Question 1

Which scientist is given credit for proposing the endosymbiont theory?

Accepted Answer

A)  Charles Darwin
B)  Louis Pasteur
C)  Svante Arrenhius
D)  Stanley Miller
E)  Lynn MargulisF) B) and D)
G) A) and B)

Question 2

Which of the following were found in the Cambrian seas?

Accepted Answer

A)  Red and green algae
B)  Sponges and jellyfish
C)  Trilobites and nautiloids
D)  Mollusks and worms
E)  All are correctF) A) and B)
G) None of the above

Question 3

Chromosome 2 in Homo sapiens formed when two smaller chromosomes fused,after the chimpanzee and human lineages split.As a result,humans have 23 pairs of chromosomes and chimpanzees have 24 and can no longer form fertile offspring (Fig.14.31) .This would be an example of:

Accepted Answer

A)  Gradualism
B)  Natural selection
C)  Artificial selection
D)  Punctuated equilibrium
E)  FertilizationF) A) and E)
G) None of the above

Question 4

It is thought that the first cells probably arose about:

Accepted Answer

A)  500 million years ago
B)  1.2 billion years ago
C)  Two billion years ago
D)  Six billion years ago
E)  3.5 billion years agoF) A) and E)
G) C) and E)

Question 5

The three groups in the primate lineage are:

Accepted Answer

A)  Monkeys, gibbons, and orangutans
B)  Gorillas, bonobos, and chimpanzees
C)  Prosimians, simians, and hominoids
D)  Chimpanzees, gorillas, and humans
E)  Hominines, hominids, and hominoidsF) C) and E)
G) C) and D)

Question 6

The "endosymbiotic theory" states that eukaryotic cells work together to form a multicellular organism.

Accepted Answer

A) True 
 B)False

Question 7

Characteristics shared by primates include:

Accepted Answer

A)  Flat nails instead of claws
B)  Grasping hands with opposable thumbs
C)  Stereoscopic vision and excellent depth perception
D)  Large brain size in comparison to body size
E)  All are correctF) A) and C)
G) B) and C)

Question 8

How is the ability of phospholipids to spontaneously form membranes when placed in water important in the origin of life on Earth?

Accepted Answer

A)  Membranes are used by cells to catalyze reactions
B)  Membranes are used by cells to store genetic information
C)  Membranes protect a cell from high temperatures and pressures in the environment
D)  Membranes are used by cells to isolate their contents from the environment
E)  Membranes protect a cell for gasses in the atmosphereF) C) and E)
G) None of the above

Question 9

The first amphibians appeared during the:

Accepted Answer

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

Question 10

The transcription factor FOXP2 has two mutations in humans that are not found in chimps.This transcription factor regulates the expression of genes that allow humans to speak.This is consistent with which hypothesis to account for the differences between humans and chimps?

Accepted Answer

A)  After the divergence of chimps and humans, changes in the human lineage caused some genes to stop working.
B)  Human and chimp proteins are essentially the same, but are turned on and off at different times.
C)  Humans and chimps do not share many genes in common.
D)  Most differences between human and chimp DNA sequences are in the regions that code for proteins.
E)  Humans are more evolved than chimps.F) All of the above
G) D) and E)

Question 11

Which scientist,using S-shaped curved open-necked flasks to keep out bacteria but allow air and the "vital principle" in,helped disprove the theory of spontaneous generation?

Accepted Answer

A)  Louis Pasteur
B)  Francesco Redi
C)  Lazzaro Spallanzani
D)  Charles Darwin
E)  Svante ArrheniusF) B) and C)
G) A) and E)

Question 12

Small animals called thecodonts and therapsids were the primary forms of animal life at the beginning of the:

Accepted Answer

A)  Devonian period
B)  Jurassic period
C)  Permian period
D)  Triassic period
E)  Cretaceous periodF) A) and E)
G) None of the above

Question 13

The first vertebrates to leave fossil evidence,jawless fishes appeared during this time:

Accepted Answer

A)  Cambrian period
B)  Ordovician period
C)  Silurian period
D)  Devonian period
E)  Carboniferous periodF) None of the above
G) C) and D)

Question 14

Which of the following is not a similarity supporting the endosymbiont theory?

