Bios 242 Week 1 Concepts:
The Cell EXAM QUESTIONS
AND VERIFIED CORRECT
ANSWERS LATEST 2026-2027
Biofilms: - CORRECT ANSWER-Bacteria in some environments form into structures called
biofilms. These attach to a surface, accumulate into complex layers, and are cemented by
sugars, e.g., in diseases like ear infections, prostate infections, some lung infections.
The bacteria and archae are prokaryotes that do not have a nucleus or membrane-bound
organelles but are cellular microorganisms. - CORRECT ANSWER-The eukaryotes will have a
nucleus, mitochondria, etc. The viruses do not have cells and include AIDS virus and bacterial
viruses.
Medical Microbiology - This branch deals with microbes that cause diseases in humans and
animals. Researchers examine factors that make the microbes virulent and mechanisms for
inhibiting them.
Figure A. A staff microbiologist at the Centers for Disease Control and Prevention (CDC)
examines a culture of influenza virus identical to one that circulated in 1918. The lab is
researching why this form of the virus was so deadly and how to develop vaccines and other
treatments. Handling such deadly p - CORRECT ANSWER-
Public Health Microbiology and Epidemiology - These branches monitor and control the spread
of diseases in communities. Institutions involved in this work are the U.S. Public Health Service
(USPHS) with its main agency, the Centers for Disease Control and Prevention (CDC) located in
Atlanta, Georgia, and the World Health Organization (WHO), the medical limb of the United
Nations.
,Figure B. Two epidemiologists conducting interviews as part of the effort to curb the cholera
epidemic in Haiti. Pho - CORRECT ANSWER-Public Health Microbiology and Epidemiology -
Monitor and control the spread of diseases in communities
Immunology - This branch studies the complex web of protective substances and cells produced
in response to infection. It includes such diverse areas as vaccination, blood testing, and allergy.
Immunologists also investigate the role of the immune system in cancer and autoimmune
diseases.
Figure C. An immunologist and students freeze dry samples.
© Ariel Skelley/Blend Images LLC RF - CORRECT ANSWER-
Industrial Microbiology - This branch safeguards our food and water, and includes
biotechnology, the use of microbial metabolism to arrive at a desired product, ranging from
bread making to gene therapy. Microbes can be used to create large quantities of substances
such as amino acids, beer, drugs, enzymes, and vitamins.
Figure D. Scientists use a multispectral imaging system for inspection of chickens.
USDA-ARS/tephen R Ausmus
Agricultural Microbiology - This branch is concerned with the rela - CORRECT ANSWER-
Industrial microbiologists safeguard our food and water, and includes biotechnology,
Agricultural Microbiology - This branch is concerned with the relationships between microbes
and domesticated plants and animals. Plant specialists focus on plant diseases, soil fertility, and
nutritional interactions. Animal specialists work with infectious diseases and other associations
animals have with microorganisms.
, Figure E. Plant microbiologists examine images of alfalfa sprouts to see how microbial growth
affects plant roots.
USDA/Scott Bauer
Environmental Microbiology - These microb - CORRECT ANSWER-
Environmental Microbiology - These microbiologists study the effect of microbes on the earth's
diverse habitats. Whether the microbes are in freshwater or saltwater, topsoil or the earth's
crust, they have profound effects on our planet. Subdisciplines of environmental microbiology
are aquatic, soil, and geomicrobiology, and astrobiology.
Figure F. Researchers collect samples and data in Lake Erie.
© Christopher Berkey/epa/Corbis - CORRECT ANSWER-
Public Health Microbiology and Epidemiology: Monitor and control the spread of diseases in
communities.
Medical Microbiology: Deals with microbes that cause diseases in humans and animals.
Environmental Microbiology: Study the effect of microbes on the earth's diverse habitats.
Immunology: Body's defense against microbial invasion - CORRECT ANSWER-
Historical Foundations of Microbiology
The early years of microbiology brought the first observations of microscopic structures and
microbial life that are invisible to the naked eye. The initial efforts were placed in organizing the
microscopic organisms into logical classifications. Listed below are some key historical findings.
Golden Age of Microbiology
The Golden Age of Microbiology extended from the mid-19th to the early 20th century (1857-
1907). Microbiologists competed to be the first to - CORRECT ANSWER-Antoni van
Leeuwenhoek, a Dutch merchant, made the first simple microscope with magnification of
around 300x in order to examine the quality of cloth. His passion to view things under the
microscope then extended to other things, including many microorganisms he called
animalcules. He reported the existence of protozoa in 1674 and of bacteria a few years later.
