Question 1

Which of the following is true about photosynthetic bacteria?

Accepted Answer

A)  They are the most primitive of all bacteria. 
B)  Photosynthesis appears to have evolved several separate times. 
C)  Photosynthetic bacteria all appear to be closely related. 
D)  A comparison of rRNA genes in different lineages of photosynthetic bacteria would reveal that the genes are almost identical in all lineages. 
E)  All photosynthetic bacteria appear to have evolved relatively recently. 
A)  They are the most primitive of all bacteria. 
B)  Photosynthesis appears to have evolved several separate times. 
C)  Photosynthetic bacteria all appear to be closely related. 
D)  A comparison of rRNA genes in different lineages of photosynthetic bacteria would reveal that the genes are almost identical in all lineages. 
E)  All photosynthetic bacteria appear to have evolved relatively recently. B

Question 2

How are rRNA genes used to deduce evolutionary relationships?

Accepted Answer

All genes experience mutations (changes in their nucleotide sequences) over time. Ribosomal RNA (rRNA) genes mutate slowly and at a fairly constant and predictable rate. By comparing the nucleotide sequence in rRNA genes of any two species, scientists can deduce how long ago the two species shared a common ancestor. Only after the common ancestor split into separate lineages will rRNA mutations accumulate independently in different lineages. Consequently, many differences in the rRNA genes between two species indicate that they diverged long ago. Fewer differences indicate a more recent common ancestor, meaning that the organisms being compared are more closely related.

Question 3

The bacteria that causes diphtheria is called corynebacterium diphtheria. Which of the following has the name of this bacterial species written in proper scientific form?

Accepted Answer

A)  corynebacterium diphtheria 
B)  Corynebacterium Diphtheria 
C)  Corynebacterium diphtheria 
D)  corynebacterium Diphtheria 
A)  corynebacterium diphtheria 
B)  Corynebacterium Diphtheria 
C)  Corynebacterium diphtheria 
D)  corynebacterium Diphtheria C

Question 4

Which of the following is true about viral penetration?

Accepted Answer

A)  All non-enveloped and enveloped viruses enter host cells via endocytosis. 
B)  All non-enveloped and enveloped viruses enter host cells via fusion. 
C)  All non-enveloped viruses enter cells by endocytosis. All enveloped viruses enter cells by fusion. 
D)  All non-enveloped viruses enter cells by fusion. All enveloped viruses enter cells by endocytosis. 
E)  Non-enveloped viruses enter cells by endocytosis. Some enveloped viruses also enter by endocytosis, while others enter by fusion. 
A)  All non-enveloped and enveloped viruses enter host cells via endocytosis. 
B)  All non-enveloped and enveloped viruses enter host cells via fusion. 
C)  All non-enveloped viruses enter cells by endocytosis. All enveloped viruses enter cells by fusion. 
D)  All non-enveloped viruses enter cells by fusion. All enveloped viruses enter cells by endocytosis. 
E)  Non-enveloped viruses enter cells by endocytosis. Some enveloped viruses also enter by endocytosis, while others enter by fusion.

Question 5

Which of the following are the most closely related?

Accepted Answer

A)  Two animals that are in the same phylum 
B)  Two plants that are in the same class 
C)  Two fungi that are in the same order 
D)  Two bacteria that are in the same family 
A)  Two animals that are in the same phylum 
B)  Two plants that are in the same class 
C)  Two fungi that are in the same order 
D)  Two bacteria that are in the same family

Question 6

Viruses go through a series of defined steps in their replicative cycle. In which of the following are these steps listed in proper order?

Accepted Answer

A)  attachment » uncoating » penetration » synthesis » release » assembly 
B)  penetration » attachment » uncoating » assembly » synthesis » release 
C)  uncoating » attachment » penetration » synthesis » assembly » release 
D)  attachment » penetration » uncoating » synthesis » assembly » release 
E)  penetration » synthesis » assembly » attachment » release » uncoating 
A)  attachment » uncoating » penetration » synthesis » release » assembly 
B)  penetration » attachment » uncoating » assembly » synthesis » release 
C)  uncoating » attachment » penetration » synthesis » assembly » release 
D)  attachment » penetration » uncoating » synthesis » assembly » release 
E)  penetration » synthesis » assembly » attachment » release » uncoating

Question 7

Fungi that grow on dead material are called:

Accepted Answer

A)  autotrophs. 
B)  saprophytes. 
C)  filamentous fungi. 
D)  fleshy fungi. 
E)  Zygomycota. 
A)  autotrophs. 
B)  saprophytes. 
C)  filamentous fungi. 
D)  fleshy fungi. 
E)  Zygomycota.

Question 8

The classification of living things according to their evolutionary relationships is called:

Accepted Answer

A)  taxonomy. 
B)  phylogenetics. 
C)  taxonomic hierarchy. 
D)  the five-kingdom system of classification. 
E)  the three-domain system of classification. 
A)  taxonomy. 
B)  phylogenetics. 
C)  taxonomic hierarchy. 
D)  the five-kingdom system of classification. 
E)  the three-domain system of classification.

