Question 1

The process that explains the movements of the earth's continents is

Accepted Answer

A) continental drift. 
B) genetic drift. 
C) speciation. 
D) plate tectonics. 
A) continental drift. 
B) genetic drift. 
C) speciation. 
D) plate tectonics. D

Question 2

The earth's continents drift because

Accepted Answer

A) they are actually floating on the surface of the sea. 
B) different areas of land alternately rise above and sink below the oceans. 
C) the plates of the earth's crust interact with the molten rock below. 
D) gravitation forces acting on the earth change over time. 
A) they are actually floating on the surface of the sea. 
B) different areas of land alternately rise above and sink below the oceans. 
C) the plates of the earth's crust interact with the molten rock below. 
D) gravitation forces acting on the earth change over time. C

Question 3

Some of the earliest fossils indicate that living creatures over 3 billion years ago may already have been

Accepted Answer

A) capable of photosynthesis. 
B) reproducing sexually. 
C) made up of more than one cell. 
D) living on land. 
A) capable of photosynthesis. 
B) reproducing sexually. 
C) made up of more than one cell. 
D) living on land. A

Question 4

The extinction that wiped out the dinosaurs resulted initially from

Accepted Answer

A) an asteroid impact. 
B) the coming of the Ice Ages. 
C) the formation of a supercontinent through continental drift. 
D) global warming through a greenhouse effect. 
A) an asteroid impact. 
B) the coming of the Ice Ages. 
C) the formation of a supercontinent through continental drift. 
D) global warming through a greenhouse effect.

Question 5

Sexual reproduction probably evolved

Accepted Answer

A) to increase genetic variation. 
B) to speed the evolution of complex organisms. 
C) so that reproduction was more pleasurable and thus more frequent. 
D) out of a mechanism of genetic exchange to replace defective genes. 
A) to increase genetic variation. 
B) to speed the evolution of complex organisms. 
C) so that reproduction was more pleasurable and thus more frequent. 
D) out of a mechanism of genetic exchange to replace defective genes.

Question 6

At the time the earth was formed,the universe was what fraction of its present size?

Accepted Answer

A) 1/4 
B) 1/2 
C) 2/3 
D) 100% 
A) 1/4 
B) 1/2 
C) 2/3 
D) 100%

Question 7

The mass extinction of 65 million years ago included

Accepted Answer

A) just the dinosaurs. 
B) only land animals. 
C) large land animals,many plants,and much of the ocean's plankton. 
D) most of the primates except our ancestors. 
A) just the dinosaurs. 
B) only land animals. 
C) large land animals,many plants,and much of the ocean's plankton. 
D) most of the primates except our ancestors.

Question 8

Most of the history of life on earth has involved

Accepted Answer

A) simple,single-celled organisms. 
B) complex,multicellular organisms. 
C) dinosaurs. 
D) mammals. 
A) simple,single-celled organisms. 
B) complex,multicellular organisms. 
C) dinosaurs. 
D) mammals.

Question 9

The universe

Accepted Answer

A) has always been the same size as it is now. 
B) is shrinking. 
C) is expanding. 
D) expands and shrinks in cycles. 
A) has always been the same size as it is now. 
B) is shrinking. 
C) is expanding. 
D) expands and shrinks in cycles.

Question 10

Multicellular organisms first appear

Accepted Answer

A) 3.6 billion years ago. 
B) 2 billion years ago. 
C) 1.7 billion years ago. 
D) 5 million years ago. 
A) 3.6 billion years ago. 
B) 2 billion years ago. 
C) 1.7 billion years ago. 
D) 5 million years ago.

Question 11

The sudden appearance of organisms with shells and other hard parts is referred to as

Accepted Answer

A) the Big Bang. 
B) the Cambrian Explosion. 
C) a mass extinction. 
D) the origin of species. 
A) the Big Bang. 
B) the Cambrian Explosion. 
C) a mass extinction. 
D) the origin of species.

Question 12

Photosynthesis is

Accepted Answer

A) a process found only among modern flowering plants. 
B) a process common to many animals and plants. 
C) first found after the Cambrian Explosion. 
D) found among some of the earliest life forms on earth. 
A) a process found only among modern flowering plants. 
B) a process common to many animals and plants. 
C) first found after the Cambrian Explosion. 
D) found among some of the earliest life forms on earth.

Question 13

Organic compounds on earth first came from

Accepted Answer

A) processes that are still unknown. 
B) rearrangements of inorganic compounds. 
C) amino acids. 
D) outer space,via an asteroid hitting the earth. 
A) processes that are still unknown. 
B) rearrangements of inorganic compounds. 
C) amino acids. 
D) outer space,via an asteroid hitting the earth.

Question 14

The formation of the "supercontinent" of Pangea

Accepted Answer

A) was responsible for the evolution of the primates. 
B) may have contributed to the most extensive ancient mass extinction. 
C) caused the evolution of multicellular animals. 
D) is known as the Big Bang. 
A) was responsible for the evolution of the primates. 
B) may have contributed to the most extensive ancient mass extinction. 
C) caused the evolution of multicellular animals. 
D) is known as the Big Bang.

