MICROBIOLOGY EXAM 1,2,3 AND 4 NEWEST ACTUAL EXAM
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
Microbes live in us, on us, and nearly everywhere around us. Which of the following
activities are microbes involved in?
A) decomposing dead animals
B) aiding the digestive processes of grazing animals
C) capturing energy from the sun
D) all of the above
(Chapter 1) - ANSWER: D) all of the above
Which of the following is a reason microorganisms are useful in many different
research laboratories (such as ecology, biochemistry, evolution, and genetics)?
A) they are easy to see and count
B) they have fairly complex structures and are expensive
C) they reproduce fast and grow in large numbers
D) they live everywhere so contaminants from the environment are not a problem
(Chapter 1) - ANSWER: C) they reproduce fast and grow in large numbers
Microbiology is the study of bacteria, algae, fungi, viruses, and protozoa. Most of
these are single-celled, except for which two:
A) bacteria (some of which are multicellular) and algae (which are nonliving proteins)
B) viruses (which are not cells) and fungi (some have many cells)
C) protozoa (which are not made of cells) and fungi (which are free nucleic acids)
D) bacteria (some of which have no cells) and viruses (made of many cells)
(Chapter 1) - ANSWER: B) viruses (which are not cells) and fungi (some have many
cells)
A parasitologist studies parasites. What does a mycologist study?
A) protozoa
B) how viruses cause disease and are involved in cancer
C) the development of chemical substances to treat diseases
D) fungi
(Chapter 1) - ANSWER: D) fungi
What discovery was crucial to the founding of the field of microbiology?
A) isolation of lepers limiting the spread of infectious disease
B) agglutination of bacteria in immune serum
C) the chemical composition of DNA, the genetic material
D) microscopes that allowed for the direct observation of microbes
,(Chapter 1) - ANSWER: D) microscopes that allowed for the direct observation of
microbes
The English scientist Robert Hooke coined the term cell because the small boxes he
saw in the microscope reminded him of a monks room. What is the cell theory that
was later proposed?
Group of answer choices
A) cells are fundamental units of life
B) replication requires the division of cells into teo equal cells
C) hereditary information is passed on in the form of DNA
D) all organisms are unicellular, made up of one cell
(Chapter 1) - ANSWER: A) cells are fundamental units of life
Koch's postulates were
A) specific to anthrax and tuberculosis but don't apply to other diseases
B) designed to establish a causal relationship between a causative microbe and a
disease
C) strict in that microorganisms isolated from experimentally inoculated hosts had to
be different from the microorganism that was introduced into the host
D) interpreted as many organisms could cause the same disease
(Chapter 1) - ANSWER: B) designed to establish a causal relationship between a
causative microbe and a disease
Vaccines are
A) specific disease-causing molecules that incorporate into cells
B) the causative agent of Black Death
C) selective chemicals used to treat infectious disease
D) preparations that establish immunity to a disease
(Chapter 1) - ANSWER: D) preparations that establish immunity to a disease
Microbiologists investigate problems by designing and carrying out experiments.
What is true about the scientific method?
A) a hypothesis is the definitive explanation to account for the observation and
therefore does not need to be tested
B) a prediction is the factor that can change but are prevented from changing during
the duration of the experiment
C) a good hypothesis is one that offers the simplest, most reasonable explanation
and can be tested
D) the goal of an experiment is to prove that scientists are always correct in their
predictions
(Chapter 1) - ANSWER: C) a good hypothesis is one that offers the simplest, most
reasonable explanation and can be tested
, Bacteriophages are
A) modified antibiotics that are used in the Soviet Union
B) viruses that attack and kill specific kinds of bacteria including antibiotic resistant
bacteria
C) used to introduce genes in gene therapy
D) some of the genes in the human genome
(Chapter 1) - ANSWER: B) viruses that attack and kill specific kinds of bacteria
including antibiotic resistant bacteria
Over 100 microbial genomes have been sequenced; beyond yielding insight into
microbial genomes, these sequencing projects have been important because:
A) they developed the techniques that allowed for the Human Genome Project
B) knowing how many chromosomes a microbe has lets us know if it causes disease
C) without the sequence of the genome we cannot tell what the organism uses as its
genetic material
D) it demonstrated that microorganisms do not cause infectious diseases
(Chapter 1) - ANSWER: A) they developed the techniques that allowed for the
Human Genome Project
Which of the following diseases has been eradicated?
A) chicken pox
B) measles
C) smallpox
D) mumps
(Chapter 1) - ANSWER: C) smallpox
A pure culture refers to
A) a culture containing bacteria that all have the same shape
B) a culture which has never been used to inoculate a patient
C) a culture which causes only a single disease
D) a culture which contains only a single organism
(Chapter 1) - ANSWER: D) a culture which contains only a single organism
The first person to use a microscope to observe living cells was
A) Robert Hooke
B) Mathias Schleiden
C) Anton van Leeuwenhoek
D) Louis Pasteur
(Chapter 1) - ANSWER: C) Anton van Leeuwenhoek
A microorganism that causes disease is called
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
Microbes live in us, on us, and nearly everywhere around us. Which of the following
activities are microbes involved in?
