Question 1

Chemical evolution concentrated the various smaller molecules into more stable forms.

Accepted Answer

A) True 
 B)False

Question 2

The Viking landers searched for life on ____________________.

Accepted Answer

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

Question 3

All life on Earth is based on carbon chemistry.

Accepted Answer

A) True 
 B)False

Question 4

The most likely region of the radio spectrum for communication with other civilizations is called "the water hole." What part of the spectrum is this?

Accepted Answer

A) the part of the spectrum near the radio emission of water 
B) the part of the spectrum between the radio emission of hydrogen and oxygen 
C) the part of the spectrum between the radio emissions of hydrogen and OH 
D) the part of the spectrum near the radio band where water in the Earth's atmosphere strongly absorbs energy 
A) the part of the spectrum near the radio emission of water 
B) the part of the spectrum between the radio emission of hydrogen and oxygen 
C) the part of the spectrum between the radio emissions of hydrogen and OH 
D) the part of the spectrum near the radio band where water in the Earth's atmosphere strongly absorbs energy

Question 5

Which of the following is a segment of a chromosome that controls a specific function?

Accepted Answer

A) DNA 
B) RNA 
C) a gene 
D) an amino acid 
A) DNA 
B) RNA 
C) a gene 
D) an amino acid

Question 6

How is DNA important to a cell?

Accepted Answer

A) DNA is the cell membrane that allows nutrients to enter the cell and waste to leave the cell. 
B) DNA contains the information necessary to make all of the molecules required by the organism and to reproduce itself. 
C) DNA contains the information necessary for a cell to defend itself against nearby enemy cells. 
D) DNA is the molecule that stores energy within a cell. 
A) DNA is the cell membrane that allows nutrients to enter the cell and waste to leave the cell. 
B) DNA contains the information necessary to make all of the molecules required by the organism and to reproduce itself. 
C) DNA contains the information necessary for a cell to defend itself against nearby enemy cells. 
D) DNA is the molecule that stores energy within a cell.

Question 7

Suppose that SETI researchers discovered a radio signal coming from a star in the direction of the centre of the Milky Way that was about 10% closer to the centre than the Sun.Humans sent a reply to this signal immediately,and the aliens replied when they got our message,how long would it take before the alien reply reached Earth?

Accepted Answer

A) a few years 
B) several decades 
C) a few hundred years 
D) thousands of years 
A) a few years 
B) several decades 
C) a few hundred years 
D) thousands of years

Question 8

The Miller experiment succeeded in creating ____________________.

Accepted Answer

The answer of The Miller experiment succeeded in creating ____________________....

Question 9

Describe three things that limit travel between stars.

Accepted Answer

The answer of Describe three things that limit travel between...

Question 10

The DNA molecules contain six different bases.

Accepted Answer

A) True 
 B)False

Question 11

DNA is coiled into a tight spiral and makes up the genetic material in a cell.What is that material called?

Accepted Answer

A) amino acids 
B) enzymes 
C) nucleus 
D) chromosomes 
A) amino acids 
B) enzymes 
C) nucleus 
D) chromosomes

Question 12

Why are massive main sequence stars not likely to have planets that contain life?

Accepted Answer

A) These stars would sweep away all of the material from which planets could form. 
B) These stars are too hot to allow water to exist as a liquid on any planets that might form. 
C) These stars are on the main sequence for too short a time to allow life to evolve. 
D) These stars are almost always binaries and planetary orbits are unstable around binaries. 
A) These stars would sweep away all of the material from which planets could form. 
B) These stars are too hot to allow water to exist as a liquid on any planets that might form. 
C) These stars are on the main sequence for too short a time to allow life to evolve. 
D) These stars are almost always binaries and planetary orbits are unstable around binaries.

Question 13

What are a cell's DNA molecules made of?

Accepted Answer

A) amino acids 
B) proteins 
C) sugars, phosphates, and bases 
D) fatty acids 
A) amino acids 
B) proteins 
C) sugars, phosphates, and bases 
D) fatty acids

Question 14

Which of the choices below sorts the solar system locations from most-to-least likely for life to develop?

