Question 1

What type of extremophiles are likely to thrive in saline lakes?

Accepted Answer

A) acidophiles 
B) thermophiles 
C) halophiles 
D) anerobes 
A) acidophiles 
B) thermophiles 
C) halophiles 
D) anerobes C

Question 2

Given the surface waters on Mars were likely very acidic,scientists surmise that the organisms that could have survived would likely be

Accepted Answer

A) extremophiles. 
B) thermophiles. 
C) autotrophs. 
D) heterotrophs. 
A) extremophiles. 
B) thermophiles. 
C) autotrophs. 
D) heterotrophs. A

Question 3

Clay layers enriched in _______ found in the rock record at the Cretaceous-Tertiary boundary provide evidence of an asteroid impact.

Accepted Answer

A) uranium 
B) potassium 
C) iridium 
D) plutonium 
A) uranium 
B) potassium 
C) iridium 
D) plutonium C

Question 4

The distance from a star where a planet can sustain liquid water at the surface is known as the

Accepted Answer

A) water zone. 
B) critical zone. 
C) habitable zone. 
D) bio zone. 
A) water zone. 
B) critical zone. 
C) habitable zone. 
D) bio zone.

Question 5

Miller's experimental findings that early planetary material could have contained amino acids were later borne out by the study of

Accepted Answer

A) stromatolites. 
B) microbes. 
C) meterorites. 
D) lunar rocks. 
A) stromatolites. 
B) microbes. 
C) meterorites. 
D) lunar rocks.

Question 6

Scientists believe that early Earth's atmosphere was devoid of oxygen because of the existence of ________ at that time.

Accepted Answer

A) volcanic eruptions 
B) plate tectonics 
C) oceans 
D) amino acids 
A) volcanic eruptions 
B) plate tectonics 
C) oceans 
D) amino acids

Question 7

Humans are

Accepted Answer

A) photoautotrophs. 
B) photoheterotrophs. 
C) chemoauthotrophs. 
D) chemoheterotrophs. 
A) photoautotrophs. 
B) photoheterotrophs. 
C) chemoauthotrophs. 
D) chemoheterotrophs.

Question 8

During metabolism water combines with ________ to produce glucose and ________.

Accepted Answer

A) oxygen; carbon dioxide 
B) carbon dioxide; oxygen 
C) carbon; methane 
D) methane; hydrogen 
A) oxygen; carbon dioxide 
B) carbon dioxide; oxygen 
C) carbon; methane 
D) methane; hydrogen

Question 9

Ecosystems are characterized by the exchange of energy and matter between their ;_________ and ____________.

Accepted Answer

A) air; water 
B) plants; animals 
C) fluids; solids 
D) organisms; environments 
A) air; water 
B) plants; animals 
C) fluids; solids 
D) organisms; environments

Question 10

A rise in ocean temperatures can cause ______ to be released from ocean sediments,which can accelerate global warming.

Accepted Answer

A) carbon dioxide 
B) sulfur dioxide 
C) methane 
D) oxygen 
A) carbon dioxide 
B) sulfur dioxide 
C) methane 
D) oxygen

Question 11

When organisms are no longer able to adapt to environmental changes they

Accepted Answer

A) radiate. 
B) habituate. 
C) evolve. 
D) become extinct. 
A) radiate. 
B) habituate. 
C) evolve. 
D) become extinct.

Question 12

The mass extinction event at the Paleocene-Eocene boundary is related to

Accepted Answer

A) global warming. 
B) global cooling. 
C) an asteroid impact. 
D) ozone depletion. 
A) global warming. 
B) global cooling. 
C) an asteroid impact. 
D) ozone depletion.

Question 13

Organisms can reduce global warming by

Accepted Answer

A) producing carbon dioxide and methane. 
B) producing oxygen. 
C) consuming oxygen. 
D) consuming carbon dioxide and methane. 
A) producing carbon dioxide and methane. 
B) producing oxygen. 
C) consuming oxygen. 
D) consuming carbon dioxide and methane.

Question 14

The Gunflint Formation preserves ________-year-old microfossils similar to modern microbes.

