Question 1

Provide at least two types of evidence that support the hypothesis of endosymbiosis.

Accepted Answer

Concepts to Consider: Chloropl...

Question 2

Mitochondria and chloroplasts have their own circular DNA and translational components.

Accepted Answer

A) True 
 B)False

Question 3

Describe the distinguishing organisms and major biological events associated with the following geological time units. 
 A. Paleozoic era 
 B. Cenozoic era

Accepted Answer

Concepts to Consider : Paleozoic era-all...

Question 4

Match between columns
                        Premises: Extinction of large mammals; age of Homo sapiens

Accepted Answer

The Answer of Quaternary 2.6 mya and Carboniferous 359 mya is...

Question 5

Which of the following statements is true?

Accepted Answer

A)   Within a boundary, chemical reactions occur among complex molecules.
B)   A source of energy is coupled to the chemical reaction sequence.
C)   As the pre-cell system continues to evolve, its size and organization decrease.
D)   The pre-cell system develops the ability to deduct.
E)   RNA often has catalytic properties; such enzymatic RNAs are called lysosomes.F) A) and B)
G) A) and E)

Question 6

One of the most significant steps in the evolution of true cells from macromolecular assemblages was the evolution of:

Accepted Answer

A)   electronegativity.
B)   covalent bonding.
C)   hydrogen bonding.
D)   valence electrons.
E)   molecular reproduction.F) A) and B)
G) A) and E)

Question 7

Which theory states that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell?

Accepted Answer

A)   Endosymbiont theory
B)   Heterosymbiont theory
C)   Obligative symbiotic theory
D)   Facultative symbiotic theory
E)   Autotrophic symbiotic theoryF) A) and C)
G) All of the above A

Question 8

What kind of organisms likely perished due to the increase of oxygen in the atmosphere three billion years ago?

Accepted Answer

A)   Heterotrophs
B)   Cyanobacteria
C)   Obligate aerobes
D)   Obligate anaerobes
E)   Facultative anaerobesF) B) and C)
G) C) and D)

Question 9

What feature of a dinosaur determines whether it is a saurischian or an ornithischian dinosaur?

Accepted Answer

A)   Size
B)   Habitat
C)   Feeding preference
D)   Pelvic bone structure
E)   Number of feet it walks onF) All of the above
G) None of the above

Question 10

Presently, it is thought that organic polymers may have formed and accumulated on:

Accepted Answer

A)   silt and sand.
B)   sand and mud.
C)   rocks and clay.
D)   water and shells.
E)   sand and heavy metals.F) All of the above
G) B) and C)

Question 11

What are the protobionts produced by abiotically produced polypeptides?

Accepted Answer

A)   Polybionts
B)   Prokaryotes
C)   Microspheres
D)   Peptidebionts
E)   StromatolitesF) A) and E)
G) D) and E)

Question 12

Which period of Earth represents when evolution was progressing at the most rapid rate, as evidenced by fossils such as those of the Burgess Shale?

Accepted Answer

A)   Silurian period
B)   Cambrian period
C)   Devonian period
D)   Ordovician period
E)   Carboniferous periodF) A) and B)
G) A) and C)

Question 13

A significant reduction in the amount of which gas would allow more ultraviolet radiation to reach Earth's surface?

Accepted Answer

A)   Oxygen
B)   Methane
C)   Ozone
D)   Cyanide
E)   Carbon dioxideF) C) and D)
G) A) and E)

Question 14

Which scientist worked on the concept of simple organic molecules?

Accepted Answer

A)   Anton van Leeuwenhoek
B)   J.B.S. Haldane
C)   Alexander Fleming
D)   Robert Hooke
E)   Francesco RediF) C) and E)
G) A) and E)

Question 15

Match between columns
                        Premises: Gymnosperms common, large dinosaurs

Accepted Answer

The Answer of Devonian 488 mya and Quaternary 2.6 mya is...

Question 16

The Holocene epoch marks the appearance of:

Accepted Answer

A)   humans.
B)   reptiles.
C)   amphibians.
D)   large mammals.
E)   marine vertebrates.F) A) and E)
G) A) and D)

Question 17

Describe the four requirements for chemical evolution and why each was essential.

Accepted Answer

Concepts to Consider: Little or no free oxygen; a source of energy; chemical building blocks including water, dissolved inorganic minerals, and gases; plenty of time

Question 18

Which hypothesis states that life developed from nonliving matter?

Accepted Answer

A)   Abiotic evolution
B)   Natural selection
C)   Organic evolution
D)   Chemical evolution
E)   Inorganic evolutionF) A) and B)
G) A) and C)

Question 19

The first cells were most likely heterotrophic anaerobes because:

Accepted Answer

A)   they were dependent upon cyanobacteria for oxygen.
B)   they manufactured organic molecules and needed oxygen.
C)   they manufactured organic molecules and do not need oxygen.
D)   they utilized preformed organic molecules and needed oxygen.
E)   they utilized preformed organic molecules and did not need oxygen.F) A) and D)
G) None of the above

Question 20

The first photosynthetic organisms to obtain hydrogen by splitting water were the cyanobacteria.

