HOL BIOL 1020L Microbiology
Categorize each source of disease transmission as direct or indirect. #11 1. Handshake 2. Vector 3. Fomite 4. Kiss
1. Direct 2. Indirect 3. Indirect 4. Direct
Match each term with the best description. #11 Disease Contagious disease Infectious disease Vaccine 1. Condition caused by viruses, bacteria, parasites, and fungi. 2. Condition passes from person to person. 3. Disruption of the normal state that impairs bodily structure and function. 4. Substance that stimulates the production of antibodies.
1. Infectious disease 2. Contagious disease 3. Disease 4. Vaccine
Identify each statement as true or false. 1. Microbes are found in alkali pools. 2. Salt water is toxic to all microbes. 3. All microbes require oxygen. 4. Microbes are found in glaciers. #10
1. True 2. False 3. False 4. True
Categorize each term or phrase as related to pH or osmolarity. 1. Alkaliphile 2. Solution acidity 3. Hypertonic 4. Halotolerance 5. Solute concentration 6. Neutrophil #10
1. pH 2. pH 3. Osmolarity 4. Osmolarity 5. Osmolarity 6. pH
_____ optimally grow at a pH between 8.0 and 11.5. #10
Alkaliphiles
A _____ is an example of a fomite. #11
All of the above
Bacteria move by _____. #9
All of the above
Food may become contaminated by coming into contact with microbes in the _____. #12
All of the above
_____ are responsible for the indirect transmission of disease. #11
All of the above
_____ is a factor that limits the distribution of microbes. #10
All of the above
_____ is a form of functional media used to identify unknown microbes. #9
All of the above
_____ is a pathogenic bacteria associated with foodborne illness. #12
All of the above
What is an infectious disease? What is the role of a pathogen in the spread of disease? #11
Infectious disease is any condition that prevents the body from functioning normally. Infectious diseases are caused by pathogens. A pathogen can be a virus, bacteria, parasite, or fungi.
_____ bacteria have flagella distributed all over the surface of the cell. #9
Peritrichous
Infectious diseases are caused by microscopic agents called pathogens. #11 True/False
True
Motility is an important characteristic for classifying microbes. #9 True/False
True
Motility media is an example of differential media because it enables differences between microbes to be visualized. #9 True/False
True
One in six Americans become ill from foodborne pathogens every year. #12 True/False
True
Pasteurization reduces microbial numbers by rapidly heating then cooling a liquid. #12 True/False
True
Very acidic or alkaline solutions compromise microbial respiration. #10 True/false
True
Sterile swabs should be moistened with _____ before sampling potential fomite sources in the home. #11
distilled water
A _____ is a non-moving object responsible for the indirect transmission of disease. #11
fomite
A _____ bacteria has a single flagellum. #9
monotrichous
Motility media prevents the diffusion of _____ microbes. #9
non-motile
A _____ is a microscopic agent that causes disease. #11
pathogen
Motility media is inoculated by _____. #9
stabbing a culture into the media
_____ is the transfer of bacteria from one food item to another. #12
Cross contamination
Both microscopy and motility agar are used to confirm microbial mobility. Research techniques involving microscopic determination of mobility and explain why both microscopy and motility agar are required to determine motility in some microbes. #9
Determining the presence of motility is important for the classification and identification of microorganisms. Motility can be determined through microscopy, functional media, and staining.
_____ media contain an indicator that enables differences between microbes to be visualized. #9
Differential
Shared beverages are an ineffective mode of indirect disease transmission. #11 TRUE/FALSE
FALSE
S. epidermidis produces turbid motility gels after incubation indicating that it is non-motile. #9 True/False
False
All vaccines contain killed microorganisms. #11 True/False
False Vaccines contain either killed microorganisms or live attenuated organisms and their molecular components.
_____ media contain agent(s) that prohibit the growth of some microbes. #9
Selective
Controlling the spread of contagion within the home requires the identification of potential fomites. #11 TRUE/FALSE
TRUE
Surfaces with a high diversity of abundance of microbes should be disinfected frequently. #11 TRUE/FALSE
TRUE
A _____ is a positive result for bacterial motility when using motility agar. #9
turbid gel
E. coli produces a _____ after incubation in motility media. #9
turbid gel
A _____ is a substance that stimulates the immune system to produce antibodies. #11
vaccine
