Question 1

The "Age of Amphibians" was the:

Accepted Answer

A) Permian period 
B) Ordovician period 
C) Silurian period 
D) Devonian period 
E) Carboniferous period 
A) Permian period 
B) Ordovician period 
C) Silurian period 
D) Devonian period 
E) Carboniferous period

Question 2

How could an asteroid hitting the Yucatan peninsula in what is now Central America cause a worldwide mass extinction?

Accepted Answer

A) By blocking the sun and inhibiting photosynthesis 
B) By using up all of the oxygen in the atmosphere 
C) Most of the animals in the world were in the tropics of Central America 
D) By causing massive floods 
E) By heating up the planet 
A) By blocking the sun and inhibiting photosynthesis 
B) By using up all of the oxygen in the atmosphere 
C) Most of the animals in the world were in the tropics of Central America 
D) By causing massive floods 
E) By heating up the planet

Question 3

The amniote egg in which an embryo could develop completely on dry land arose during the:

Accepted Answer

A) Ordovician period 
B) Permian period 
C) Silurian period 
D) Cambrian period 
E) Devonian period 
A) Ordovician period 
B) Permian period 
C) Silurian period 
D) Cambrian period 
E) Devonian period

Question 4

Photosynthesis probably originated during the __________ eon and most likely used _____________ as an electron donor.

Accepted Answer

A) Proterozoic, water 
B) Archean, water 
C) Archean, hydrogen sulfide 
D) Proterozoic, hydrogen sulfide 
E) Paleozoic, water 
A) Proterozoic, water 
B) Archean, water 
C) Archean, hydrogen sulfide 
D) Proterozoic, hydrogen sulfide 
E) Paleozoic, water

Question 5

The enzyme that copies RNA into complementary DNA is RNA polymerase.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following did not occur during Precambrian time?

Accepted Answer

A) Life originated 
B) Ancestors of all modern animals appear 
C) Photosynthesis evolved 
D) O2 accumulated in the Earth's atmosphere 
E) Eukaryotes arose 
A) Life originated 
B) Ancestors of all modern animals appear 
C) Photosynthesis evolved 
D) O2 accumulated in the Earth's atmosphere 
E) Eukaryotes arose

Question 7

To determine the sequence of Clint the chimpanzee's DNA,the DNA was first:

Accepted Answer

A) Placed into bacteria 
B) Placed into a computer 
C) Cloned into a plasmid 
D) Transcribed into RNA 
E) Translated into protein 
A) Placed into bacteria 
B) Placed into a computer 
C) Cloned into a plasmid 
D) Transcribed into RNA 
E) Translated into protein

Question 8

Humans are less hairy and muscular than chimps,yet have 99% DNA sequence similarity.This is consistent with which hypothesis to account for the differences between humans and chimps?

Accepted Answer

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

Question 9

A time of great adaptive radiation for mammals occurred during the Tertiary period.

Accepted Answer

A) True 
 B)False

Question 10

Why do scientists hypothesize that RNA was the first form of genetic material?

Accepted Answer

A) RNA can catalyze reactions and store genetic information 
B) RNA can catalyze reactions 
C) RNA can store genetic information 
D) RNA can store genetic information and form membranes 
E) RNA can catalyze reactions and form membranes 
A) RNA can catalyze reactions and store genetic information 
B) RNA can catalyze reactions 
C) RNA can store genetic information 
D) RNA can store genetic information and form membranes 
E) RNA can catalyze reactions and form membranes

Question 11

By comparing the sequences of human and chimpanzee DNA sequences,scientists may be able to answer which of the following questions?

Accepted Answer

A) Which genes control the ability to speak? 
B) Which genes lead to the development of opposable thumbs? 
C) Which genes give binocular vision? 
D) Which genes lead to the development of large brains? 
E) Which genes give good visual depth perception? 
A) Which genes control the ability to speak? 
B) Which genes lead to the development of opposable thumbs? 
C) Which genes give binocular vision? 
D) Which genes lead to the development of large brains? 
E) Which genes give good visual depth perception?

Question 12

Our closest living relatives on the evolutionary tree are:

Accepted Answer

A) Gibbons 
B) Gorillas 
C) Orangutans 
D) Homo erectus 
E) Chimpanzees 
A) Gibbons 
B) Gorillas 
C) Orangutans 
D) Homo erectus 
E) Chimpanzees

Question 13

Homo sapiens first appeared during the:

Accepted Answer

A) Cretaceous period 
B) Tertiary period 
C) Permian period 
D) Mesozoic era 
E) Quaternary period 
A) Cretaceous period 
B) Tertiary period 
C) Permian period 
D) Mesozoic era 
E) Quaternary period

Question 14

Ediacaran organisms lived during the:

Accepted Answer

A) Precambrian period 
B) Cambrian period 
C) Devonian period 
D) Silurian period 
E) Jurassic period 
A) Precambrian period 
B) Cambrian period 
C) Devonian period 
D) Silurian period 
E) Jurassic period

