Question 1

Prokaryotes lack which of the following?

Accepted Answer

A)  A nucleus
B)  RNA
C)  DNA
D)  A cell membrane
E)  A cell wallF) A) and C)
G) A) and B)

Question 2

Many drugs are produced by placing human genes into bacteria.The bacteria then transcribe and translate these genes into functional human proteins that can then be purified and given as drugs.The fact that this process works is consistent with which statement?

Accepted Answer

A)  Bacteria have evolved to mimic human cells
B)  Bacteria cannot divide unless they are inside a host cell
C)  Humans and bacteria share a common ancestor
D)  Bacteria need to make human proteins to live inside the human body
E)  Human and bacteria use different genetic materialF) B) and D)
G) C) and D)

Question 3

Escherichia coli and Salmonella can remain in one location in our intestines.They would most likely contain which of the following?

Accepted Answer

A)  Pili
B)  Flagella
C)  Cilia
D)  Glycocalyx
E)  SpirochetesF) D) and E)
G) All of the above

Question 4

The primary component making up the cell walls of bacteria is:

Accepted Answer

A)  Peptidoglycan
B)  Glucose
C)  A complex lipid
D)  Cellulose
E)  ChitinF) A) and E)
G) A) and D)

Question 5

Heterotrophs must acquire carbon from organic molecules produced from other organisms.

Accepted Answer

A) True 
 B)False

Question 6

A type of horizontal gene transfer in prokaryotes in which a cell receives DNA from another cell through sex pili is:

Accepted Answer

A)  Transformation
B)  Replication
C)  Transduction
D)  Conjugation
E)  FixationF) B) and C)
G) A) and E)

Question 7

Dormant thick-walled structures that aid in allowing some bacteria to survive harsh conditions are:

Accepted Answer

A)  Plasmids
B)  Pili
C)  Ribosomes
D)  Flagella
E)  EndosporesF) B) and D)
G) A) and B)

Question 8

The domain (domains) that contain prokaryotes is (are) :

Accepted Answer

A)  Archaea
B)  Bacteria
C)  Both Archaea and Bacteria
D)  Eukarya
E)  Both Bacteria and EukaryaF) A) and C)
G) A) and D)

Question 9

A microbiologist gram stains a bacterium and finds the bacterium to be pink to red in color,this identifies:

Accepted Answer

A)  The species of bacterium
B)  The bacterium as gram positive
C)  The bacterium as a bacterium that causes human disease
D)  The bacterium as gram negativeE) All of the above
F) C) and D)

Question 10

Biofilms are organized aggregates of bacteria that may:

Accepted Answer

A)  All are correct
B)  Protect one another
C)  Communicate with one another
D)  Form differentiated structures with specialized functions
E)  Form when bacteria settle and reproduce on a solid surfaceF) A) and C)
G) A) and B)

Question 11

A prokaryote that occupies a habitat that is characterized by extreme heat (above 50 degrees Celsius) is a(an) :

Accepted Answer

A)  Thermophile
B)  Acidophile
C)  Halophile
D)  Basophile
E)  HydrophileF) A) and B)
G) A) and C)

Question 12

Which of the following does NOT have a cell wall?

Accepted Answer

A)  An animal cell
B)  A bacterium
C)  A plant cell
D)  A diatom
E)  A fungal cellF) C) and D)
G) C) and E)

Question 13

Clostridium tetani,the bacterium that causes tetanus,can only survive in soil away from oxygen.It is considered which of the following?

Accepted Answer

A)  An obligate anaerobe
B)  A facultative anaerobe
C)  A phototroph
D)  An autotroph
E)  AerobicF) A) and E)
G) D) and E)

Question 14

Which of the following is true of a prokaryote?

Accepted Answer

A)  Prokaryotes do not have a nucleus
B)  Prokaryotes are single celled
C)  Prokaryotes do not have a chromosome
D)  Prokaryotes do not have membrane-bounded organelles
E)  Prokaryotes do not have ribosomesF) A) and E)
G) A) and D)

Question 15

The region of a prokaryotic cell where the bacterial chromosome (DNA) is located is the:

Accepted Answer

A)  Cell membrane
B)  Nucleus
C)  Cell wall
D)  Nuleoid
E)  RibosomeF) A) and E)
G) All of the above

Question 16

figure 16.14 
-Based on figure 16.14,which of the following is the most likely explanation for the observed pattern of MRSA strains?