The Cell EXAM QUESTIONS
AND VERIFIED CORRECT
ANSWERS LATEST 2026-2027
Biofilms: - CORRECT ANSWER-Bacteria in some environments form into structures called
biofilms. These attach to a surface, accumulate into complex layers, and are cemented by
sugars, e.g., in diseases like ear infections, prostate infections, some lung infections.
The bacteria and archae are prokaryotes that do not have a nucleus or membrane-bound
organelles but are cellular microorganisms. - CORRECT ANSWER-The eukaryotes will have a
nucleus, mitochondria, etc. The viruses do not have cells and include AIDS virus and bacterial
viruses.
Medical Microbiology - This branch deals with microbes that cause diseases in humans and
animals. Researchers examine factors that make the microbes virulent and mechanisms for
inhibiting them.
Figure A. A staff microbiologist at the Centers for Disease Control and Prevention (CDC)
examines a culture of influenza virus identical to one that circulated in 1918. The lab is
researching why this form of the virus was so deadly and how to develop vaccines and other
treatments. Handling such deadly p - CORRECT ANSWER-
Public Health Microbiology and Epidemiology - These branches monitor and control the spread
of diseases in communities. Institutions involved in this work are the U.S. Public Health Service
(USPHS) with its main agency, the Centers for Disease Control and Prevention (CDC) located in
Atlanta, Georgia, and the World Health Organization (WHO), the medical limb of the United
Nations.
,Figure B. Two epidemiologists conducting interviews as part of the effort to curb the cholera
epidemic in Haiti. Pho - CORRECT ANSWER-Public Health Microbiology and Epidemiology -
Monitor and control the spread of diseases in communities
Immunology - This branch studies the complex web of protective substances and cells produced
in response to infection. It includes such diverse areas as vaccination, blood testing, and allergy.
Immunologists also investigate the role of the immune system in cancer and autoimmune
diseases.
Figure C. An immunologist and students freeze dry samples.
© Ariel Skelley/Blend Images LLC RF - CORRECT ANSWER-
Industrial Microbiology - This branch safeguards our food and water, and includes
biotechnology, the use of microbial metabolism to arrive at a desired product, ranging from
bread making to gene therapy. Microbes can be used to create large quantities of substances
such as amino acids, beer, drugs, enzymes, and vitamins.
Figure D. Scientists use a multispectral imaging system for inspection of chickens.
USDA-ARS/tephen R Ausmus
Agricultural Microbiology - This branch is concerned with the rela - CORRECT ANSWER-
Industrial microbiologists safeguard our food and water, and includes biotechnology,
Agricultural Microbiology - This branch is concerned with the relationships between microbes
and domesticated plants and animals. Plant specialists focus on plant diseases, soil fertility, and
nutritional interactions. Animal specialists work with infectious diseases and other associations
animals have with microorganisms.
, Figure E. Plant microbiologists examine images of alfalfa sprouts to see how microbial growth
affects plant roots.
USDA/Scott Bauer
Environmental Microbiology - These microb - CORRECT ANSWER-
Environmental Microbiology - These microbiologists study the effect of microbes on the earth's
diverse habitats. Whether the microbes are in freshwater or saltwater, topsoil or the earth's
crust, they have profound effects on our planet. Subdisciplines of environmental microbiology
are aquatic, soil, and geomicrobiology, and astrobiology.
Figure F. Researchers collect samples and data in Lake Erie.
© Christopher Berkey/epa/Corbis - CORRECT ANSWER-
Public Health Microbiology and Epidemiology: Monitor and control the spread of diseases in
communities.
Medical Microbiology: Deals with microbes that cause diseases in humans and animals.
Environmental Microbiology: Study the effect of microbes on the earth's diverse habitats.
Immunology: Body's defense against microbial invasion - CORRECT ANSWER-
Historical Foundations of Microbiology
The early years of microbiology brought the first observations of microscopic structures and
microbial life that are invisible to the naked eye. The initial efforts were placed in organizing the
microscopic organisms into logical classifications. Listed below are some key historical findings.
Golden Age of Microbiology
The Golden Age of Microbiology extended from the mid-19th to the early 20th century (1857-
1907). Microbiologists competed to be the first to - CORRECT ANSWER-Antoni van
Leeuwenhoek, a Dutch merchant, made the first simple microscope with magnification of
around 300x in order to examine the quality of cloth. His passion to view things under the
microscope then extended to other things, including many microorganisms he called
animalcules. He reported the existence of protozoa in 1674 and of bacteria a few years later.
