Question 1

There are two important aspects to biological evolution: descent from a common ancestor and the fossil record.

Accepted Answer

A) True 
 B)False

Question 2

The early Earth's atmosphere was not the same as it is today.

Accepted Answer

A) True 
 B)False

Question 3

The early atmosphere of Earth consisted mainly of

Accepted Answer

A)  hydrogen, oxygen, and carbon dioxide. 
B)  oxygen, water vapor, and carbon monoxide. 
C)  water vapor, nitrogen, and carbon dioxide. 
D)  hydrogen, carbon monoxide, and nitrogen. 
E)  water vapor, hydrogen, and carbon dioxide. 
A)  hydrogen, oxygen, and carbon dioxide. 
B)  oxygen, water vapor, and carbon monoxide. 
C)  water vapor, nitrogen, and carbon dioxide. 
D)  hydrogen, carbon monoxide, and nitrogen. 
E)  water vapor, hydrogen, and carbon dioxide.

Question 4

Describe the four stages of chemical and biological evolution.

Accepted Answer

Stage 1: Small organic molecules evolved

Question 5

What type of rock preserves fossils well?

Accepted Answer

A)  sedimentary rock 
B)  igneous rock 
C)  metamorphic rock 
D)  gravel 
E)  granite 
A)  sedimentary rock 
B)  igneous rock 
C)  metamorphic rock 
D)  gravel 
E)  granite

Question 6

Which anatomical feature is found in humans that is absent in chimpanzees?

Accepted Answer

A)  arched foot 
B)  pelvis is long and narrow 
C)  femurs angle out at the knees 
D)  there is a slight curve in the spine 
E)  the knee supports very little weight 
A)  arched foot 
B)  pelvis is long and narrow 
C)  femurs angle out at the knees 
D)  there is a slight curve in the spine 
E)  the knee supports very little weight

Question 7

Which piece of evidence would strongly support the RNA-first hypothesis?

Accepted Answer

A)  finding a protocell that could carry on metabolism as well as reproduce 
B)  discovering a way to make RNA more stable than DNA 
C)  finding a mechanism whereby proteins could assemble DNA out of free nucleotides 
D)  being able to build microspheres that contain only protein and RNA 
E)  finding a living organism that uses RNA as its genetic material 
A)  finding a protocell that could carry on metabolism as well as reproduce 
B)  discovering a way to make RNA more stable than DNA 
C)  finding a mechanism whereby proteins could assemble DNA out of free nucleotides 
D)  being able to build microspheres that contain only protein and RNA 
E)  finding a living organism that uses RNA as its genetic material

Question 8

In the out-of-Africa hypothesis,there was interbreeding between the ancestors of modern humans on three continents.

Accepted Answer

A) True 
 B)False

Question 9

What energy source was used by Stanley Miller in his 1953 experiment to replicate the Earth's early environment?

Accepted Answer

A)  electric spark 
B)  heat 
C)  ultraviolet radiation 
D)  gamma radiation 
E)  sunlight 
A)  electric spark 
B)  heat 
C)  ultraviolet radiation 
D)  gamma radiation 
E)  sunlight

Question 10

Which statement is accurate if the first true cell arose by the RNA-first hypothesis?

Accepted Answer

A)  The first cell had RNA genes that could have specified protein synthesis. 
B)  Proteins in the protocell would have evolved the ability to synthesize DNA. 
C)  RNA genes replicated because of the presence of proteins. 
D)  All of these statements support the RNA-first hypothesis. 
E)  None of these statements support the RNA-first hypothesis. 
A)  The first cell had RNA genes that could have specified protein synthesis. 
B)  Proteins in the protocell would have evolved the ability to synthesize DNA. 
C)  RNA genes replicated because of the presence of proteins. 
D)  All of these statements support the RNA-first hypothesis. 
E)  None of these statements support the RNA-first hypothesis.

Question 11

Which of the following is not an important anatomical feature for determining if a fossil is a hominin?

Accepted Answer

A)  absence of sharp canines 
B)  bipedal posture 
C)  flat face 
D)  brain size 
E)  absence of a chin 
A)  absence of sharp canines 
B)  bipedal posture 
C)  flat face 
D)  brain size 
E)  absence of a chin

Question 12

According to evolutionary theory humans are descended from extant apes.