Question 9

What are mycorrhizial relationships? Provide an example.

Accepted Answer

Mycorrhizal associations are relationshi

Question 10

In which of the following ways are prions believed to differ from all other infectious agents?

Accepted Answer

A)  Unlike any other infectious agents, they are acellular. 
B)  Unlike any other infectious agents, they can infect many different species of hosts. 
C)  Unlike any other infectious agents, are able to reproduce without any nucleic acid. 
D)  Prions appear to be unusual viruses that have both DNA and RNA. 
E)  Unlike other infectious agents, which are found only in specific host tissues, prions have the ability to infect any tissue in a host's body. 
A)  Unlike any other infectious agents, they are acellular. 
B)  Unlike any other infectious agents, they can infect many different species of hosts. 
C)  Unlike any other infectious agents, are able to reproduce without any nucleic acid. 
D)  Prions appear to be unusual viruses that have both DNA and RNA. 
E)  Unlike other infectious agents, which are found only in specific host tissues, prions have the ability to infect any tissue in a host's body.

Question 11

What is different about the synthesis stage in a plus- and a minus-strand RNA virus?

Accepted Answer

Both plus- and minus-RNA viruses carry R

Question 12

Which of the following statements is true about archaea?

Accepted Answer

A)  They are in the domain Bacteria. 
B)  They have cells walls identical to those of bacteria. 
C)  They have eukaryotic cells. 
D)  They often are found in extreme environments. 
E)  All known archaea require oxygen for survival. 
A)  They are in the domain Bacteria. 
B)  They have cells walls identical to those of bacteria. 
C)  They have eukaryotic cells. 
D)  They often are found in extreme environments. 
E)  All known archaea require oxygen for survival.

Question 13

The feeding and reproducing stage of many protozoa is known as a:

Accepted Answer

A)  trophozoite. 
B)  cyst. 
C)  vector. 
D)  protista. 
E)  mastigophora. 
A)  trophozoite. 
B)  cyst. 
C)  vector. 
D)  protista. 
E)  mastigophora.

Which of the following is true about photosynthetic bacteria?

How are rRNA genes used to deduce evolutionary relationships?

The bacteria that causes diphtheria is called corynebacterium diphtheria. Which of the following has the name of this bacterial species written in proper scientific form?

Which of the following is true about viral penetration?

Which of the following are the most closely related?

Viruses go through a series of defined steps in their replicative cycle. In which of the following are these steps listed in proper order?

Fungi that grow on dead material are called:

The classification of living things according to their evolutionary relationships is called:

What are mycorrhizial relationships? Provide an example.

In which of the following ways are prions believed to differ from all other infectious agents?

What is different about the synthesis stage in a plus- and a minus-strand RNA virus?

Which of the following statements is true about archaea?

The feeding and reproducing stage of many protozoa is known as a:

Living in a Microbial World

The Chemistry of Life

The Cell: Where Life Begins

The Microbiology of History and the History of Microbiology

Microbial Genetics

Metabolism and Growth

Microbial Evolution: the Origin and Diversity of Life

An Ecologists Guide to Microbiology

The Nature of Disease: a Pathogens Perspective

Host Defense

Control of Microbial Growth

Epidemiology: Who, What, When, Where, and Why

The Future Is Here: Microorganisms and Biotechnology

Guess Whos Coming to Dinner: Microorganisms and Food

Better Living With Microorganisms: Industrial and Applied Microbiology

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Exam 4: A Field Guide to the Microorganisms

Which of the following is true about photosynthetic bacteria?

How are rRNA genes used to deduce evolutionary relationships?

The bacteria that causes diphtheria is called corynebacterium diphtheria. Which of the following has the name of this bacterial species written in proper scientific form?

Which of the following is true about viral penetration?

Which of the following are the most closely related?

Viruses go through a series of defined steps in their replicative cycle. In which of the following are these steps listed in proper order?

Fungi that grow on dead material are called:

The classification of living things according to their evolutionary relationships is called:

What are mycorrhizial relationships? Provide an example.

In which of the following ways are prions believed to differ from all other infectious agents?

What is different about the synthesis stage in a plus- and a minus-strand RNA virus?

Which of the following statements is true about archaea?

The feeding and reproducing stage of many protozoa is known as a:

Living in a Microbial World

The Chemistry of Life

The Cell: Where Life Begins

The Microbiology of History and the History of Microbiology

Microbial Genetics

Metabolism and Growth

Microbial Evolution: the Origin and Diversity of Life

An Ecologists Guide to Microbiology

The Nature of Disease: a Pathogens Perspective

Host Defense

Control of Microbial Growth

Epidemiology: Who, What, When, Where, and Why

The Future Is Here: Microorganisms and Biotechnology

Guess Whos Coming to Dinner: Microorganisms and Food

Better Living With Microorganisms: Industrial and Applied Microbiology

Filters