EESA06 Quiz 5.docx

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University of Toronto Scarborough
Environmental Science
Nick Eyles

EESA06 Quiz 5 Page 1 User Celia Duong Submitted 3/10/11 10:07 PM Name Quiz 5: Life on Earth lecture, no chapters in textbook - regarding LISA's guest lecture Status Completed Score 27.5 out of 33 points Time Elapsed 52 minutes, and 10 seconds out of 1 hour Question 1 Chimps and humans split about ____ million years ago. Correct Answer: 6 Question 2 Fossils can be used for absolute age dating only. Correct Answer: False Question 3 How did scientists determine that Tumay walked upright? Correct Answer: the way the eyes pointed when the skull fit on the spinal column Question 4 Life most likely originated around hot spots on the ocean floor. Correct Answer: true Question 5 Please match the following terms with their best definition from the list. Correct Match Metazoans B. The first multicellular eukaryotic organisms Prokaryotes C. Single celled bacteria lacking a nucleus Eukaryotes G. Singular or multicellular bacteria that have a nucleus Protists K. Single celled eukaryotic bacteria with thick, protective walls Achritarchs H. The fossil remains of protists Hyperthermophiles J. Live in very hot waters Chemosynthesis A. A mechanism of using chemicals for energy generation Photosynthesis F. A mechanism of generating energy from sunlight Hypersaline I. Very salty water Chordates E. Having a backbone (or at least a notochord) during some part of their lives Question 6 Early life and the formation of an atmosphere and oceans on Earth may have been prevented by: Correct Answer: the lack of a magnetic field EESA06 Quiz 5 Page 2 Question 7 A trace fossil is one that can be correlated and traced over large distances. Correct Answer: False Question 8 The law of faunal succession means that younger life forms are always found at stratigraphically higher levels in rocks Correct Answer: True Question 9 What brought an end to the dinosaurs? Correct Answer: a meteorite impact at Chixculub (Mexico) Question 10 The _____________ allows geneticists to determine how long ago humans split from a common ancestor. Correct Answer: molecular clock Question 11 Please choose as many of the following as apply. An index fossil is ideally _____. Correct Answers: - geographically widespread - in existence for only a short period of ge
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