Question 1

What are believed to have been the best places for life to have formed on Earth?

Accepted Answer

A) near the south pole, on the ice 
B) on the continent of Africa, in the areas with no water 
C) in liquid water, probably in the oceans or pools of water 
D) in volcanoes, where lots of energy was available 
A) near the south pole, on the ice 
B) on the continent of Africa, in the areas with no water 
C) in liquid water, probably in the oceans or pools of water 
D) in volcanoes, where lots of energy was available

Question 2

What part of the radio spectrum is thought most likely to be successful for communication with other civilizations? Why?

Accepted Answer

The answer of What part of the radio spectrum is...

Question 3

What would scientists say is the best reason to disbelieve UFO reports?

Accepted Answer

A) Interstellar travel requires huge amounts of time and energy 
B) There is no evidence that life exists elsewhere in the universe. 
C) No scientist has ever seen a UFO. 
D) Scientists believe that any alien civilization would be much more advanced than humans. 
A) Interstellar travel requires huge amounts of time and energy 
B) There is no evidence that life exists elsewhere in the universe. 
C) No scientist has ever seen a UFO. 
D) Scientists believe that any alien civilization would be much more advanced than humans.

Question 4

The oldest easily identifiable fossils appear in sedimentary rocks that formed 3.4 billion years ago during the ____________________ period.

Accepted Answer

The answer of The oldest easily identifiable fossils appear in...

Question 5

If you uncoiled and stretched out all of the DNA molecules in a typical human,what would their total length be?

Accepted Answer

A) about 1 kilometre 
B) about 600 kilometres 
C) about 1 astronomical unit 
D) about 600 astronomical units 
A) about 1 kilometre 
B) about 600 kilometres 
C) about 1 astronomical unit 
D) about 600 astronomical units

Question 6

If life is to develop on a planet,the planet must lie well inside the inner edge of its star's habitable zone.

Accepted Answer

A) True 
 B)False

Question 7

What do DNA molecules contain the patterns for?

Accepted Answer

A) amino acids 
B) proteins 
C) phosphates and sugars 
D) four kinds of bases 
A) amino acids 
B) proteins 
C) phosphates and sugars 
D) four kinds of bases

Question 8

What is "the habitable zone"?

Accepted Answer

A) the region on a planet where conditions are acceptable for life to exist 
B) a region around a star at a distance where a planet's temperature would permit the existence of liquid water 
C) a region only found around G and K stars 
D) a region on a young planet at a temperature where amino acids can begin to form DNA molecules 
A) the region on a planet where conditions are acceptable for life to exist 
B) a region around a star at a distance where a planet's temperature would permit the existence of liquid water 
C) a region only found around G and K stars 
D) a region on a young planet at a temperature where amino acids can begin to form DNA molecules

Question 9

Suppose you wanted to use your radio telescope to search for signals from alien civilizations.Which stars would be the best targets?

Accepted Answer

A) Nearby stars, because signals would travel to us in the shortest time. 
B) Luminous stars, because they are the easiest to find in the sky. 
C) Low-mass stars, because they are more likely to be old. 
D) Binary stars, because the chances of habitable planets are twice as high. 
A) Nearby stars, because signals would travel to us in the shortest time. 
B) Luminous stars, because they are the easiest to find in the sky. 
C) Low-mass stars, because they are more likely to be old. 
D) Binary stars, because the chances of habitable planets are twice as high.

Question 10

The oldest fossils on Earth are more than 3 billion years old.

Accepted Answer

A) True 
 B)False

Question 11

What did Butler mean when he said,"The chicken is the egg's way of making another egg"?

Accepted Answer

When Butler said, "The chicken is the eg

Question 12

Why must the information in a species' DNA be changeable?

Accepted Answer

The information in a species' DNA must b

Question 13

What shows that the building blocks of life form naturally under a wide range of circumstances?

Accepted Answer

A) the Miller experiment 
B) the Chicxulub event 
C) the earliest fossils 
D) the Drake equation 
A) the Miller experiment 
B) the Chicxulub event 
C) the earliest fossils 
D) the Drake equation

Question 14

How can we select stars with planets that are likely homes for life?

Accepted Answer

Selecting stars with planets that are li

Question 15

What molecule in the cell nucleus stores the information to make specific proteins out in the cell body?

Accepted Answer

A) an enzyme 
B) DNA 
C) RNA 
D) ALH84001 
A) an enzyme 
B) DNA 
C) RNA 
D) ALH84001

Question 16

What did the Miller experiment create?

Accepted Answer

A) artificial proteins 
B) amino acids 
C) simple mould 
D) DNA 
A) artificial proteins 
B) amino acids 
C) simple mould 
D) DNA

Question 17

DNA molecules cannot be altered by chance errors in reproduction.

