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Chapter 7
Misc
100
This area of microbiology is concerned with the occurence of disease in the human population.
What is epidemiology?
100
This type of media is characterized by containing an undefined nutrient source (like beef extract) as one of its ingredients.
What is nonsynthetic or complex media?
100
These organisms are not considered living because they cannot reproduce without the help of host cells.
What are viruses?
100
This type of organic nutrient is essential to an organism's metabolism but cannot be made by the organism.
What is a growth factor?
100
This is the phase of the bacterial growth curve that shows the highest rate of of cell division.
What is the log phase?
200
This process involves the deliberate alteration (changing) of an organisms DNA to make it do something it may not ordinarily do.
Biotechnology?
200
This material comes from red algae is used to solidify media.
What is agar?
200
These long structures are the primary locomotion (movement) structures in bacteria.
What are flagella?
200
This type of organism can synthesize all of its required organic compounds from CO2 using energy from the sun.
What is an autotroph?
200
These types of organisms cannot live in the presence of oxygen because they lack the enzymes required to detoxify oxygen's toxic byproducts.
What are anaerobes?
300
This early microbiological pioneer is credited with developing the very first microscope.
Who is Anton van Leeuwenhoek?
300
This type of culture contains more than one known species.
What is a mixed culture?
300
This structure is used by gram negative bacteria for the transfer of DNA from cell to cell.
What are pili?
300
This type of passive transport involves the movement of water from an area of high concentration to an area of low concentration.
What is osmosis?
300
This staining procedure is used to distinguish between the cell walls of medically important bacteria.
What is the Gram stain or the Acid fast stain?
400
This process refers to the spontaneous generation of organisms from nonliving matter.
What is Abiogenesis?
400
This feature of a microscope is improved as the wavelength of light decreases.
What is resolution?
400
This structure is located outside the cell wall of bacteria and can take the form of a capsule or a slime layer.
What is the glycocalyx.
400
This is the name of the time period required for an organism to go through binary fission (from one cell to two).
What is generation time?
400
This structure wraps around spirochetes and helps to move them through the environment.
What are axial filaments?
500
This early microbiologist is most responsible for finally laying the theory of spontaneous generation to rest.
Who is Louis Pasteur?
500
This type of microscope takes advantage of differences in the density of the specimen to show good images of the inside of cells.
What is the phase contrast microscope?
500
These structures are produced by bacteria as a means of survival when they are exposed to environmentally adverse conditions.
What are endospores?
500
These types of organisms would prefer to grow at refrigeration temperatures.
What are psychrophiles?
500
This early scientist is credited with establishing the system of nomenclature that we used to name and classify organisms today.
Who is Carl von Linnae (Linnaeus)