Question 1

How did mitochondria and chloroplasts arise in eukaryotic cells?

Accepted Answer

A)  Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell 
B)  Via binary fission, where bacteria divided to create mitochondria and chloroplasts 
C)  Via the endomembrane system that engulfed mitochondria and chloroplasts 
D)  Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts 
A)  Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell 
B)  Via binary fission, where bacteria divided to create mitochondria and chloroplasts 
C)  Via the endomembrane system that engulfed mitochondria and chloroplasts 
D)  Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts A

Question 2

Which protist group includes members with plantlike traits such as chloroplasts and multicellularity?

Accepted Answer

A)  Slime molds 
B)  Algae 
C)  Amoebas 
D)  None of the protists have chloroplasts. 
A)  Slime molds 
B)  Algae 
C)  Amoebas 
D)  None of the protists have chloroplasts. B

Question 3

Where do you expect to find thermophiles?

Accepted Answer

A)  In anoxic environments 
B)  In salty environments 
C)  In dry environments 
D)  In hot environments 
A)  In anoxic environments 
B)  In salty environments 
C)  In dry environments 
D)  In hot environments D

Question 4

Which statement is true regarding bacteria?

Accepted Answer

A)  All bacteria are pathogens and harmful to humans. 
B)  Some bacteria are pathogens and harmful to humans, whereas lots of bacteria are helpful to humans. 
C)  All bacteria are helpful to humans. 
D)  All bacteria are pathogens, but some harm humans more than others. 
A)  All bacteria are pathogens and harmful to humans. 
B)  Some bacteria are pathogens and harmful to humans, whereas lots of bacteria are helpful to humans. 
C)  All bacteria are helpful to humans. 
D)  All bacteria are pathogens, but some harm humans more than others.

Question 5

Which began first?

Accepted Answer

A)  Multicellular life in the ocean 
B)  Multicellular life in fresh water 
C)  Plants colonizing the land 
D)  Animals colonizing the land 
A)  Multicellular life in the ocean 
B)  Multicellular life in fresh water 
C)  Plants colonizing the land 
D)  Animals colonizing the land

Question 6

Where would you expect to find methanogens?

Accepted Answer

A)  Near a volcano 
B)  In the surf along the beach 
C)  On the surface of plants 
D)  In the digestive tract of cows 
A)  Near a volcano 
B)  In the surf along the beach 
C)  On the surface of plants 
D)  In the digestive tract of cows

Question 7

Viruses that infect bacteria are called ________.

Accepted Answer

A)  phages 
B)  plasmids 
C)  viroids 
D)  vectors 
A)  phages 
B)  plasmids 
C)  viroids 
D)  vectors

Question 8

An organism is considered truly eukaryotic when ________.

Accepted Answer

A)  its cells cannot survive on their own 
B)  its cells form colonies 
C)  its cells specialize in various tasks 
D)  each cell can carry out all of life's functions 
A)  its cells cannot survive on their own 
B)  its cells form colonies 
C)  its cells specialize in various tasks 
D)  each cell can carry out all of life's functions

Question 9

All protists are unicellular organisms.

Accepted Answer

A) True 
 B)False

Question 10

Which method of bacterial DNA transfer involves a physical connection between the two bacterial cells?

Accepted Answer

A)  Transformation 
B)  Transduction 
C)  Binary fission 
D)  Conjugation 
A)  Transformation 
B)  Transduction 
C)  Binary fission 
D)  Conjugation

Question 11

Why could prokaryotes survive without eukaryotes but eukaryotes could not survive without prokaryotes?

Accepted Answer

Prokaryotes existed for over a

Question 12

Approximately when did the earth's crust solidify?

Accepted Answer

A)  8 billion years ago 
B)  4 billion years ago 
C)  2 billion years ago 
D)  1 billion years ago 
A)  8 billion years ago 
B)  4 billion years ago 
C)  2 billion years ago 
D)  1 billion years ago

Question 13

Halophiles are a type of ________.

Accepted Answer

A)  Bacteria 
B)  Archaea 
C)  Eukarya 
D)  Plants 
A)  Bacteria 
B)  Archaea 
C)  Eukarya 
D)  Plants

Question 14

By what means do prokaryotes typically divide?

Accepted Answer

A)  Binary fission 
B)  Mitosis 
C)  Meiosis 
D)  Regeneration 
A)  Binary fission 
B)  Mitosis 
C)  Meiosis 
D)  Regeneration

Question 15

HIV has an RNA genome that is converted to DNA when infecting a human immune cell.This type of virus is called a ________.