A) decomposing dead animals
B) aiding the digestive processes of grazing animals
C) capturing energy from the sun
D) all of the above
(Chapter 1) - ANSWER: D) all of the above
Which of the following is a reason microorganisms are useful in many different
research laboratories (such as ecology, biochemistry, evolution, and genetics)?
A) they are easy to see and count
B) they have fairly complex structures and are expensive
C) they reproduce fast and grow in large numbers
D) they live everywhere so contaminants from the environment are not a problem
(Chapter 1) - ANSWER: C) they reproduce fast and grow in large numbers
Microbiology is the study of bacteria, algae, fungi, viruses, and protozoa. Most of
these are single-celled, except for which two:
A) bacteria (some of which are multicellular) and algae (which are nonliving proteins)
B) viruses (which are not cells) and fungi (some have many cells)
C) protozoa (which are not made of cells) and fungi (which are free nucleic acids)
D) bacteria (some of which have no cells) and viruses (made of many cells)
(Chapter 1) - ANSWER: B) viruses (which are not cells) and fungi (some have many
cells)
A parasitologist studies parasites. What does a mycologist study?
A) protozoa
B) how viruses cause disease and are involved in cancer
C) the development of chemical substances to treat diseases
D) fungi
(Chapter 1) - ANSWER: D) fungi
What discovery was crucial to the founding of the field of microbiology?
A) isolation of lepers limiting the spread of infectious disease
B) agglutination of bacteria in immune serum
C) the chemical composition of DNA, the genetic material
D) microscopes that allowed for the direct observation of microbes
,(Chapter 1) - ANSWER: D) microscopes that allowed for the direct observation of
microbes
The English scientist Robert Hooke coined the term cell because the small boxes he
saw in the microscope reminded him of a monks room. What is the cell theory that
was later proposed?
Group of answer choices
A) cells are fundamental units of life
B) replication requires the division of cells into teo equal cells
C) hereditary information is passed on in the form of DNA
D) all organisms are unicellular, made up of one cell
(Chapter 1) - ANSWER: A) cells are fundamental units of life
Koch's postulates were
A) specific to anthrax and tuberculosis but don't apply to other diseases
B) designed to establish a causal relationship between a causative microbe and a
disease
C) strict in that microorganisms isolated from experimentally inoculated hosts had to
be different from the microorganism that was introduced into the host
D) interpreted as many organisms could cause the same disease
(Chapter 1) - ANSWER: B) designed to establish a causal relationship between a
causative microbe and a disease
Vaccines are
A) specific disease-causing molecules that incorporate into cells
B) the causative agent of Black Death
C) selective chemicals used to treat infectious disease
D) preparations that establish immunity to a disease
(Chapter 1) - ANSWER: D) preparations that establish immunity to a disease
Microbiologists investigate problems by designing and carrying out experiments.
What is true about the scientific method?
A) a hypothesis is the definitive explanation to account for the observation and
therefore does not need to be tested
B) a prediction is the factor that can change but are prevented from changing during
the duration of the experiment
C) a good hypothesis is one that offers the simplest, most reasonable explanation
and can be tested
D) the goal of an experiment is to prove that scientists are always correct in their
predictions
(Chapter 1) - ANSWER: C) a good hypothesis is one that offers the simplest, most
reasonable explanation and can be tested
, Bacteriophages are
A) modified antibiotics that are used in the Soviet Union
B) viruses that attack and kill specific kinds of bacteria including antibiotic resistant
bacteria
C) used to introduce genes in gene therapy
D) some of the genes in the human genome
(Chapter 1) - ANSWER: B) viruses that attack and kill specific kinds of bacteria
including antibiotic resistant bacteria
Over 100 microbial genomes have been sequenced; beyond yielding insight into
microbial genomes, these sequencing projects have been important because:
A) they developed the techniques that allowed for the Human Genome Project
B) knowing how many chromosomes a microbe has lets us know if it causes disease
C) without the sequence of the genome we cannot tell what the organism uses as its
genetic material
D) it demonstrated that microorganisms do not cause infectious diseases
(Chapter 1) - ANSWER: A) they developed the techniques that allowed for the
Human Genome Project
Which of the following diseases has been eradicated?
A) chicken pox
B) measles
C) smallpox
D) mumps
(Chapter 1) - ANSWER: C) smallpox
A pure culture refers to
A) a culture containing bacteria that all have the same shape
B) a culture which has never been used to inoculate a patient
C) a culture which causes only a single disease
D) a culture which contains only a single organism
(Chapter 1) - ANSWER: D) a culture which contains only a single organism
The first person to use a microscope to observe living cells was
A) Robert Hooke
B) Mathias Schleiden
C) Anton van Leeuwenhoek
D) Louis Pasteur
(Chapter 1) - ANSWER: C) Anton van Leeuwenhoek
A microorganism that causes disease is called
