Question 1

The theory that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell is termed the:

Accepted Answer

A)  obligative symbiotic theory. 
B)  heterosymbiont theory. 
C)  endosymbiont theory. 
D)  facultative symbiotic theory. 
E)  autotrophic symbiotic theory.

Question 2

Amino acids and other organic molecules were formed in the laboratory of Miller and Urey from which of the following?

Accepted Answer

A)  heat, electrical discharge, water, nitric oxide, and carbon dioxide 
B)  heat, ultraviolet radiation, water, carbon dioxide, and amines 
C)  heat, infrared radiation, water, carbon dioxide, and free nitrogen 
D)  hydrogen, methane, water, ammonia, and electrical discharge 
E)  ultraviolet radiation, electrical discharge, carbon dioxide, nitrogen, and ammonia

Question 3

The first organisms to release oxygen by photosynthesis were:

Accepted Answer

A)  gymnosperms. 
B)  green sulfur bacteria. 
C)  algae. 
D)  flowering plants. 
E)  cyanobacteria.

Question 4

The earliest birds had all of the folowing traits EXCEPT::

Accepted Answer

A)  appeared during the late Jurassic period. 
B)  had teeth and long tails. 
C)  probably glided from trees. 
D)  had feathers. 
E)  had long sharp teeth.

Question 5

The first fish:

Accepted Answer

A)  were small and jawless but had bony armor. 
B)  appeared about 2 billion years ago. 
C)  were the lobe-finned fish. 
D)  appeared in the Silurian period. 
E)  developed in the Precambrian period.

Question 6

The "Age of Fishes" is an informal name for the:

Accepted Answer

A)  Ordovician period. 
B)  Silurian period. 
C)  Devonian period. 
D)  Permian period. 
E)  Carboniferous period.

Question 7

The atmospheric gas that prevents the majority of the sun's ultraviolet radiation from penetrating to the Earth's surface is:

Accepted Answer

A)  methane. 
B)  ammonia. 
C)  oxygen. 
D)  ozone. 
E)  carbon dioxide.

Question 8

Vascular plants and air-breathing animals first appeared during the:

Accepted Answer

A)  Silurian period. 
B)  Ordovician period. 
C)  Cambrian period. 
D)  Permian period. 
E)  Cretaceous period.

Question 9

Macromolecules that are capable of self-replication are:

Accepted Answer

A)  proteins. 
B)  polysaccharides. 
C)  steroids. 
D)  DNA and RNA. 
E)  triglycerides.

Question 10

The first photsynthetic autotrophs used the energy of the sun to split H2O because it is not very electronegative.
_______

Accepted Answer

A) True 
 B)False

Question 11

The greatest mass extinction of all time, which occurred at the end of the Permian period:

Accepted Answer

A)  affected plants living on land more than any other group. 
B)  was spread out over several million years. 
C)  resulted in the extinction of more than 90% of all existing marine species. 
D)  only impacted a few geographic regions, although the impact in these regions was staggering. 
E)  did not affect terrestrial species.

Question 12

Which of the following gases was not present in the Earth's early atmosphere but appeared after the evolution of certain organisms?

Accepted Answer

A)  hydrogen 
B)  methane 
C)  nitrogen 
D)  oxygen 
E)  carbon dioxide

Question 13

Dragonflies that ranged in size from those smaller than today's dragonflies to some with wingspans of 75 centimeters (2.5 feet) appeared during the:

Accepted Answer

A)  Cambrian period. 
B)  Ordovician period. 
C)  Silurian period. 
D)  Devonian period. 
E)  Carboniferous period.

Question 14

Not much physical evidence of life is available from rocks of the Precambrian because these ancient rocks:

Accepted Answer

A)  have been greatly eroded in most areas. 
B)  have been deeply buried in most areas. 
C)  have been deposited in oceanic trenches deep in the oceans. 
D)  occupy inaccessible areas of mountainous regions. 
E)  occupy the polar regions and are thus covered by glaciers.

Question 15

A compound that could not have been present in the early atmosphere, because it is quite reactive and would have broken down organic molecules that were a necessary step in the origin of life on Earth, is:

Accepted Answer

A)  oxygen. 
B)  sulfur dioxide. 
C)  hydrogen sulfide. 
D)  carbon dioxide. 
E)  sodium chloride.

Question 16

During the Pleistocene epoch, plant communities changed dynamically in response to:

Accepted Answer

A)  a meteor impact. 
B)  intense grazing pressure. 
C)  competition with gymnosperms. 
D)  iridium in the soil. 
E)  fluctuating climates (ice ages).

