey don't
- 9. Multiple Choice
When did life probably first appear on Earth?
4.8 billion years ago
3.8 billion years ago
4.8 million years ago
3.8 million years ago
- 10. Multiple Choice
The first simple life was ....?
Animal life
Plant life
Eukaryotic
Prokaryotic
- 11. Multiple Choice
The atmosphere in the first 2 billion years of the history of planet Earth was lacking which gas?
Ammonia
Carbon dioxide
Methane
Oxygen
- 12. Multiple Choice
These photosynthesising bacteria appeared about 2.5 billion years ago. They are called ...?
Archaea bacteria
Spirogyra
Cyanobacteria
Eukaryotes
- 13. Multiple Choice
These photosynthesising bacteria appeared about 2.5 billion years ago and are so important because ...?
They released oxygen into the atmosphere
They removed carbon dioxide from the atmosphere
They could synthesise their own sugar molecules
All of the answers are correct
- 14. Multiple Choice
Eukaryotic cells probably first appeared how long ago?
4.8 billion years ago
3.8 billion years ago
2.7 billion years ago
1.4 billion years ago
- 15. Multiple Choice
The history of planet Earth is subdivided into several eras, marked by the life at the time. Which era contained ONLY prokaryotic forms of life?
Pre-cambrian
Palezoic
Mesozoic
Cenozoic
- 16. Multiple Choice
Which is the era of the dinosaurs?
Pre-cambrian
Paleozoic
Mesozoic
Cenozoic
- 17. Multiple Choice
Which is the era in which we live today?
Pre-cambrian
Paleozoic
Mesozoic
Cenozoic
- 18. Multiple Choice
Most eras and many periods during the history of the planet Earth, came to an end because of ...?
Global warming
A mass extinction event
Ice ages
A rapid evolution of a dominant species of animal
- 19. Multiple Choice
What is/was the cause of the Anthropocene mass extinction event?
Humans
Asteroids
Global warming
Ice age
- 20. Multiple ChoiceThe 8 levels of classification, most broad to most specific.Domain, Genus, Family, Order, Class, Phylum, Kingdom, SpeciesDomain, Species, Kingdom, Genus, Phylum, Family, Class, OrderDomain, Kingdom, Phylum, Class, Order, Family, Genus, SpeciesOrder, Kingdom, Species, Domain, Phylum, Family, Class, Genus
- 21. Multiple ChoiceAccording to this cladogram, sharks are MOST closely related to which organism?AmphibiansRay finned fishCrocodilesBirds
- 22. Multiple ChoiceWhich two orgainsms have hair?Sharks & Ray Finned FishPrimates & RodentsBirds & CrocodilesRabbits & Birds
- 23. Multiple ChoiceWhich kingdoms are prokaryotic?Archaebacteria and AnimaliaEubacteria and ArchaebacteriaFungi and ProtistaPlantae and Eubacteria
- 24. Multiple Choice
One limitation of the Linnaean classification system is that it
organizes organisms into groups.
allows scientists to discuss organisms.
does not use organisms’ common names.
is based on physical characteristics alone.
- 25. Multiple Choice
In classification, a species is defined as
the most general taxon of the classification system.
a group with similar physical characteristics.
the commonly used name for an organism.
a group of organisms that can breed and produce offspring.
- 26. Multiple Choice
In the following cladogram, the hagfish is considered an outgroup because it
shares no derived characters with other groups being studied.
shares specific traits in common with the other species on the cladogram.
is the closest common ancestor to every other species.
has the ability to breed and produce offspring with each other.
- 27. Multiple Choice
The evolutionary history for a group of species which can be shown as a branching tree
Life history
Fossil record
Common ancestry
Phylogeny
- 28. Multiple Choice
Most scientists agree that ____________ should have the "last word" when it comes to figuring out how species are related.
Physical traits
Embryonic development
DNA
Classification
- 29. Multiple ChoiceWhich question were the scientists trying to answer with this experiment?Where do cells come from?How did prokaryotes form cell membranes?How are biomolecules formed?What gave rise to the Eukaryotic cell?
- 30. Multiple ChoiceThe apparatus in the experiment was used to mimic what?ProteinsPresent Earth conditionsEarly Earth conditionsNucleic acids (DNA/RNA)
- 31. Multiple ChoiceMiller/Urey and other scientists have shown that:Life on early Earth required material from spaceCells survived in the primitive atmosphereAmino acids could be produced from inorganic moleculesSimple cells can be produced in a laboratory
- 32. Multiple Choice
Based upon the conditions of the early Earth, which forms of life most likely appeared first? (aerobic-needs Oxygen; anaerobic-does not)
Prokaryotic and aerobic
Prokaryotic and anaerobic
Eukaryotic and aerobic
Eukaryotic and anaerobic
- 33. Multiple Choice
The oxygen gas present in our atmosphere today most likely originated from
the first plant species
decomposition by anaerobic bacteria
aerobic respiration producing oxygen from carbon dioxide
photosynthetic prokaryotes
- 34. Multiple ChoiceA system of naming organisms in which each organism is given a genus and species namebinomial nomenclaturegenus-species namespeciationevolutionary classification
- 35. Multiple ChoiceThe process by which new species developrapid speciationspeciationadaptionderived character
- 36. Multiple Choice
Two or more species evolve together
convergent evolution
coevolution
punctuated equilibrium
adaptive radiation
- 37. Multiple ChoiceCyanobacteria were important in the origin of life on earth because they were able to undergo ________________ and produce ____________________.photosynthesis, oxygenphotosynthesis, nitrogencellular respiration, oxygencellular respiration, ATP
- Answer choicesTagsAnswer choicesTags