Accepted Answer

A) True 
 B)False

Exam 21: The Origin and Evolutionary History of Life

Provide at least two types of evidence that support the hypothesis of endosymbiosis.

Correct Answer
verified
Concepts to Consider: Chloropl...
View Answer

Mitochondria and chloroplasts have their own circular DNA and translational components.

Correct Answer
verified

Describe the distinguishing organisms and major biological events associated with the following geological time units. A. Paleozoic era B. Cenozoic era

Correct Answer
verified
Concepts to Consider : Paleozoic era-all...
View Answer

Match the period with the corresponding biological events.

Which of the following statements is true?

Correct Answer
verified

One of the most significant steps in the evolution of true cells from macromolecular assemblages was the evolution of:

Correct Answer
verified

Which theory states that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell?

Correct Answer
verified
A

What kind of organisms likely perished due to the increase of oxygen in the atmosphere three billion years ago?

Correct Answer
verified

What feature of a dinosaur determines whether it is a saurischian or an ornithischian dinosaur?

Correct Answer
verified

Presently, it is thought that organic polymers may have formed and accumulated on:

Correct Answer
verified

What are the protobionts produced by abiotically produced polypeptides?

Correct Answer
verified

Which period of Earth represents when evolution was progressing at the most rapid rate, as evidenced by fossils such as those of the Burgess Shale?

Correct Answer
verified

A significant reduction in the amount of which gas would allow more ultraviolet radiation to reach Earth's surface?

Correct Answer
verified

Which scientist worked on the concept of simple organic molecules?

Correct Answer
verified

Match the period with the corresponding biological events.

The Holocene epoch marks the appearance of:

Correct Answer
verified

Describe the four requirements for chemical evolution and why each was essential.

Correct Answer
verified
Concepts to Consider: Little or no free oxygen; a source of energy; chemical building blocks including water, dissolved inorganic minerals, and gases; plenty of time

Which hypothesis states that life developed from nonliving matter?

Correct Answer
verified

The first cells were most likely heterotrophic anaerobes because:

Correct Answer
verified

The first photosynthetic organisms to obtain hydrogen by splitting water were the cyanobacteria.

Correct Answer
verified

Exam 21: The Origin and Evolutionary History of Life

Provide at least two types of evidence that support the hypothesis of endosymbiosis.

Correct AnswerverifiedConcepts to Consider: Chloropl...View AnswerShow Answer

Mitochondria and chloroplasts have their own circular DNA and translational components.

Correct AnswerverifiedShow Answer

Describe the distinguishing organisms and major biological events associated with the following geological time units. A. Paleozoic era B. Cenozoic era

Correct AnswerverifiedConcepts to Consider : Paleozoic era-all...View AnswerShow Answer

Match the period with the corresponding biological events.

Which of the following statements is true?

Correct AnswerverifiedShow Answer

One of the most significant steps in the evolution of true cells from macromolecular assemblages was the evolution of:

Correct AnswerverifiedShow Answer

Which theory states that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and ultimately evolved mutualistic relationships with the host cell?

Correct AnswerverifiedA

What kind of organisms likely perished due to the increase of oxygen in the atmosphere three billion years ago?

Correct AnswerverifiedShow Answer

What feature of a dinosaur determines whether it is a saurischian or an ornithischian dinosaur?

Correct AnswerverifiedShow Answer

Presently, it is thought that organic polymers may have formed and accumulated on:

Correct AnswerverifiedShow Answer

What are the protobionts produced by abiotically produced polypeptides?

Correct AnswerverifiedShow Answer

Which period of Earth represents when evolution was progressing at the most rapid rate, as evidenced by fossils such as those of the Burgess Shale?

Correct AnswerverifiedShow Answer

A significant reduction in the amount of which gas would allow more ultraviolet radiation to reach Earth's surface?

Correct AnswerverifiedShow Answer

Which scientist worked on the concept of simple organic molecules?

Correct AnswerverifiedShow Answer

Match the period with the corresponding biological events.

The Holocene epoch marks the appearance of:

Correct AnswerverifiedShow Answer

Describe the four requirements for chemical evolution and why each was essential.

Correct AnswerverifiedConcepts to Consider: Little or no free oxygen; a source of energy; chemical building blocks including water, dissolved inorganic minerals, and gases; plenty of time

Which hypothesis states that life developed from nonliving matter?

Correct AnswerverifiedShow Answer

The first cells were most likely heterotrophic anaerobes because:

Correct AnswerverifiedShow Answer

The first photosynthetic organisms to obtain hydrogen by splitting water were the cyanobacteria.

Correct AnswerverifiedShow Answer

Correct Answer
verified
Concepts to Consider: Chloropl...
View Answer

Correct Answer
verified

Correct Answer
verified
Concepts to Consider : Paleozoic era-all...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Concepts to Consider: Little or no free oxygen; a source of energy; chemical building blocks including water, dissolved inorganic minerals, and gases; plenty of time

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified