Question 1

Plants get their energy directly from the Sun and their carbon from the atmosphere. Given this, they can be classified metabolically as

Accepted Answer

A)  photoheterotrophs 
B)  chemoheterotrophs 
C)  chemoautotrophs 
D)  photoautotrophs 
A)  photoheterotrophs 
B)  chemoheterotrophs 
C)  chemoautotrophs 
D)  photoautotrophs

Question 2

Energy utilization in living organisms is

Accepted Answer

A)  one of the most basic requirements of life, without which organisms could not maintain order, grow, and reproduce 
B)  only important for organisms like plants which receive their energy directly from the Sun 
C)  neither a necessary nor a sufficient condition for life 
D)  not important for organisms that have adapted to survive extremely low temperatures (psychrophiles) 
A)  one of the most basic requirements of life, without which organisms could not maintain order, grow, and reproduce 
B)  only important for organisms like plants which receive their energy directly from the Sun 
C)  neither a necessary nor a sufficient condition for life 
D)  not important for organisms that have adapted to survive extremely low temperatures (psychrophiles)

Question 3

A genus is

Accepted Answer

A)  a group of species that are closely related to one another 
B)  a group of species that are particularly intelligent 
C)  a group of organisms that look similar 
D)  groups of organisms that are genetically distinct 
A)  a group of species that are closely related to one another 
B)  a group of species that are particularly intelligent 
C)  a group of organisms that look similar 
D)  groups of organisms that are genetically distinct

Question 4

The process of converting a sequence of nucleotides in RNA into a protein is called

Accepted Answer

A)  translation 
B)  transformation 
C)  transcription 
D)  encryption 
A)  translation 
B)  transformation 
C)  transcription 
D)  encryption

Question 5

Life on Earth can use a variety of different carbon and energy sources. However, the one thing that no organism on Earth can survive without is

Accepted Answer

A)  water in any form: solid, liquid, or gas 
B)  oxygen 
C)  a liquid solvent of any kind 
D)  liquid water 
A)  water in any form: solid, liquid, or gas 
B)  oxygen 
C)  a liquid solvent of any kind 
D)  liquid water

Question 6

The most numerous lifeforms on Earth are

Accepted Answer

A)  insects 
B)  plants 
C)  human beings 
D)  microbes 
A)  insects 
B)  plants 
C)  human beings 
D)  microbes

Question 7

Enzymes are examples of

Accepted Answer

A)  lipids 
B)  nucleic acids 
C)  carbohydrates 
D)  proteins 
A)  lipids 
B)  nucleic acids 
C)  carbohydrates 
D)  proteins

Question 8

What is the complementary sequence corresponding to the DNA fragment GATACA?

Accepted Answer

A)  AGCGTG 
B)  TGCCAC 
C)  CTATGT 
D)  ACATAG 
A)  AGCGTG 
B)  TGCCAC 
C)  CTATGT 
D)  ACATAG

Question 9

The organisms Homo habilis, Homo erectus, and Homo sapiens

Accepted Answer

A)  are part of the same genus 
B)  have nothing in common 
C)  are part of the same genus and species 
D)  are part of the same species 
A)  are part of the same genus 
B)  have nothing in common 
C)  are part of the same genus and species 
D)  are part of the same species

Question 10

All living cells use the molecule adenosine triphosphate (ATP)

Accepted Answer

A)  to carry oxygen into cells 
B)  to catalyze biochemical reactions 
C)  as a building block for nucleic acids 
D)  to store and release energy for biochemical processes 
A)  to carry oxygen into cells 
B)  to catalyze biochemical reactions 
C)  as a building block for nucleic acids 
D)  to store and release energy for biochemical processes

Question 11

At the root of the tree of life

Accepted Answer

A)  is the common ancestor of all life on Earth 
B)  is the common ancestor of all mammals 
C)  are viruses 
D)  are human beings 
A)  is the common ancestor of all life on Earth 
B)  is the common ancestor of all mammals 
C)  are viruses 
D)  are human beings

Question 12

The discovery of extremophiles on Earth suggests that

Accepted Answer

A)  life elsewhere will only be found under conditions that are similar to those of Earth 
B)  life elsewhere will only be possible over a much narrower range of conditions than initially thought 
C)  life elsewhere may be possible over a much wider range of conditions than initially thought 
D)  extraterrestrial life will exist only under extreme conditions 
A)  life elsewhere will only be found under conditions that are similar to those of Earth 
B)  life elsewhere will only be possible over a much narrower range of conditions than initially thought 
C)  life elsewhere may be possible over a much wider range of conditions than initially thought 
D)  extraterrestrial life will exist only under extreme conditions

Question 13

What can be said about the presence of order in living organisms?

Accepted Answer

A)  it is a necessary condition, but not a sufficient condition for life 
B)  it is a sufficient condition, but not a necessary condition for life 
C)  it is both a necessary condition and a sufficient condition for life 
D)  it is neither a necessary condition nor a sufficient condition for life 
A)  it is a necessary condition, but not a sufficient condition for life 
B)  it is a sufficient condition, but not a necessary condition for life 
C)  it is both a necessary condition and a sufficient condition for life 
D)  it is neither a necessary condition nor a sufficient condition for life

Question 14

A photoautotroph gets its energy from

Accepted Answer

A)  the Sun and its carbon from other organisms 
B)  chemical reactions and its carbon from other organisms 
C)  chemical reactions and its carbon from its environment 
D)  the Sun and its carbon from its environment 
A)  the Sun and its carbon from other organisms 
B)  chemical reactions and its carbon from other organisms 
C)  chemical reactions and its carbon from its environment 
D)  the Sun and its carbon from its environment

Question 15

What is the main factor that drives Darwinian evolution?