Accepted Answer

A)  bacteriophage 
B)  prion 
C)  retrovirus 
D)  reverse transcriptase 
A)  bacteriophage 
B)  prion 
C)  retrovirus 
D)  reverse transcriptase

Question 16

What are plasmids?

Accepted Answer

A)  Small, circular DNA molecules that contain just a few genes and that can be passed on to other bacteria 
B)  Small, circular RNA molecules that contain just a few genes and that can be passed on to other bacteria 
C)  Small, circular DNA molecules that contain just a few genes but that cannot be passed on to other bacteria 
D)  Small, circular RNA molecules that contain many genes but that cannot be passed on to other bacteria 
A)  Small, circular DNA molecules that contain just a few genes and that can be passed on to other bacteria 
B)  Small, circular RNA molecules that contain just a few genes and that can be passed on to other bacteria 
C)  Small, circular DNA molecules that contain just a few genes but that cannot be passed on to other bacteria 
D)  Small, circular RNA molecules that contain many genes but that cannot be passed on to other bacteria

Question 17

How many domains contain prokaryotic organisms?

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four 
A)  One 
B)  Two 
C)  Three 
D)  Four

Question 18

HIV,the virus that causes AIDS in humans,does not infect other animals,but only certain cells in the human body.Why?

Accepted Answer

The recognition spikes on the

Question 19

By what means do amoebas move?

Accepted Answer

A)  Flagella 
B)  Cilia 
C)  Pseudopodia 
D)  Amoebas do not move; they are anchored to the substrate. 
A)  Flagella 
B)  Cilia 
C)  Pseudopodia 
D)  Amoebas do not move; they are anchored to the substrate.

Question 20

An infectious circular piece of RNA that can infect plants is called a ________.

Accepted Answer

A)  virus 
B)  prion 
C)  viroid 
D)  capsid 
A)  virus 
B)  prion 
C)  viroid 
D)  capsid

How did mitochondria and chloroplasts arise in eukaryotic cells?

Which protist group includes members with plantlike traits such as chloroplasts and multicellularity?

Where do you expect to find thermophiles?

Which statement is true regarding bacteria?

Which began first?

Where would you expect to find methanogens?

Viruses that infect bacteria are called ________.

An organism is considered truly eukaryotic when ________.

All protists are unicellular organisms.

Which method of bacterial DNA transfer involves a physical connection between the two bacterial cells?

Why could prokaryotes survive without eukaryotes but eukaryotes could not survive without prokaryotes?

Approximately when did the earth's crust solidify?

Halophiles are a type of ________.

By what means do prokaryotes typically divide?

HIV has an RNA genome that is converted to DNA when infecting a human immune cell.This type of virus is called a ________.

What are plasmids?

How many domains contain prokaryotic organisms?

HIV,the virus that causes AIDS in humans,does not infect other animals,but only certain cells in the human body.Why?

By what means do amoebas move?

An infectious circular piece of RNA that can infect plants is called a ________.

An Introduction to the Science of Life

The Chemistry of Life

The Cell: The Fundamental Unit of Life

Energy and Life

Chromosomes and Inheritance

Dna: the Molecule of Life

Darwinian Evolution

Biodiversity 2: Fungi and Plants

Biodiversity 3: Animals

Human Body Systems

Ecology

Filters

Exam 8: Biodiversity 1: Microscopic Organisms

How did mitochondria and chloroplasts arise in eukaryotic cells?

Which protist group includes members with plantlike traits such as chloroplasts and multicellularity?

Where do you expect to find thermophiles?

Which statement is true regarding bacteria?

Which began first?

Where would you expect to find methanogens?

Viruses that infect bacteria are called ________.

An organism is considered truly eukaryotic when ________.

All protists are unicellular organisms.

Which method of bacterial DNA transfer involves a physical connection between the two bacterial cells?

Why could prokaryotes survive without eukaryotes but eukaryotes could not survive without prokaryotes?

Approximately when did the earth's crust solidify?

Halophiles are a type of ________.

By what means do prokaryotes typically divide?

HIV has an RNA genome that is converted to DNA when infecting a human immune cell.This type of virus is called a ________.

What are plasmids?

How many domains contain prokaryotic organisms?

HIV,the virus that causes AIDS in humans,does not infect other animals,but only certain cells in the human body.Why?

By what means do amoebas move?

An infectious circular piece of RNA that can infect plants is called a ________.

An Introduction to the Science of Life

The Chemistry of Life

The Cell: The Fundamental Unit of Life

Energy and Life

Chromosomes and Inheritance

Dna: the Molecule of Life

Darwinian Evolution

Biodiversity 2: Fungi and Plants

Biodiversity 3: Animals

Human Body Systems

Ecology

Filters