Question 15

How old is the first evidence of life on earth?

Accepted Answer

A) 10,000 years 
B) 5 million years 
C) 3.6 billion years 
D) 15 billion years 
A) 10,000 years 
B) 5 million years 
C) 3.6 billion years 
D) 15 billion years

Question 16

The earth was formed about

Accepted Answer

A) 1 million years ago. 
B) 3.2 million years ago. 
C) 4.5 billion years ago. 
D) 15 billion years ago. 
A) 1 million years ago. 
B) 3.2 million years ago. 
C) 4.5 billion years ago. 
D) 15 billion years ago.

Question 17

The heavy elements that now make up the stars,planets,and even us were formed

Accepted Answer

A) at the very beginning of the universe,during the Big Bang. 
B) as the energy of the early universe condensed into matter. 
C) by unknown processes. 
D) by nuclear reactions within early stars. 
A) at the very beginning of the universe,during the Big Bang. 
B) as the energy of the early universe condensed into matter. 
C) by unknown processes. 
D) by nuclear reactions within early stars.

Question 18

At the moment,the best guess for the age of the universe is

Accepted Answer

A) about 10,000 years. 
B) 4.5 billion years. 
C) 13 billion years. 
D) 20 or more billion years. 
A) about 10,000 years. 
B) 4.5 billion years. 
C) 13 billion years. 
D) 20 or more billion years.

Question 19

An important result of the evolution of sexual reproduction was that

Accepted Answer

A) reproduction became more pleasurable. 
B) the mutation rate was decreased. 
C) genetic variation was increased. 
D) organisms became suddenly multicellular. 
A) reproduction became more pleasurable. 
B) the mutation rate was decreased. 
C) genetic variation was increased. 
D) organisms became suddenly multicellular.

Question 20

What is the relationship in time between dinosaurs and mammals?

Accepted Answer

A) Mammals evolved only after the dinosaurs became extinct. 
B) Mammals evolved first followed by the dinosaurs. 
C) Mammals and dinosaurs appear in the fossil record at about the same time. 
D) Mammals evolved directly from dinosaurs. 
A) Mammals evolved only after the dinosaurs became extinct. 
B) Mammals evolved first followed by the dinosaurs. 
C) Mammals and dinosaurs appear in the fossil record at about the same time. 
D) Mammals evolved directly from dinosaurs.

The process that explains the movements of the earth's continents is

The earth's continents drift because

Some of the earliest fossils indicate that living creatures over 3 billion years ago may already have been

The extinction that wiped out the dinosaurs resulted initially from

Sexual reproduction probably evolved

At the time the earth was formed,the universe was what fraction of its present size?

The mass extinction of 65 million years ago included

Most of the history of life on earth has involved

The universe

Multicellular organisms first appear

The sudden appearance of organisms with shells and other hard parts is referred to as

Photosynthesis is

Organic compounds on earth first came from

The formation of the "supercontinent" of Pangea

How old is the first evidence of life on earth?

The earth was formed about

The heavy elements that now make up the stars,planets,and even us were formed

At the moment,the best guess for the age of the universe is

An important result of the evolution of sexual reproduction was that

What is the relationship in time between dinosaurs and mammals?

Biological Anthropology

The Evolution of Evolution

Evolutionary Genetics

The Processes of Evolution

The Origin of Species and the Shape of Evolution

The Primates

Primate Behavior and Human Evolution

Studying the Human Past

Evolution of the Early Hominids

The Evolution of Genus Homo

Evolution and Adaptation in Human Populations

Human Biological Diversity

Biological Anthropology and Todays World

Filters

Exam 6: A Brief Evolutionary Timetable

The process that explains the movements of the earth's continents is

The earth's continents drift because

Some of the earliest fossils indicate that living creatures over 3 billion years ago may already have been

The extinction that wiped out the dinosaurs resulted initially from

Sexual reproduction probably evolved

At the time the earth was formed,the universe was what fraction of its present size?

The mass extinction of 65 million years ago included

Most of the history of life on earth has involved

The universe

Multicellular organisms first appear

The sudden appearance of organisms with shells and other hard parts is referred to as

Photosynthesis is

Organic compounds on earth first came from

The formation of the "supercontinent" of Pangea

How old is the first evidence of life on earth?

The earth was formed about

The heavy elements that now make up the stars,planets,and even us were formed

At the moment,the best guess for the age of the universe is

An important result of the evolution of sexual reproduction was that

What is the relationship in time between dinosaurs and mammals?

Biological Anthropology

The Evolution of Evolution

Evolutionary Genetics

The Processes of Evolution

The Origin of Species and the Shape of Evolution

The Primates

Primate Behavior and Human Evolution

Studying the Human Past

Evolution of the Early Hominids

The Evolution of Genus Homo

Evolution and Adaptation in Human Populations

Human Biological Diversity

Biological Anthropology and Todays World

Filters