Question 1

The process by which a single cell from a living organism is used to grow an entirely new organism with an identical set of genes is referred to as

Accepted Answer

A)  replication 
B)  twinning 
C)  cloning 
D)  genetic copying 
A)  replication 
B)  twinning 
C)  cloning 
D)  genetic copying

Question 2

The resistance of bacteria to certain antibiotics is a current example of

Accepted Answer

A)  natural variety 
B)  artificial selection 
C)  un-natural selection 
D)  natural selection 
A)  natural variety 
B)  artificial selection 
C)  un-natural selection 
D)  natural selection

Question 3

A catalyst

Accepted Answer

A)  is a vital component of every chemical reaction 
B)  accelerates a chemical reaction but is not changed in the process 
C)  accelerates a chemical reaction and is thereby changed in the process 
D)  stabilizes the rate of a chemical reaction 
A)  is a vital component of every chemical reaction 
B)  accelerates a chemical reaction but is not changed in the process 
C)  accelerates a chemical reaction and is thereby changed in the process 
D)  stabilizes the rate of a chemical reaction

Question 4

Instead of thymine, RNA uses the nucleotide base

Accepted Answer

A)  guanine 
B)  uracil 
C)  adenine 
D)  cytosine 
A)  guanine 
B)  uracil 
C)  adenine 
D)  cytosine

Question 5

Organisms that are found living close to volcanic vents on the ocean floor are referred to as

Accepted Answer

A)  calorophiles 
B)  hypothermaphiles 
C)  thermophiles 
D)  psychrophiles 
A)  calorophiles 
B)  hypothermaphiles 
C)  thermophiles 
D)  psychrophiles

Question 6

Perhaps the most fundamental role that enzymes play in living cells is

Accepted Answer

A)  attacking foreign bodies like bacteria and viruses 
B)  carrying oxygen across cell membranes 
C)  facilitating the replication of DNA and the reading of the genetic code 
D)  the breaking down of more complex molecules 
A)  attacking foreign bodies like bacteria and viruses 
B)  carrying oxygen across cell membranes 
C)  facilitating the replication of DNA and the reading of the genetic code 
D)  the breaking down of more complex molecules

Question 7

Chemically based extraterrestrial life

Accepted Answer

A)  will not need to store information 
B)  may not use DNA to store information but will very likely use a molecule with a similar function 
C)  will certainly use DNA to store information, but with different nucleotides 
D)  will certainly use DNA to store information 
A)  will not need to store information 
B)  may not use DNA to store information but will very likely use a molecule with a similar function 
C)  will certainly use DNA to store information, but with different nucleotides 
D)  will certainly use DNA to store information

Question 8

Metabolism is a term that describes the

Accepted Answer

A)  breaking down of complex organic molecules by bacteria 
B)  rate at which molecules travel across cell membranes 
C)  chemical processes that occur inside cells 
D)  rate of cell division of bacteria 
A)  breaking down of complex organic molecules by bacteria 
B)  rate at which molecules travel across cell membranes 
C)  chemical processes that occur inside cells 
D)  rate of cell division of bacteria

Question 9

Emperor penguins are part of the species forsteri and genus aptenodytes. Given this, their scientific classification would be written

Accepted Answer

A)  Aptenodytes Forsteri 
B)  forsteri Aptenodytes 
C)  Forsteri aptenodytes 
D)  Aptenodytes forsteri 
A)  Aptenodytes Forsteri 
B)  forsteri Aptenodytes 
C)  Forsteri aptenodytes 
D)  Aptenodytes forsteri

Question 10

The Archaea Sulfolobus live in volcanic hot springs where they obtain energy from chemical reactions and carbon from their environment. Given this, they can be classified metabolically as

Accepted Answer

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

Question 11

Which is NOT a reason that silicon is unsuitable as a building block for life compared to carbon?

Accepted Answer

A)  silicon-silicon bonds are much weaker than carbon-carbon bonds 
B)  silicon does not form multiple bonds with itself, limiting the complexity of molecules it can form 
C)  silicon does not bond with many other elements 
D)  silicon dioxide is a high melting point solid and, hence, cannot be used to transfer silicon atoms like gaseous carbon dioxide can be used to transport carbon atoms 
A)  silicon-silicon bonds are much weaker than carbon-carbon bonds 
B)  silicon does not form multiple bonds with itself, limiting the complexity of molecules it can form 
C)  silicon does not bond with many other elements 
D)  silicon dioxide is a high melting point solid and, hence, cannot be used to transfer silicon atoms like gaseous carbon dioxide can be used to transport carbon atoms

Question 12

Amino acids exhibit the property of

Accepted Answer

A)  handedness 
B)  chemical inertness 
C)  magnetism 
D)  bioluminescence 
A)  handedness 
B)  chemical inertness 
C)  magnetism 
D)  bioluminescence

Question 13

All organisms have finite lifetimes and must eventually die. Which of the basic characteristics of life corrects for this?

