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Earth Science Quiz

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Questions and Answers

What is the atmospheric gas that has substantially increased in concentration in the last 200 years?

Oxygen

Carbon dioxide (correct)

Nitrogen

Argon

What is the significance of the Burgess Shales?

Are a rich source of oil and gas

Capture the Great Oxygenation Event

Contain fossils of the first primates

Contain diverse fossils of many multicellular organisms during the Cambrian Explosion (correct)

What led to the development of photosynthetic eukaryotes around 1.8 billion years ago?

Endosymbiosis between Cyanobacteria and alphaproteobacteria

Endosymbiosis between Cyanobacteria and eukaryotes (correct)

Endosymbiosis between Alphaproteobacteria and eukaryotes

Endosymbiosis between Eukaryotes and Archaea

Which group of organisms is primarily responsible for oxygenation of our planet?

Cyanobacteria Signup and view all the answers

What is depicted in the photograph taken by a former Biology 170 student in northwestern Montana?

Fossil stromatolites – layered communities of cyanobacteria Signup and view all the answers

What percentage of all species on Earth are mammals?

0.005% Signup and view all the answers

Which of the following statements about pathogenic microorganisms is correct?

Many diverse lineages of the domain Bacteria have pathogenic members. Signup and view all the answers

What is special about the genome of Prochlorococcus?

It has a tiny genome for a free-living microbe. Signup and view all the answers

Why is DNA a better information storage molecule than RNA?

DNA is more stable than RNA. Signup and view all the answers

What function do gut microbes perform for their host?

They break down organic carbon that we cannot digest. Signup and view all the answers

What is the genomic material of Influenza viruses stored as?

Single-stranded RNA Signup and view all the answers