Accepted Answer

A)  The methicillin resistance mutation has evolved many times through processes like conjugation
B)  The methicillin resistance mutation arose once and was passed through processes like binary fission
C)  Methicillin resistance is a recessive mutation, and only appears when two carrier bacteria mate
D)  The distribution of methicillin resistance is random, and is not likely caused by a single mutation
E)  Toxic shock syndrome is caused by methicillin resistanceF) A) and B)
G) None of the above

Question 17

A prokaryote that occupies a habitat that is extremely salty is a(an) :

Accepted Answer

A)  Thermophile
B)  Acidophile
C)  Halophile
D)  Basophile
E)  HydrophileF) B) and D)
G) D) and E)

Question 18

Autotrophs must acquire carbon from organic molecules produced from other organisms.

Accepted Answer

A) True 
 B)False

Question 19

An asexual process used by prokaryotes,in which replicated DNA and other cell parts are distributed into two daughter cells is called:

Accepted Answer

A)  Mitosis
B)  Binary fusion
C)  Daughter cell duplication
D)  Binary fission
E)  ConjugationF) B) and D)
G) B) and C)

Question 20

Mycobacterium tuberculosis is an obligate aerobe.In which organ would you expect to find these bacteria?

Accepted Answer

A)  Intestines
B)  Brain
C)  Liver
D)  Kidney
E)  LungF) B) and D)
G) B) and E)

Exam 16: Bacteria and Archaea

Which of the following does NOT have a cell wall?

Correct AnswerverifiedShow Answer

Prokaryotes lack which of the following?

Correct AnswerverifiedShow Answer

An asexual process used by prokaryotes,in which replicated DNA and other cell parts are distributed into two daughter cells is called:

Correct AnswerverifiedShow Answer

Clostridium tetani,the bacterium that causes tetanus,can only survive in soil away from oxygen.It is considered which of the following?

Correct AnswerverifiedShow Answer

The primary component making up the cell walls of bacteria is:

Correct AnswerverifiedShow Answer

The domain (domains) that contain prokaryotes is (are) :

Correct AnswerverifiedShow Answer

A prokaryote that occupies a habitat that is extremely salty is a(an) :

Correct AnswerverifiedShow Answer

A type of horizontal gene transfer in prokaryotes in which a cell receives DNA from another cell through sex pili is:

Correct AnswerverifiedShow Answer

Escherichia coli and Salmonella can remain in one location in our intestines.They would most likely contain which of the following?

Correct AnswerverifiedShow Answer

Many drugs are produced by placing human genes into bacteria.The bacteria then transcribe and translate these genes into functional human proteins that can then be purified and given as drugs.The fact that this process works is consistent with which statement?

Correct AnswerverifiedShow Answer

Biofilms are organized aggregates of bacteria that may:

Correct AnswerverifiedShow Answer

The region of a prokaryotic cell where the bacterial chromosome (DNA) is located is the:

Correct AnswerverifiedShow Answer

Which of the following is true of a prokaryote?

Correct AnswerverifiedShow Answer

Heterotrophs must acquire carbon from organic molecules produced from other organisms.

Correct AnswerverifiedShow Answer

A prokaryote that occupies a habitat that is characterized by extreme heat (above 50 degrees Celsius) is a(an) :

Correct AnswerverifiedShow Answer

Autotrophs must acquire carbon from organic molecules produced from other organisms.

Correct AnswerverifiedShow Answer

A microbiologist gram stains a bacterium and finds the bacterium to be pink to red in color,this identifies:

Correct AnswerverifiedShow Answer

Mycobacterium tuberculosis is an obligate aerobe.In which organ would you expect to find these bacteria?

Correct AnswerverifiedShow Answer

figure 16.14 -Based on figure 16.14,which of the following is the most likely explanation for the observed pattern of MRSA strains?

Correct AnswerverifiedShow Answer

Dormant thick-walled structures that aid in allowing some bacteria to survive harsh conditions are:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified