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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 25||FULL COMPLETE||LATEST
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ESTUDYTEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION
|| CHAPTERS 25||FULL COMPLETE||LATEST
1) What is macroevolution?
a) Evolution of individual organisms
b) The broad pattern of evolution above the species level
c) Changes that happen quickly
d) Changes in a single generation
**Answer**: b) The broad pattern of evolution above the species level
2) What are some products of macroevolution?
a) The emergence of terrestrial vertebrates and the origin of key adaptations
b) The extinction of all species
c) The increase of aerobic organisms
d) The decrease in biodiversity
**Answer**: a) The emergence of terrestrial vertebrates and the origin of key adaptations
3) What conditions on early Earth made life possible?
a) Plenty of oxygen and water
b) Chemical and physical processes that led to simple cells
c) The presence of complex organisms
d) The absence of carbon dioxide
**Answer**: b) Chemical and physical processes that led to simple cells
4) What were the stages that led to the origin of life on Earth?
a) Formation of continents, climate changes, and animal evolution
,ESTUDY
b) 1) Formation of organic molecules 2) Joining molecules into macromolecules 3) Creating protocells
4) Origin of self-replicating molecules
c) Extinction events, mass migration, and environmental changes
d) None of the above
**Answer**: b) 1) Formation of organic molecules 2) Joining molecules into macromolecules 3)
Creating protocells 4) Origin of self-replicating molecules
5) When did Earth develop, and what was its atmosphere like?
a) 5 billion years ago with plenty of oxygen
b) 5 billion years ago with no oxygen and no aerobic organisms
c) 3 billion years ago with many complex life forms
d) 1 billion years ago with diverse ecosystems
**Answer**: b) 5 billion years ago with no oxygen and no aerobic organisms
6) What did A.I. Oparin and B.S. Haldane theorize about the early atmosphere?
a) It was full of oxygen.
b) It was a reducing environment suitable for life.
c) It had only methane.
d) It contained only inert gases.
**Answer**: b) It was a reducing environment suitable for life.
7) What did Stanley Miller and Harold Urey accomplish?
a) They discovered fossils.
b) They developed an experiment showing amino acids can form from inorganic materials.
c) They created life in a lab.
d) They studied dinosaurs.
, ESTUDY
**Answer**: b) They developed an experiment showing amino acids can form from inorganic
materials.
8) What do "hot vent" studies suggest about the origin of life?
a) Life began on land.
b) Organisms formed around hot vents in the ocean.
c) Life did not exist in extreme environments.
d) All life forms are the same.
**Answer**: b) Organisms formed around hot vents in the ocean.
9) What is one type of hydrothermal vent?
a) Freshwater spring
b) Black smokers
c) Ice caps
d) Coral reefs
**Answer**: b) Black smokers
10) What are the properties of protocells?
a) They cannot replicate.
b) They have a membrane structure and may show properties of life.
c) They are made only of DNA.
d) They are not capable of metabolism.
**Answer**: b) They have a membrane structure and may show properties of life.
11) What is believed to be the first genetic material?
a) DNA
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