Accepted Answer

A) True 
 B)False

Question 13

Human characteristics did not evolve all at one time.

Accepted Answer

A) True 
 B)False

Question 14

What is the earliest fossil hominin?

Accepted Answer

A)  Sahelanthropus tchadensis 
B)  Australopithecus robustus 
C)  Australopithecus africanus 
D)  Ardipithecus kadabba 
E)  Ardipithecus ramidus 
A)  Sahelanthropus tchadensis 
B)  Australopithecus robustus 
C)  Australopithecus africanus 
D)  Ardipithecus kadabba 
E)  Ardipithecus ramidus

Question 15

Which statement regarding cell reproduction is true?

Accepted Answer

A)  DNA replicates before cell division occurs. 
B)  Cell division occurs prior to DNA replication. 
C)  DNA replication and cell division occur at the same time. 
D)  There is no DNA replication during cell reproduction. 
E)  There is no cell division during cell reproduction. 
A)  DNA replicates before cell division occurs. 
B)  Cell division occurs prior to DNA replication. 
C)  DNA replication and cell division occur at the same time. 
D)  There is no DNA replication during cell reproduction. 
E)  There is no cell division during cell reproduction.

Question 16

What happens in chimps and humans when the snout is shortened considerably?

Accepted Answer

A)  The sense of smell is dramatically reduced. 
B)  The eyes move to the front and allow for stereoscopic vision. 
C)  This allows for the development of a chin. 
D)  Canine teeth are lost. 
E)  Vocalization becomes possible. 
A)  The sense of smell is dramatically reduced. 
B)  The eyes move to the front and allow for stereoscopic vision. 
C)  This allows for the development of a chin. 
D)  Canine teeth are lost. 
E)  Vocalization becomes possible.

Question 17

Which of the following is not a characteristic of the Neandertals?

Accepted Answer

A)  They had massive brow ridges. 
B)  They are considered H. sapiens. 
C)  The pubic bone was long compared to ours. 
D)  The brain size was larger than ours. 
E)  They were heavily muscled. 
A)  They had massive brow ridges. 
B)  They are considered H. sapiens. 
C)  The pubic bone was long compared to ours. 
D)  The brain size was larger than ours. 
E)  They were heavily muscled.

Question 18

Miller's experiment showed that life could arise via chemical evolution.

Accepted Answer

A) True 
 B)False

Question 19

What is a characteristic that makes an organism able to survive and reproduce in its environment?

Accepted Answer

A)  culture 
B)  selection 
C)  analogy 
D)  adaptation 
E)  homology 
A)  culture 
B)  selection 
C)  analogy 
D)  adaptation 
E)  homology

Question 20

List and explain the elements of the natural selection process.

Accepted Answer

1.Variation exists within a population.P

Exam 23: Human Evolution

There are two important aspects to biological evolution: descent from a common ancestor and the fossil record.

The early Earth's atmosphere was not the same as it is today.

The early atmosphere of Earth consisted mainly of

Describe the four stages of chemical and biological evolution.

What type of rock preserves fossils well?

Which anatomical feature is found in humans that is absent in chimpanzees?

Which piece of evidence would strongly support the RNA-first hypothesis?

In the out-of-Africa hypothesis,there was interbreeding between the ancestors of modern humans on three continents.

What energy source was used by Stanley Miller in his 1953 experiment to replicate the Earth's early environment?

Which statement is accurate if the first true cell arose by the RNA-first hypothesis?

Which of the following is not an important anatomical feature for determining if a fossil is a hominin?

According to evolutionary theory humans are descended from extant apes.

Human characteristics did not evolve all at one time.

What is the earliest fossil hominin?

Which statement regarding cell reproduction is true?

What happens in chimps and humans when the snout is shortened considerably?

Which of the following is not a characteristic of the Neandertals?

Miller's experiment showed that life could arise via chemical evolution.

What is a characteristic that makes an organism able to survive and reproduce in its environment?

List and explain the elements of the natural selection process.

Exploring Life and Science

Chemistry of Life

Cell Structure and Function

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

The Lymphatic and Immune Systems

Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

Dna Biology and Technology

Ecology and the Nature of Ecosystems

Human Interactions With the Biosphere

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