Question 1

Cyanobacteria can be found in columns of fossils referred to as:

Accepted Answer

A)  protobionts. 
B)  anaerobes. 
C)  stromatolites. 
D)  microspheres. 
E)  ribozymes.

Question 2

Figure 21-1
Use the figure to answer the corresponding question(s). 
-The theory illustrated in Figure 21-1 is supported by which piece of additional evidence?

Accepted Answer

A)  The results of the Miller-Urey experiment. 
B)  Burgess shale fossils. 
C)  Ediacarian fossils. 
D)  The presence of DNA in some organelles. 
E)  All answers support the illustrated theory.

Question 3

Reptiles dominated the:

Accepted Answer

A)  Proterozoic era. 
B)  Paleozoic era. 
C)  Mesozoic era. 
D)  Cenozoic era. 
E)  Triassic era.

Question 4

Great swamp forests covered the globe and formed the major coal deposits during the:

Accepted Answer

A)  Jurassic period. 
B)  Eocene epoch. 
C)  Carboniferous period. 
D)  Precambrian. 
E)  Ordovician period.

Question 5

MATCHING
Match the period with the biological events
a.Cambrian 542mya
d.Jurassic 200mya
b.Carboniferous 359 mya
e.Quaternary 2.6 mya
c.Devonian 488 mya
-Forests of ferns, spread of ancient amphibians, first reptiles

Accepted Answer

The answer of MATCHING
Match the period with the biological events
a.Cambrian...

Question 6

The first cells were autrophs,

Accepted Answer

A) True 
 B)False

Question 7

There is evidence that life existed about:

Accepted Answer

A)  3.5 billion years ago. 
B)  2 billion years ago. 
C)  1.3 billion years ago. 
D)  630 million years ago. 
E)  250 million years ago.

Question 8

Clay is considered a possible site for early polymerization because it binds organic monomers and contains zinc and iron ions that may have functioned as ATP,
_______________

Accepted Answer

A) True 
 B)False

Question 9

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

Accepted Answer

A)  carbon dioxide 
B)  methane 
C)  ozone 
D)  cyanide 
E)  oxygen

Question 10

Protobionts produced by abiotically produced polypeptides are called:

Accepted Answer

A)  prokaryotes. 
B)  stromatolites. 
C)  microspheres. 
D)  peptidebionts. 
E)  polybionts.

Question 11

Mitochondria and chloroplasts have their own circular DNA and translational componetns

Accepted Answer

A) True 
 B)False

Question 12

The results of the experiment represented in the accompanying figure and similar experiments include the formation of all of the following except:

Accepted Answer

A)  sugars. 
B)  lipids. 
C)  ATP. 
D)  amino acids. 
E)  oxygen

Question 13

The atmosphere of the early Earth is currently thought to have contained:

Accepted Answer

A)  carbon dioxide, water, oxygen, nitrogen, and hydrogen. 
B)  carbon dioxide, water, carbon monoxide, hydrogen, and nitrogen. 
C)  carbon dioxide, carbon monoxide, water, hydrogen, and nitric oxide. 
D)  carbon dioxide, ozone, nitric oxide, water, and hydrogen sulfide. 
E)  methane, water, ammonia, nitrogen, and oxygen.

Question 14

Mammal-like reptiles arose during the:

Accepted Answer

A)  Carboniferous period. 
B)  Cambrian period. 
C)  Eocene epoch. 
D)  Jurassic period. 
E)  Cretaceous period.

Question 15

The first enzymes were probably:

Accepted Answer

A)  protein reproducing enzymes. 
B)  RNA degrading enzymes. 
C)  DNA synthesis enzymes. 
D)  ribozymes. 
E)  RNA synthesis enzymes.

Question 16

The incorporation of DNA into the information transfer system was advantageous because DNA is a catalytic molecule.
________

Accepted Answer

A) True 
 B)False

Question 17

The ornithischian dinosaurs:

Accepted Answer

A)  were carnivorous. 
B)  had pelvic bones similar to birds. 
C)  died out during the Jurassic period. 
D)  were the ancestors of the crocodiles and snakes of today. 
E)  were usually small dinosaurs.

Question 18

Assemblages of abiotically produced polymers are called:

Accepted Answer

A)  stomatolites. 
B)  protobionts. 
C)  polyribosomes. 
D)  endosymbionts. 
E)  ribozymes.

Question 19

Shallow seas covered much of the land during the:

Accepted Answer

A)  Silurian period. 
B)  Precambrian period. 
C)  Ordovician period. 
D)  Triassic period. 
E)  Oligocene epoch.

Question 20

The earliest photosynthetic organisms arose about:

Accepted Answer

A)  3.8-4.6 billion years ago. 
B)  3.1-3.5 billion years ago. 
C)  1.3 billion years ago. 
D)  630 million years ago. 
E)  250 million years ago.

Exam 21: The Origin and Evolutionary History of Life

Cyanobacteria can be found in columns of fossils referred to as:

Figure 21-1 Use the figure to answer the corresponding question(s) . -The theory illustrated in Figure 21-1 is supported by which piece of additional evidence?

Reptiles dominated the:

Great swamp forests covered the globe and formed the major coal deposits during the:

MATCHING Match the period with the biological events a.Cambrian 542mya d.Jurassic 200mya b.Carboniferous 359 mya e.Quaternary 2.6 mya c.Devonian 488 mya -Forests of ferns, spread of ancient amphibians, first reptiles

The first cells were autrophs,

There is evidence that life existed about:

Clay is considered a possible site for early polymerization because it binds organic monomers and contains zinc and iron ions that may have functioned as ATP, _______________

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

Protobionts produced by abiotically produced polypeptides are called:

Mitochondria and chloroplasts have their own circular DNA and translational componetns

The results of the experiment represented in the accompanying figure and similar experiments include the formation of all of the following except:

The atmosphere of the early Earth is currently thought to have contained:

Mammal-like reptiles arose during the:

The first enzymes were probably:

The incorporation of DNA into the information transfer system was advantageous because DNA is a catalytic molecule. ________

The ornithischian dinosaurs:

Assemblages of abiotically produced polymers are called:

Shallow seas covered much of the land during the:

The earliest photosynthetic organisms arose about: