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The Origin Of Life, Prokaryotes, And Protists
Test Description: Review game for Chapters 26
Instructions: Answer all questions to get your test result.
1) The correct order of the geologic eras, from most ancient to most recent, is _____.
A
Paleozoic, Mesozoic, Cenozoic
B
Paleozoic, Mesozoic, Cenozoic, Proterozoic
C
Proterozoic, Mesozoic, Cenozoic, Paleozoic
D
Paleozoic, Cenozoic, Mesozoic
2) Fossils that can be used to establish relative dates are most likely to be found in _____.
A
igneous rock
B
glacial till
C
the continental shelves
D
sedimentary rock
3) A type of ecological relationship called _____ involves one organism living at the expense of another organism.
A
Commensalism
B
Symbiosis
C
Parasitism
D
Mutualism
4) The fauna and flora of Australia are very different from those of the rest of the world. Why might this be true?
A
Life in Australia was wiped out by ancient volcanic eruptions
B
The climate of Australia is unlike that of any other place in the world.
C
They have become different by convergent evolution.
D
Australia has been isolated for about 50 million years.
5) What is the role of heterocysts in a cyanobacterial filament?
A
They carry out photosynthesis and nitrogen fixation.
B
They carry out only photosynthesis.
C
They carry out only nitrogen fixation.
D
They store endospores.
6) A radioactive isotope has a half-life of 1.2 billion years. As measured by the presence of the isotope and its stable decay product, a rock originally contained 10 grams of the radioactive isotope, and now contains 1.25 grams. Approximately how many
A
2.7 billion years
B
3.8 billion years
C
3.6 billion years
D
.3 billion years
7) Biologists are interested in the role of liposomes in the origin of life. They think that liposomes might show how _____.
A
Energy was supplied for the metabolism of the first simple cells
B
Primitive cell membranes could form, grow, and divide
C
Raw materials for organic compounds formed
D
The formation of organic polymers, such as carbohydrates and RNA, were catalyzed
8) Which statement below is not an explanation of how deep-sea vents may have been important factors in the origin of life?
A
Oxygen was abundant near deep-sea vents and encouraged the formation of polymers.
B
The high temperatures associated with deep-sea vents were a source of energy for the reactions necessary for the formation of
C
They may have been the source of some of the carbon-containing compounds that cells use in energy metabolism.
D
Sulfides of iron and nickel common in deep-sea vents are excellent catalysts.
9) Which of these groups includes unicellular organisms that, due to the structure of their cell walls, can withstand pressures equal to the pressure under each leg of a table supporting an elephant?
A
dinoflagellates
B
euglenids
C
ciliates
D
apicomplexans
10) The early atmosphere on Earth is thought to have lacked which one of the following gases?
A
Methane
B
Oxygen
C
Nitrogen
D
Hydrogen
*select an answer for all questions
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