Accepted Answer

A) 3)5-billion 
B) 2)5-billion 
C) 2)1-billion 
D) 1)1-billion 
A) 3)5-billion 
B) 2)5-billion 
C) 2)1-billion 
D) 1)1-billion

Question 15

The search for extraterrestrial life is a branch of science known as

Accepted Answer

A) microbiology. 
B) astrobiology. 
C) Martian biology. 
D) solarbiology. 
A) microbiology. 
B) astrobiology. 
C) Martian biology. 
D) solarbiology.

Question 16

Microbes that live in environments that would kill any other organism are called

Accepted Answer

A) thermophiles. 
B) extremophiles. 
C) slime molds. 
D) heterotrophs. 
A) thermophiles. 
B) extremophiles. 
C) slime molds. 
D) heterotrophs.

Question 17

The first hominids appeared _________ years ago.

Accepted Answer

A) 50 million 
B) 70 million 
C) 5 million 
D) 0)2 million 
A) 50 million 
B) 70 million 
C) 5 million 
D) 0)2 million

Question 18

Acidophiles are extremophiles that a tolerance for high

Accepted Answer

A) salinity. 
B) acidity. 
C) temperature. 
D) oxygen content. 
A) salinity. 
B) acidity. 
C) temperature. 
D) oxygen content.

Question 19

Microbes are important on Earth because

Accepted Answer

A) they regulate geologic processes such as weathering. 
B) they produce gases such as oxygen and carbon dioxide. 
C) they facilitate the precipitation of minerals. 
D) they do all of the above. 
A) they regulate geologic processes such as weathering. 
B) they produce gases such as oxygen and carbon dioxide. 
C) they facilitate the precipitation of minerals. 
D) they do all of the above.

Question 20

Organisms need which of the following to survive?

Accepted Answer

A) nutrients 
B) water 
C) energy 
D) all of the above 
A) nutrients 
B) water 
C) energy 
D) all of the above

Exam 11: Geobiology: Life Interacts With Earth

What type of extremophiles are likely to thrive in saline lakes?

Given the surface waters on Mars were likely very acidic,scientists surmise that the organisms that could have survived would likely be

Clay layers enriched in _______ found in the rock record at the Cretaceous-Tertiary boundary provide evidence of an asteroid impact.

The distance from a star where a planet can sustain liquid water at the surface is known as the

Miller's experimental findings that early planetary material could have contained amino acids were later borne out by the study of

Scientists believe that early Earth's atmosphere was devoid of oxygen because of the existence of ________ at that time.

Humans are

During metabolism water combines with ________ to produce glucose and ________.

Ecosystems are characterized by the exchange of energy and matter between their ;_________ and ____________.

A rise in ocean temperatures can cause ______ to be released from ocean sediments,which can accelerate global warming.

When organisms are no longer able to adapt to environmental changes they

The mass extinction event at the Paleocene-Eocene boundary is related to

Organisms can reduce global warming by

The Gunflint Formation preserves ________-year-old microfossils similar to modern microbes.

The search for extraterrestrial life is a branch of science known as

Microbes that live in environments that would kill any other organism are called

The first hominids appeared _________ years ago.

Acidophiles are extremophiles that a tolerance for high

Microbes are important on Earth because

Organisms need which of the following to survive?

The Earth System

Plate Tectonics: The Unifying Theory

Earth Materials: Minerals and Rocks

Igneous Rocks: Solids From Melts

Sedimentation: Rocks Formed by Surface Processes

Metamorphism: Alteration of Rocks by Temperature and Pressure

Deformation: Modification of Rocks by Folding and Fracturing

Clocks in Rocks: Timing the Geologic Period

Early History of the Terrestrial Planets

History of the Continents

Volcanoes

Earthquakes

Exploring Earths Interior

The Climate System

Weathering,erosion,and Mass Wasting: Interactions Between the Climate and Plate Tectonic Systems

The Hydrologic Cycle and Groundwater

Stream Transport: From Mountains to Oceans

Winds and Deserts

Coastlines and Ocean Basins

Glaciers: the Work of Ice

Landscapes: Tectonic and Climate Interaction

The Human Impact of Earths Environment

Filters

During metabolism water combines with to produce glucose and .

Ecosystems are characterized by the exchange of energy and matter between their ;_ and ____.