Accepted Answer

A) Mars, Europa, Enceladus, Titan 
B) Mars, Earth's moon, Mercury, Europa 
C) Mercury, Venus, Earth's moon, Mars 
D) Titan, Europa, Venus, Mars 
A) Mars, Europa, Enceladus, Titan 
B) Mars, Earth's moon, Mercury, Europa 
C) Mercury, Venus, Earth's moon, Mars 
D) Titan, Europa, Venus, Mars

Question 15

What wavelengths are used in current searches for extraterrestrial intelligence by radio telescopes?

Accepted Answer

A) wavelengths that are longer than the local wavelengths emitted by the Earth's atmosphere 
B) wavelengths that are longer than the radio wavelength "noise" naturally emitted by our galaxy 
C) wavelengths with the greatest speeds 
D) the same wavelengths that are used on Earth for TV signals 
A) wavelengths that are longer than the local wavelengths emitted by the Earth's atmosphere 
B) wavelengths that are longer than the radio wavelength "noise" naturally emitted by our galaxy 
C) wavelengths with the greatest speeds 
D) the same wavelengths that are used on Earth for TV signals

Question 16

What kind of information is stored in DNA molecules?

Accepted Answer

DNA, or deoxyribonucleic acid, is a mole

Question 17

What molecule carries information from the cell nucleus out into the cell,where specific proteins are made from the information?

Accepted Answer

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

Question 18

Presuming that it takes a few billion years for complex life to evolve in a stable environment,what kind of stars are most likely to currently have inhabited planets?

Accepted Answer

A) G to K main sequence stars 
B) B to A main sequence stars 
C) G to K giants 
D) white dwarf stars 
A) G to K main sequence stars 
B) B to A main sequence stars 
C) G to K giants 
D) white dwarf stars

Question 19

What is the difference between chemical evolution and biological evolution?

Accepted Answer

The answer of What is the difference between chemical evolution...

Question 20

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

Accepted Answer

The answer of What are the three properties of living...

Chemical evolution concentrated the various smaller molecules into more stable forms.

The Viking landers searched for life on ____________________.

All life on Earth is based on carbon chemistry.

The most likely region of the radio spectrum for communication with other civilizations is called "the water hole." What part of the spectrum is this?

Which of the following is a segment of a chromosome that controls a specific function?

How is DNA important to a cell?

The Miller experiment succeeded in creating ____________________.

Describe three things that limit travel between stars.

The DNA molecules contain six different bases.

DNA is coiled into a tight spiral and makes up the genetic material in a cell.What is that material called?

Why are massive main sequence stars not likely to have planets that contain life?

What are a cell's DNA molecules made of?

Which of the choices below sorts the solar system locations from most-to-least likely for life to develop?

What wavelengths are used in current searches for extraterrestrial intelligence by radio telescopes?

What kind of information is stored in DNA molecules?

What molecule carries information from the cell nucleus out into the cell,where specific proteins are made from the information?

Presuming that it takes a few billion years for complex life to evolve in a stable environment,what kind of stars are most likely to currently have inhabited planets?

What is the difference between chemical evolution and biological evolution?

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

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

Chemical evolution concentrated the various smaller molecules into more stable forms.

The Viking landers searched for life on ____________________.

All life on Earth is based on carbon chemistry.

The most likely region of the radio spectrum for communication with other civilizations is called "the water hole." What part of the spectrum is this?

Which of the following is a segment of a chromosome that controls a specific function?

How is DNA important to a cell?

The Miller experiment succeeded in creating ____________________.

Describe three things that limit travel between stars.

The DNA molecules contain six different bases.

DNA is coiled into a tight spiral and makes up the genetic material in a cell.What is that material called?

Why are massive main sequence stars not likely to have planets that contain life?

What are a cell's DNA molecules made of?

Which of the choices below sorts the solar system locations from most-to-least likely for life to develop?

What wavelengths are used in current searches for extraterrestrial intelligence by radio telescopes?

What kind of information is stored in DNA molecules?

What molecule carries information from the cell nucleus out into the cell,where specific proteins are made from the information?

Presuming that it takes a few billion years for complex life to evolve in a stable environment,what kind of stars are most likely to currently have inhabited planets?

What is the difference between chemical evolution and biological evolution?

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

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