Accepted Answer

A)  Similarity in the DNA of mitochondria and prokaryotes
B)  Similarity in the lysosomes of prokaryotes and mitochondria
C)  Similarity in the RNA of mitochondria and prokaryotes
D)  Similarity in the ribosomes of mitochondria and prokaryotes
E)  All of these support the endosymbiont theoryF) C) and E)
G) A) and B)

Question 15

The Mesozoic era lasted from about:

Accepted Answer

A)  65 million years ago to 2 million years ago
B)  500 million years ago to 250 million years ago
C)  250 million years ago to 65 million years ago
D)  540 million years ago to 250 million years ago
E)  One billion years ago to 500 million years agoF) D) and E)
G) B) and E)

Question 16

It is thought that eukaryotes probably originated about:

Accepted Answer

A)  Four billion years ago
B)  Two billion years ago
C)  Four million years ago
D)  Three billion years ago
E)  Three million years agoF) C) and D)
G) C) and E)

Question 17

The three periods of the Mesozoic era are the Triassic,Jurassic,and Cretaceous.

Accepted Answer

A) True 
 B)False

Question 18

Which theory is used to help explain the origin of chloroplasts and mitochondria?

Accepted Answer

A)  The theory of spontaneous generation
B)  The theory of natural selection
C)  The geologic time theory
D)  The cell theory
E)  The endosymbiont theoryF) B) and D)
G) All of the above

Question 19

According to the evolutionary tree humans are descended from other groups of modern apes.

Accepted Answer

A) True 
 B)False

Question 20

Mitochondria evolved before chloroplasts based on which observation?

Accepted Answer

A)  Mitochondria produced the oxygen found in the atmosphere
B)  All organisms have mitochondria
C)  All eukaryotes have mitochondria, but not chloroplasts
D)  All prokaryotes have mitochondria, but not chloroplasts
E)  Mitochondria are larger than chloroplastsF) A) and B)
G) All of the above

Exam 14: The Origin and History of Life

It is thought that eukaryotes probably originated about:

Correct AnswerverifiedShow Answer

Small animals called thecodonts and therapsids were the primary forms of animal life at the beginning of the:

Correct AnswerverifiedShow Answer

The three groups in the primate lineage are:

Correct AnswerverifiedShow Answer

Characteristics shared by primates include:

Correct AnswerverifiedShow Answer

Which scientist,using S-shaped curved open-necked flasks to keep out bacteria but allow air and the "vital principle" in,helped disprove the theory of spontaneous generation?

Correct AnswerverifiedShow Answer

The three periods of the Mesozoic era are the Triassic,Jurassic,and Cretaceous.

Correct AnswerverifiedShow Answer

Which theory is used to help explain the origin of chloroplasts and mitochondria?

Correct AnswerverifiedShow Answer

The Mesozoic era lasted from about:

Correct AnswerverifiedShow Answer

Which of the following is not a similarity supporting the endosymbiont theory?

Correct AnswerverifiedShow Answer

According to the evolutionary tree humans are descended from other groups of modern apes.

Correct AnswerverifiedShow Answer

The "endosymbiotic theory" states that eukaryotic cells work together to form a multicellular organism.

Correct AnswerverifiedShow Answer

Which of the following were found in the Cambrian seas?

Correct AnswerverifiedShow Answer

The first vertebrates to leave fossil evidence,jawless fishes appeared during this time:

Correct AnswerverifiedShow Answer

It is thought that the first cells probably arose about:

Correct AnswerverifiedShow Answer

The transcription factor FOXP2 has two mutations in humans that are not found in chimps.This transcription factor regulates the expression of genes that allow humans to speak.This is consistent with which hypothesis to account for the differences between humans and chimps?

Correct AnswerverifiedShow Answer

Which scientist is given credit for proposing the endosymbiont theory?

Correct AnswerverifiedShow Answer

How is the ability of phospholipids to spontaneously form membranes when placed in water important in the origin of life on Earth?

Correct AnswerverifiedShow Answer

Mitochondria evolved before chloroplasts based on which observation?

Correct AnswerverifiedShow Answer

Chromosome 2 in Homo sapiens formed when two smaller chromosomes fused,after the chimpanzee and human lineages split.As a result,humans have 23 pairs of chromosomes and chimpanzees have 24 and can no longer form fertile offspring (Fig.14.31) .This would be an example of:

Correct AnswerverifiedShow Answer

The first amphibians appeared during the:

Correct AnswerverifiedShow Answer

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

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

Correct Answer
verified

Correct Answer
verified