Question 1

If life is to develop on a planet, the planet must lie well outside its star's habitable zone, where water is in its icy form.

Accepted Answer

A) True 
 B)False

Question 2

-In the Arecibo message shown above, the sky blue line leads to a sky blue letter S and its mirror image, which represent

Accepted Answer

A) RNA 
B) DNA double helix 
C) a letter of the English alphabet and the mirror effect 
D) periodic signals 
A) RNA 
B) DNA double helix 
C) a letter of the English alphabet and the mirror effect 
D) periodic signals

Question 3

Evolution is random.

Accepted Answer

A) True 
 B)False

Question 4

Astrobiology is the study of biological life on planets other than Earth.

Accepted Answer

A) True 
 B)False

Question 5

A cell's DNA molecules contain its genetic material. An offspring born with altered DNA due to radioactivity, cosmic rays, or errors in reproduction

Accepted Answer

A) is called a mutant. 
B) is called a new species. 
C) is more likely to survive than if its DNA were not altered. 
D) is no different than if its DNA were unchanged. 
E) will never be able to reproduce itself. 
A) is called a mutant. 
B) is called a new species. 
C) is more likely to survive than if its DNA were not altered. 
D) is no different than if its DNA were unchanged. 
E) will never be able to reproduce itself.

Question 6

The ____________ molecule is a long carbon-chain molecule that uses information stored in the ____________ molecule to copy the ____________ molecule.

Accepted Answer

RNA, DNA,

Question 7

The Viking landers searched for life on ____________.

Accepted Answer

The answer of The Viking landers searched for life on...

Question 8

Because of __________, ___________, and ___________, physical interstellar travel is currently impossible.

Accepted Answer

distance,

Question 9

The _____________ split lengthwise and duplicate when a cell divides.

Accepted Answer

The answer of The _____________ split lengthwise and duplicate when...

Question 10

Choose the correct terms to make the statement correct: ___Chemical/Biological__ evolution occurs before __chemical/biological____ evolution.

Accepted Answer

Chemical,

Question 11

____________ is the scientific study of the search for life on other worlds and the likelihood that life exists elsewhere.

Accepted Answer

The answer of ____________ is the scientific study of the...

Question 12

The DNA molecules contain six different bases.

Accepted Answer

A) True 
 B)False

Question 13

The Arecibo radio message to extraterrestrials contains information about the structure of DNA.

Accepted Answer

A) True 
 B)False

Question 14

The oldest fossils on Earth

Accepted Answer

A) show that life began in Africa. 
B) show that life began in lush regions between large rivers. 
C) show that life began in the oceans. 
D) are at least 5 billion years old. 
E) at most 5 million years old. 
A) show that life began in Africa. 
B) show that life began in lush regions between large rivers. 
C) show that life began in the oceans. 
D) are at least 5 billion years old. 
E) at most 5 million years old.

Question 15

-What life form first appeared on Earth at the 0 mark in the timeline above

Accepted Answer

A) dinosaurs 
B) microbial 
C) mammals 
D) humans 
A) dinosaurs 
B) microbial 
C) mammals 
D) humans

Question 16

Explain the times, periods, and events that refer to life's evolution leading to human life on Earth.

Accepted Answer

Around 4.6 billion years ago, Earth was

Question 17

How can we select stars whose planets are likely homes for life

Accepted Answer

We assume the planet must be in a stable

Question 18

The first complex multicellular life forms with appendages, etc., appeared on Earth about 0.5 billion years ago during the

Accepted Answer

A) Jurassic Period. 
B) Mississippian Period. 
C) Cambrian Period. 
D) Precambrian Period. 
E) Neolithic Period. 
A) Jurassic Period. 
B) Mississippian Period. 
C) Cambrian Period. 
D) Precambrian Period. 
E) Neolithic Period.

Question 19

What are the three properties of living things that the chapter identifies

Accepted Answer

Life is a process by which an

Question 20

-Using the above timeline, when did the Cambrian explosion occur

Accepted Answer

A) 500 million years ago 
B) 600 million years ago 
C) 540 million years ago 
D) 670 million years ago 
A) 500 million years ago 
B) 600 million years ago 
C) 540 million years ago 
D) 670 million years ago

If life is to develop on a planet, the planet must lie well outside its star's habitable zone, where water is in its icy form.

-In the Arecibo message shown above, the sky blue line leads to a sky blue letter S and its mirror image, which represent

Evolution is random.

Astrobiology is the study of biological life on planets other than Earth.

A cell's DNA molecules contain its genetic material. An offspring born with altered DNA due to radioactivity, cosmic rays, or errors in reproduction

The molecule is a long carbon-chain molecule that uses information stored in the molecule to copy the molecule.

The Viking landers searched for life on ____________.

Because of ____, _, and _______, physical interstellar travel is currently impossible.

The _____________ split lengthwise and duplicate when a cell divides.

Choose the correct terms to make the statement correct: _Chemical/Biological evolution occurs before chemical/biological__ evolution.

____________ is the scientific study of the search for life on other worlds and the likelihood that life exists elsewhere.

The DNA molecules contain six different bases.

The Arecibo radio message to extraterrestrials contains information about the structure of DNA.

The oldest fossils on Earth

-What life form first appeared on Earth at the 0 mark in the timeline above

Explain the times, periods, and events that refer to life's evolution leading to human life on Earth.

How can we select stars whose planets are likely homes for life

The first complex multicellular life forms with appendages, etc., appeared on Earth about 0.5 billion years ago during the

What are the three properties of living things that the chapter identifies

-Using the above timeline, when did the Cambrian explosion occur

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Filters

Exam 20: Astrobiology: Life on Other Worlds

If life is to develop on a planet, the planet must lie well outside its star's habitable zone, where water is in its icy form.

-In the Arecibo message shown above, the sky blue line leads to a sky blue letter S and its mirror image, which represent

Evolution is random.

Astrobiology is the study of biological life on planets other than Earth.

A cell's DNA molecules contain its genetic material. An offspring born with altered DNA due to radioactivity, cosmic rays, or errors in reproduction

The ____________ molecule is a long carbon-chain molecule that uses information stored in the ____________ molecule to copy the ____________ molecule.

The Viking landers searched for life on ____________.

Because of __________, ___________, and ___________, physical interstellar travel is currently impossible.

The _____________ split lengthwise and duplicate when a cell divides.

Choose the correct terms to make the statement correct: ___Chemical/Biological__ evolution occurs before __chemical/biological____ evolution.

____________ is the scientific study of the search for life on other worlds and the likelihood that life exists elsewhere.

The DNA molecules contain six different bases.

The Arecibo radio message to extraterrestrials contains information about the structure of DNA.

The oldest fossils on Earth

-What life form first appeared on Earth at the 0 mark in the timeline above

Explain the times, periods, and events that refer to life's evolution leading to human life on Earth.

How can we select stars whose planets are likely homes for life

The first complex multicellular life forms with appendages, etc., appeared on Earth about 0.5 billion years ago during the

What are the three properties of living things that the chapter identifies

-Using the above timeline, when did the Cambrian explosion occur

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Filters

The molecule is a long carbon-chain molecule that uses information stored in the molecule to copy the molecule.

Because of ____, _, and _______, physical interstellar travel is currently impossible.

Choose the correct terms to make the statement correct: _Chemical/Biological evolution occurs before chemical/biological__ evolution.