Question 17

Amphibians' history include all of the following EXCEPT:

Accepted Answer

A)  underwent an adaptive radiation during the Carboniferous period. 
B)  inhabited both aquatic and terrestrial ecosystems. 
C)  are thought to have descended from lungfish during the late Devonian period. 
D)  were the dominant terrestrial carnivores of the Carboniferous period. 
E)  appeared for the first time in the Silurian period

Question 18

Which of the following statements about dinosaurs is false?

Accepted Answer

A)  Some species lived in social groups and hunted in packs. 
B)  Dinosaurs were all slow-moving, with relatively low metabolic rates. 
C)  Fossils of dinosaurs with feathers suggest that feathers first evolved to provide insulation. 
D)  Dinosaur social behaviors include courtship rituals and parental nurturing of the young. 
E)  Dinosaurs underwent an extensive radiation throughout the Jurassic and Cretaceous periods.

Question 19

The serial endosymbiosis hypothesis states that the origin of mitochondria and chloroplasts was the result of a mutually advantageous symbiotic relationship between two eukaryotic organisms.
___________

Accepted Answer

A) True 
 B)False

Question 20

The Earth's early atmosphere was probably strongly:

Accepted Answer

A)  oxidizing. 
B)  electronegative. 
C)  reducing. 
D)  ionic. 
E)  acidic.

Exam 21: The Origin and Evolutionary History of Life

The theory that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell is termed the:

Amino acids and other organic molecules were formed in the laboratory of Miller and Urey from which of the following?

The first organisms to release oxygen by photosynthesis were:

The earliest birds had all of the folowing traits EXCEPT::

The first fish:

The "Age of Fishes" is an informal name for the:

The atmospheric gas that prevents the majority of the sun's ultraviolet radiation from penetrating to the Earth's surface is:

Vascular plants and air-breathing animals first appeared during the:

Macromolecules that are capable of self-replication are:

The first photsynthetic autotrophs used the energy of the sun to split H₂O because it is not very electronegative. _______

The greatest mass extinction of all time, which occurred at the end of the Permian period:

Which of the following gases was not present in the Earth's early atmosphere but appeared after the evolution of certain organisms?

Dragonflies that ranged in size from those smaller than today's dragonflies to some with wingspans of 75 centimeters (2.5 feet) appeared during the:

Not much physical evidence of life is available from rocks of the Precambrian because these ancient rocks:

A compound that could not have been present in the early atmosphere, because it is quite reactive and would have broken down organic molecules that were a necessary step in the origin of life on Earth, is:

During the Pleistocene epoch, plant communities changed dynamically in response to:

Amphibians' history include all of the following EXCEPT:

Which of the following statements about dinosaurs is false?

The serial endosymbiosis hypothesis states that the origin of mitochondria and chloroplasts was the result of a mutually advantageous symbiotic relationship between two eukaryotic organisms. ___________

The Earth's early atmosphere was probably strongly:

Exam 21: The Origin and Evolutionary History of Life

The theory that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell is termed the:

Amino acids and other organic molecules were formed in the laboratory of Miller and Urey from which of the following?

The first organisms to release oxygen by photosynthesis were:

The earliest birds had all of the folowing traits EXCEPT::

The first fish:

The "Age of Fishes" is an informal name for the:

The atmospheric gas that prevents the majority of the sun's ultraviolet radiation from penetrating to the Earth's surface is:

Vascular plants and air-breathing animals first appeared during the:

Macromolecules that are capable of self-replication are:

The first photsynthetic autotrophs used the energy of the sun to split H2O because it is not very electronegative. _______

The greatest mass extinction of all time, which occurred at the end of the Permian period:

Which of the following gases was not present in the Earth's early atmosphere but appeared after the evolution of certain organisms?

Dragonflies that ranged in size from those smaller than today's dragonflies to some with wingspans of 75 centimeters (2.5 feet) appeared during the:

Not much physical evidence of life is available from rocks of the Precambrian because these ancient rocks:

A compound that could not have been present in the early atmosphere, because it is quite reactive and would have broken down organic molecules that were a necessary step in the origin of life on Earth, is:

During the Pleistocene epoch, plant communities changed dynamically in response to:

Amphibians' history include all of the following EXCEPT:

Which of the following statements about dinosaurs is false?

The serial endosymbiosis hypothesis states that the origin of mitochondria and chloroplasts was the result of a mutually advantageous symbiotic relationship between two eukaryotic organisms. ___________

The Earth's early atmosphere was probably strongly:

The first photsynthetic autotrophs used the energy of the sun to split H₂O because it is not very electronegative. _______