Accepted Answer

A)  the competition for finite resources 
B)  the need to have sex 
C)  the ability of an organism to harness the energy of the Sun 
D)  the size of an organism 
A)  the competition for finite resources 
B)  the need to have sex 
C)  the ability of an organism to harness the energy of the Sun 
D)  the size of an organism

Question 16

What is the MOST important role that nucleic acids play in living organisms on Earth?

Accepted Answer

A)  long-term energy storage and cell membranes 
B)  basic functioning of living organisms 
C)  the storage and transfer of information 
D)  short-term energy storage and cell structure 
A)  long-term energy storage and cell membranes 
B)  basic functioning of living organisms 
C)  the storage and transfer of information 
D)  short-term energy storage and cell structure

Question 17

Branch lengths in the tree of life are a measure of the

Accepted Answer

A)  rate of evolution between different species 
B)  size difference between species 
C)  life expectancy difference between species 
D)  amount of genetic difference between different species 
A)  rate of evolution between different species 
B)  size difference between species 
C)  life expectancy difference between species 
D)  amount of genetic difference between different species

Question 18

The type of reproduction that occurs between human beings is referred to as

Accepted Answer

A)  unsexual 
B)  kinky 
C)  asexual 
D)  sexual 
A)  unsexual 
B)  kinky 
C)  asexual 
D)  sexual

Question 19

Scientists cannot agree on whether viruses are living or not because

Accepted Answer

A)  they are much smaller than other simple living organisms 
B)  they can reproduce but do not require any utilization of energy to do so 
C)  they can only reproduce within a host cell and not independently 
D)  under certain conditions they can reproduce, but they do not contain any DNA 
A)  they are much smaller than other simple living organisms 
B)  they can reproduce but do not require any utilization of energy to do so 
C)  they can only reproduce within a host cell and not independently 
D)  under certain conditions they can reproduce, but they do not contain any DNA

Question 20

Human beings obtain energy from chemical reactions and carbon from other organisms. Given this, they can be classified metabollically as

Accepted Answer

A)  photoheterotrophs 
B)  chemoheterotrophs 
C)  chemoautotrophs 
D)  photoautotrophs 
A)  photoheterotrophs 
B)  chemoheterotrophs 
C)  chemoautotrophs 
D)  photoautotrophs

Plants get their energy directly from the Sun and their carbon from the atmosphere. Given this, they can be classified metabolically as

Energy utilization in living organisms is

A genus is

The process of converting a sequence of nucleotides in RNA into a protein is called

Life on Earth can use a variety of different carbon and energy sources. However, the one thing that no organism on Earth can survive without is

The most numerous lifeforms on Earth are

Enzymes are examples of

What is the complementary sequence corresponding to the DNA fragment GATACA?

The organisms Homo habilis, Homo erectus, and Homo sapiens

All living cells use the molecule adenosine triphosphate (ATP)

At the root of the tree of life

The discovery of extremophiles on Earth suggests that

What can be said about the presence of order in living organisms?

A photoautotroph gets its energy from

What is the main factor that drives Darwinian evolution?

What is the MOST important role that nucleic acids play in living organisms on Earth?

Branch lengths in the tree of life are a measure of the

The type of reproduction that occurs between human beings is referred to as

Scientists cannot agree on whether viruses are living or not because

Human beings obtain energy from chemical reactions and carbon from other organisms. Given this, they can be classified metabollically as

The Science of Life in the Universe

The Universal Context of Life

The Habitability of Earth

The Origin and Evolution of Life on Earth

Searching for Life in Our Solar System

Mars

Life on Jovian Moons

The Nature and Evolution of Habitability

Habitability Outside the Solar System

The Search for Extraterrestrial Intelligence

Interstellar Travel and the Fermi Paradox

Filters

Exam 5: The Nature of Life on Earth

Plants get their energy directly from the Sun and their carbon from the atmosphere. Given this, they can be classified metabolically as

Energy utilization in living organisms is

A genus is

The process of converting a sequence of nucleotides in RNA into a protein is called

Life on Earth can use a variety of different carbon and energy sources. However, the one thing that no organism on Earth can survive without is

The most numerous lifeforms on Earth are

Enzymes are examples of

What is the complementary sequence corresponding to the DNA fragment GATACA?

The organisms Homo habilis, Homo erectus, and Homo sapiens

All living cells use the molecule adenosine triphosphate (ATP)

At the root of the tree of life

The discovery of extremophiles on Earth suggests that

What can be said about the presence of order in living organisms?

A photoautotroph gets its energy from

What is the main factor that drives Darwinian evolution?

What is the MOST important role that nucleic acids play in living organisms on Earth?

Branch lengths in the tree of life are a measure of the

The type of reproduction that occurs between human beings is referred to as

Scientists cannot agree on whether viruses are living or not because

Human beings obtain energy from chemical reactions and carbon from other organisms. Given this, they can be classified metabollically as

The Science of Life in the Universe

The Universal Context of Life

The Habitability of Earth

The Origin and Evolution of Life on Earth

Searching for Life in Our Solar System

Mars

Life on Jovian Moons

The Nature and Evolution of Habitability

Habitability Outside the Solar System

The Search for Extraterrestrial Intelligence

Interstellar Travel and the Fermi Paradox

Filters