Accepted Answer

A)  energy utilization 
B)  response to the environment 
C)  evolutionary adaptation 
D)  reproduction 
A)  energy utilization 
B)  response to the environment 
C)  evolutionary adaptation 
D)  reproduction

Question 14

What is the maximum number of other atoms that carbon can bond to?

Accepted Answer

A)  4 
B)  2 
C)  3 
D)  1 
A)  4 
B)  2 
C)  3 
D)  1

Question 15

Cells that lack a nucleus are called

Accepted Answer

A)  prokaryotes 
B)  eukaryotes 
C)  non-nucleotes 
D)  karyokes 
A)  prokaryotes 
B)  eukaryotes 
C)  non-nucleotes 
D)  karyokes

Question 16

Which domains of life are most closely related to each other?

Accepted Answer

A)  eukarya and archaea 
B)  all three are closely related 
C)  bacteria and eukarya 
D)  bacteria and archaea 
A)  eukarya and archaea 
B)  all three are closely related 
C)  bacteria and eukarya 
D)  bacteria and archaea

Question 17

A photoheterotroph gets its energy from

Accepted Answer

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

Question 18

The bond between carbon atoms in the molecule ethylene, H2C=CH2 is referred to as

Accepted Answer

A)  an ionic bond 
B)  a double bond 
C)  a single bond 
D)  a triple bond 
A)  an ionic bond 
B)  a double bond 
C)  a single bond 
D)  a triple bond

Question 19

Bacteria reproduce by the process of cell division. This kind of reproduction is referred to as

Accepted Answer

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

Question 20

Which of the following observations is consistent with the hypothesis that all life on Earth has a common ancestor?

Accepted Answer

A)  different organisms use the same set of amino acids 
B)  different organisms use different sets of amino acids 
C)  all proteins are made of amino acids 
D)  some organisms don't use amino acids at all 
A)  different organisms use the same set of amino acids 
B)  different organisms use different sets of amino acids 
C)  all proteins are made of amino acids 
D)  some organisms don't use amino acids at all

The process by which a single cell from a living organism is used to grow an entirely new organism with an identical set of genes is referred to as

The resistance of bacteria to certain antibiotics is a current example of

A catalyst

Instead of thymine, RNA uses the nucleotide base

Organisms that are found living close to volcanic vents on the ocean floor are referred to as

Perhaps the most fundamental role that enzymes play in living cells is

Chemically based extraterrestrial life

Metabolism is a term that describes the

Emperor penguins are part of the species forsteri and genus aptenodytes. Given this, their scientific classification would be written

The Archaea Sulfolobus live in volcanic hot springs where they obtain energy from chemical reactions and carbon from their environment. Given this, they can be classified metabolically as

Which is NOT a reason that silicon is unsuitable as a building block for life compared to carbon?

Amino acids exhibit the property of

All organisms have finite lifetimes and must eventually die. Which of the basic characteristics of life corrects for this?

What is the maximum number of other atoms that carbon can bond to?

Cells that lack a nucleus are called

Which domains of life are most closely related to each other?

A photoheterotroph gets its energy from

The bond between carbon atoms in the molecule ethylene, H₂C=CH₂ is referred to as

Bacteria reproduce by the process of cell division. This kind of reproduction is referred to as

Which of the following observations is consistent with the hypothesis that all life on Earth has a common ancestor?

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

The process by which a single cell from a living organism is used to grow an entirely new organism with an identical set of genes is referred to as

The resistance of bacteria to certain antibiotics is a current example of

A catalyst

Instead of thymine, RNA uses the nucleotide base

Organisms that are found living close to volcanic vents on the ocean floor are referred to as

Perhaps the most fundamental role that enzymes play in living cells is

Chemically based extraterrestrial life

Metabolism is a term that describes the

Emperor penguins are part of the species forsteri and genus aptenodytes. Given this, their scientific classification would be written

The Archaea Sulfolobus live in volcanic hot springs where they obtain energy from chemical reactions and carbon from their environment. Given this, they can be classified metabolically as

Which is NOT a reason that silicon is unsuitable as a building block for life compared to carbon?

Amino acids exhibit the property of

All organisms have finite lifetimes and must eventually die. Which of the basic characteristics of life corrects for this?

What is the maximum number of other atoms that carbon can bond to?

Cells that lack a nucleus are called

Which domains of life are most closely related to each other?

A photoheterotroph gets its energy from

The bond between carbon atoms in the molecule ethylene, H2C=CH2 is referred to as

Bacteria reproduce by the process of cell division. This kind of reproduction is referred to as

Which of the following observations is consistent with the hypothesis that all life on Earth has a common ancestor?

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

The bond between carbon atoms in the molecule ethylene, H₂C=CH₂ is referred to as