Question 15

Evidence supporting the idea that mitochondria and chloroplasts in present-day cells originated as independent organisms includes:

Accepted Answer

A) Similarities in DNA sequences between mitochondrial and bacterial genomes 
B) Similarities in size and shape between mitochondria and some prokaryotes 
C) Similarity between photosynthetic pigments in chloroplasts and cyanobacteria 
D) Similarity in the way mitochondria, chloroplasts, and prokaryotes reproduce 
E) All of these are correct 
A) Similarities in DNA sequences between mitochondrial and bacterial genomes 
B) Similarities in size and shape between mitochondria and some prokaryotes 
C) Similarity between photosynthetic pigments in chloroplasts and cyanobacteria 
D) Similarity in the way mitochondria, chloroplasts, and prokaryotes reproduce 
E) All of these are correct

Question 16

The "Age of Fishes" was the:

Accepted Answer

A) Devonian period 
B) Ordovician period 
C) Silurian period 
D) Carboniferous period 
E) Permian period 
A) Devonian period 
B) Ordovician period 
C) Silurian period 
D) Carboniferous period 
E) Permian period

Question 17

The two major extinctions of living species occurred during the Mesozoic era.

Accepted Answer

A) True 
 B)False

Question 18

The "Cambrian explosion" refers to:

Accepted Answer

A) The mass extinction of dinosaurs 
B) The appearance of fossils for all major phyla of animals 
C) The development of the first true cell 
D) The origination of life 
E) All are correct 
A) The mass extinction of dinosaurs 
B) The appearance of fossils for all major phyla of animals 
C) The development of the first true cell 
D) The origination of life 
E) All are correct

Question 19

The mass extinctions of the Permian period:

Accepted Answer

A) Paved the way for the age of dinosaurs 
B) Was caused by a drop in sea level 
C) Was caused by a rise in global temperature 
D) Was caused by a long series of volcanic eruptions 
E) All are correct 
A) Paved the way for the age of dinosaurs 
B) Was caused by a drop in sea level 
C) Was caused by a rise in global temperature 
D) Was caused by a long series of volcanic eruptions 
E) All are correct

Question 20

The first flowering plants,first true mammals,and first true frogs appeared during the:

Accepted Answer

A) Cretaceous period 
B) Cambrian period 
C) Triassic period 
D) Jurassic period 
E) Permian period 
A) Cretaceous period 
B) Cambrian period 
C) Triassic period 
D) Jurassic period 
E) Permian period

Exam 14: The Origin and History of Life

The "Age of Amphibians" was the:

How could an asteroid hitting the Yucatan peninsula in what is now Central America cause a worldwide mass extinction?

The amniote egg in which an embryo could develop completely on dry land arose during the:

Photosynthesis probably originated during the __________ eon and most likely used _____________ as an electron donor.

The enzyme that copies RNA into complementary DNA is RNA polymerase.

Which of the following did not occur during Precambrian time?

To determine the sequence of Clint the chimpanzee's DNA,the DNA was first:

Humans are less hairy and muscular than chimps,yet have 99% DNA sequence similarity.This is consistent with which hypothesis to account for the differences between humans and chimps?

A time of great adaptive radiation for mammals occurred during the Tertiary period.

Why do scientists hypothesize that RNA was the first form of genetic material?

By comparing the sequences of human and chimpanzee DNA sequences,scientists may be able to answer which of the following questions?

Our closest living relatives on the evolutionary tree are:

Homo sapiens first appeared during the:

Ediacaran organisms lived during the:

Evidence supporting the idea that mitochondria and chloroplasts in present-day cells originated as independent organisms includes:

The "Age of Fishes" was the:

The two major extinctions of living species occurred during the Mesozoic era.

The "Cambrian explosion" refers to:

The mass extinctions of the Permian period:

The first flowering plants,first true mammals,and first true frogs appeared during the:

What Is Life

The Chemistry of Life

The Dynamic Cell

The Energy of Life

Photosynthesis

How Cells Release Energy

Dna Structure and Gene Function

Dna Replication, mitosis and the Cell Cycle

Sexual Reproduction and Meiosis

Patterns of Inheritance

The Forces of Evolutionary Change

Evidence for Evolution

Speciation and Extinction

Viruses

Bacteria and Archaea

Protists

Plants

Fungi

Animals

Plant Form and Function

Plant Nutrition and Transport

Reproduction and Development of Flowering Plants

Animal Tissues, organ Systems and Homeostasis

The Nervous System

The Senses Content

The Endocrine System

The Musculoskeletal System

The Circulatory System

The Respiratory System

Digestion and Animal Nutrition

Regulation of Temperature and Body Fluids

The Immune System

Animal Reproduction and Development

Animal Behavior

Populations

Communities and Ecosystems

The Biosphere

Conserving Biodiversity

Filters

Photosynthesis probably originated during the eon and most likely used ___ as an electron donor.