Question 1

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

Accepted Answer

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

Question 2

The first scientist to suggest that life might evolve through time was

Accepted Answer

A)  Charles Darwin 
B)  Anaximander 
C)  Jean Baptiste Lamarck 
D)  Empedocles 
A)  Charles Darwin 
B)  Anaximander 
C)  Jean Baptiste Lamarck 
D)  Empedocles

Question 3

The Bacteria Chloroflexus live in live in lakes, rivers, hot springs, and aquatic environments with very high salt contents. They obtain energy from the Sun and carbon from other bacteria. Given this, they can be classified metabolicaly as

Accepted Answer

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

Question 4

The two strands making up the double helix of DNA are said to be

Accepted Answer

A)  paired 
B)  corresponding 
C)  matching 
D)  complementary 
A)  paired 
B)  corresponding 
C)  matching 
D)  complementary

Question 5

The basic requirement for metabolism inside cells is

Accepted Answer

A)  a source of carbon and a source of energy 
B)  a source of carbon only 
C)  a source of energy only 
D)  the presence of ATP 
A)  a source of carbon and a source of energy 
B)  a source of carbon only 
C)  a source of energy only 
D)  the presence of ATP

Question 6

The organisms in which domains of life are unicellular or multicellular?

Accepted Answer

A)  bacteria only 
B)  bacteria and archaea 
C)  archaea and eukarya 
D)  eukarya only 
A)  bacteria only 
B)  bacteria and archaea 
C)  archaea and eukarya 
D)  eukarya only

Question 7

Human beings are examples of

Accepted Answer

A)  multicellular eukaryotes 
B)  unicellular prokaryotes 
C)  unicellular eukaryotes 
D)  multicellular prokaryotes 
A)  multicellular eukaryotes 
B)  unicellular prokaryotes 
C)  unicellular eukaryotes 
D)  multicellular prokaryotes

Question 8

A chemoautotroph gets its energy from

Accepted Answer

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

Question 9

The tree of life

Accepted Answer

A)  traces back the evolution of all mammals to a common ancestor 
B)  classifies organisms according to their physical appearance 
C)  illustrates the biochemical and genetic relationships between the different domains of life 
D)  is a name for the first organism from which all life originated 
A)  traces back the evolution of all mammals to a common ancestor 
B)  classifies organisms according to their physical appearance 
C)  illustrates the biochemical and genetic relationships between the different domains of life 
D)  is a name for the first organism from which all life originated

Question 10

Organisms that can survive at very low temperatures are referred to as

Accepted Answer

A)  frostophiles 
B)  freezophiles 
C)  hypothermaphiles 
D)  psychrophiles 
A)  frostophiles 
B)  freezophiles 
C)  hypothermaphiles 
D)  psychrophiles

Question 11

The "words" that make up the genetic code contain how many letters?

Accepted Answer

A)  4 
B)  20 
C)  5 
D)  3 
A)  4 
B)  20 
C)  5 
D)  3

Question 12

Traits passed from parents to offspring are referred to by biologists as

Accepted Answer

A)  inheritance 
B)  heredity 
C)  adaptation 
D)  heraldry 
A)  inheritance 
B)  heredity 
C)  adaptation 
D)  heraldry

Question 13

Bacteria are examples of

Accepted Answer

A)  unicellular prokaryotes 
B)  unicellular eukaryotes 
C)  multicellular eukaryotes 
D)  multicellular prokaryotes 
A)  unicellular prokaryotes 
B)  unicellular eukaryotes 
C)  multicellular eukaryotes 
D)  multicellular prokaryotes

Question 14

Humans are scientifically classified as Homo sapiens. In this system, the word Homo refers to the

Accepted Answer

A)  family 
B)  genus 
C)  order 
D)  species 
A)  family 
B)  genus 
C)  order 
D)  species

Question 15

The most abundant element in the human body is

Accepted Answer

A)  nitrogen 
B)  hydrogen 
C)  carbon 
D)  oxygen 
A)  nitrogen 
B)  hydrogen 
C)  carbon 
D)  oxygen

Question 16

The bond between carbon atoms in the molecule ethane, H3C-CH3 is referred to as

Accepted Answer

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

Question 17

In the tree of life

Accepted Answer

A)  animals are members of the domain eukarya, while plants are members of the domain archaea 
B)  animals are members of the domain archaea, while plants are members of the domain eukarya 
C)  both plants and animals are members of the domain archaea 
D)  both plants and animals are members of the domain eukarya 
A)  animals are members of the domain eukarya, while plants are members of the domain archaea 
B)  animals are members of the domain archaea, while plants are members of the domain eukarya 
C)  both plants and animals are members of the domain archaea 
D)  both plants and animals are members of the domain eukarya

Question 18

The bond between carbon atoms in the molecule acetylene, HCCH 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

A section of DNA that corresponds to a particular protein is known as a

Accepted Answer

A)  codon 
B)  chromosome 
C)  gene 
D)  genome 
A)  codon 
B)  chromosome 
C)  gene 
D)  genome

Question 20

More than 96% of the mass of living cells are made of

Accepted Answer

A)  carbon and hydrogen 
B)  carbon 
C)  carbon, hydrogen, oxygen, and nitrogen 
D)  hydrogen and oxygen 
A)  carbon and hydrogen 
B)  carbon 
C)  carbon, hydrogen, oxygen, and nitrogen 
D)  hydrogen and oxygen

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

The first scientist to suggest that life might evolve through time was

The Bacteria Chloroflexus live in live in lakes, rivers, hot springs, and aquatic environments with very high salt contents. They obtain energy from the Sun and carbon from other bacteria. Given this, they can be classified metabolicaly as

The two strands making up the double helix of DNA are said to be

The basic requirement for metabolism inside cells is

The organisms in which domains of life are unicellular or multicellular?

Human beings are examples of

A chemoautotroph gets its energy from

The tree of life

Organisms that can survive at very low temperatures are referred to as

The "words" that make up the genetic code contain how many letters?

Traits passed from parents to offspring are referred to by biologists as

Bacteria are examples of

Humans are scientifically classified as Homo sapiens. In this system, the word Homo refers to the

The most abundant element in the human body is

The bond between carbon atoms in the molecule ethane, H₃C-CH₃ is referred to as

In the tree of life

The bond between carbon atoms in the molecule acetylene, HCCH is referred to as

A section of DNA that corresponds to a particular protein is known as a

More than 96% of the mass of living cells are made of

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

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

The first scientist to suggest that life might evolve through time was

The Bacteria Chloroflexus live in live in lakes, rivers, hot springs, and aquatic environments with very high salt contents. They obtain energy from the Sun and carbon from other bacteria. Given this, they can be classified metabolicaly as

The two strands making up the double helix of DNA are said to be

The basic requirement for metabolism inside cells is

The organisms in which domains of life are unicellular or multicellular?

Human beings are examples of

A chemoautotroph gets its energy from

The tree of life

Organisms that can survive at very low temperatures are referred to as

The "words" that make up the genetic code contain how many letters?

Traits passed from parents to offspring are referred to by biologists as

Bacteria are examples of

Humans are scientifically classified as Homo sapiens. In this system, the word Homo refers to the

The most abundant element in the human body is

The bond between carbon atoms in the molecule ethane, H3C-CH3 is referred to as

In the tree of life

The bond between carbon atoms in the molecule acetylene, HCCH is referred to as

A section of DNA that corresponds to a particular protein is known as a

More than 96% of the mass of living cells are made of

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 ethane, H₃C-CH₃ is referred to as