Accepted Answer

A) True 
 B)False

Question 18

How does the likelihood of the survival of technological societies restrict the number of civilizations that we might communicate with?

Accepted Answer

The likelihood of the survival of techno

Question 19

What is ALH84001,and why is it significant to discussions of the evolution of life?

Accepted Answer

The answer of What is ALH84001,and why is it significant...

Question 20

What is ALH 84001?

Accepted Answer

A) It is a meteorite that some scientists think shows evidence for life evolving on Mars. 
B) It is the compound used by Miller to begin his experiment to produce amino acids. 
C) It is the molecule that controls the reproduction of DNA within a cell. 
D) It is the molecule that acts as DNA's messenger to assemble proteins from amino acids. 
A) It is a meteorite that some scientists think shows evidence for life evolving on Mars. 
B) It is the compound used by Miller to begin his experiment to produce amino acids. 
C) It is the molecule that controls the reproduction of DNA within a cell. 
D) It is the molecule that acts as DNA's messenger to assemble proteins from amino acids.

What are believed to have been the best places for life to have formed on Earth?

What part of the radio spectrum is thought most likely to be successful for communication with other civilizations? Why?

What would scientists say is the best reason to disbelieve UFO reports?

The oldest easily identifiable fossils appear in sedimentary rocks that formed 3.4 billion years ago during the ____________________ period.

If you uncoiled and stretched out all of the DNA molecules in a typical human,what would their total length be?

If life is to develop on a planet,the planet must lie well inside the inner edge of its star's habitable zone.

What do DNA molecules contain the patterns for?

What is "the habitable zone"?

Suppose you wanted to use your radio telescope to search for signals from alien civilizations.Which stars would be the best targets?

The oldest fossils on Earth are more than 3 billion years old.

What did Butler mean when he said,"The chicken is the egg's way of making another egg"?

Why must the information in a species' DNA be changeable?

What shows that the building blocks of life form naturally under a wide range of circumstances?

How can we select stars with planets that are likely homes for life?

What molecule in the cell nucleus stores the information to make specific proteins out in the cell body?

What did the Miller experiment create?

DNA molecules cannot be altered by chance errors in reproduction.

How does the likelihood of the survival of technological societies restrict the number of civilizations that we might communicate with?

What is ALH84001,and why is it significant to discussions of the evolution of life?

What is ALH 84001?

The Scale of the Cosmos

User's Guide to the Sky

The Origin of Modern Astronomy

Astronomical Telescopes and Instruments

Sun Light and Sun Atoms

The Family of Stars

The Structure and Formation of Stars

The Deaths of Stars

The Milky Way Galaxy

Galaxies

Cosmology in the 21st Century

The Origin of the Solar System

Comparative Planetology of the Terrestrial Planets

Comparative Planetology of the Jovian Planets

Filters

Exam 15: Life on Other Worlds

What are believed to have been the best places for life to have formed on Earth?

What part of the radio spectrum is thought most likely to be successful for communication with other civilizations? Why?

What would scientists say is the best reason to disbelieve UFO reports?

The oldest easily identifiable fossils appear in sedimentary rocks that formed 3.4 billion years ago during the ____________________ period.

If you uncoiled and stretched out all of the DNA molecules in a typical human,what would their total length be?

If life is to develop on a planet,the planet must lie well inside the inner edge of its star's habitable zone.

What do DNA molecules contain the patterns for?

What is "the habitable zone"?

Suppose you wanted to use your radio telescope to search for signals from alien civilizations.Which stars would be the best targets?

The oldest fossils on Earth are more than 3 billion years old.

What did Butler mean when he said,"The chicken is the egg's way of making another egg"?

Why must the information in a species' DNA be changeable?

What shows that the building blocks of life form naturally under a wide range of circumstances?

How can we select stars with planets that are likely homes for life?

What molecule in the cell nucleus stores the information to make specific proteins out in the cell body?

What did the Miller experiment create?

DNA molecules cannot be altered by chance errors in reproduction.

How does the likelihood of the survival of technological societies restrict the number of civilizations that we might communicate with?

What is ALH84001,and why is it significant to discussions of the evolution of life?

What is ALH 84001?

The Scale of the Cosmos

User's Guide to the Sky

The Origin of Modern Astronomy

Astronomical Telescopes and Instruments

Sun Light and Sun Atoms

The Family of Stars

The Structure and Formation of Stars

The Deaths of Stars

The Milky Way Galaxy

Galaxies

Cosmology in the 21st Century

The Origin of the Solar System

Comparative Planetology of the Terrestrial Planets

Comparative Planetology of the Jovian Planets

Filters