Microbiology Chapter 3
Prokaryotes exhibit these common features found in all living things. Identify the exception.
3. They have a simple organization.
One important ability that all cells must have to survive is maintaining a relatively stable internal environment. This is called
Prokaryotes and eukaryotes differ primarily with regard to the absence or presence of a
4. nucleus
Which scientists were the developers of the cell theory that all organisms are made of cells?
3. Schleiden and Schwann
All the following are characteristics of prokaryotes except
All the following characteristics apply to the prokaryotes except
2. they reproduce only by mitosis.
All of the following are part of the endomembrane system except
2. mitochondria
Which one of the following is not a function of the Golgi apparatus?
2. Synthesis of proteins
Prokaryotes go through the same kinds of energy reactions as eukaryotes, but without the double membrane organelles. Instead they use
3. the cytosol and cell membranes.
Many prokaryotic cells exhibit motility. This is generally by
4. uncovered flagella
How do bacterial cells control water balance?
The binomial system of nomenclature for microorganisms uses the
The correct way to write the name of a bacterium in the binomial system is
3. Escherichia coli.
In the scientific name Bacillus anthracis, the term Bacillus is the
3. genus name.
In the bacterial name Vibrio cholerae, the word cholerae represents the
Carl von Linné or Linnaeus was important to biology because of his work with classification of organisms in
2. Systema Naturae and binomial nomenclature.
Starting with Linnaeus, a hierarchical system was established for cataloging of living things. What did this mean at that time?
1. Grouping of species by shared and common characteristics.
Which is the correct listing of a hierarchical system from large to small for bacteria?
3. Kingdom, Division, Class, Order, Family, Genus, Specific ephitat.
Whittaker, Linnaeus and Haeckel all made substantial contributions to the
2. Science of taxonomy.
In 1866, Ernst Haeckel, devised a three kingdom system. One kingdom was Plants, the second was Animals. What was the third kingdom and what did it include?
3. Protists: included bacteria, protozoa, algae and fungi.
Which one of following did not attempt a classification of living organisms?
4. All the above tried to classify organisms.
In the five-kingdom system of classification, which one of the following is not one of the kingdoms?
2. Virus
Which one of the following taxonomic groups is first associated with the work of Woese?
3. Archaea
In Wittiker's five kingdom system, the fungi are
4. non-green, non-photosynthetic eukaryotes.
Bergey's Manual of Systematic Bacteriology may be used to
Carl Woese proposed a new classification system of three domains. What were these three domains?
The __________ are included in Bergey's Manual of Systematic Bacteriology.
3. bacteria
What tests are used to help identify bacteria today?
4. All of the above are currently used.
The length of an organism measuring 50 nanometers also may be expressed as
0.050 micrometers.
A nanometer (nm) is what part of a meter?
The smallest unit of size in the list below is the
4. nanometer
Which one of the following sequences exhibits increasing size?
4. Viruses to bacteria to protozoa
All the following groups are smaller than traditional bacteria except
2. yeasts.
The resolving power of the microscope reveals
two closely spaced objects to be seen clearly.
Which one of the following groups is not resolved with the light microscope?
4. Viruses
An ocular lens with a magnification of 10X and an objective lens of 40X has a total magnification of
4. 400X.
At the conclusion of the negative stain technique, one can observe
2. clear bacteria on a dark background.
The Gram stain technique is valuable in distinguishing
4. different types of bacteria.
Which of the following stains is used to identify Mycobacterium tuberculosis, with its thick waxy walls?
1. Acid fast stain
________ microscopy uses special filters and diaphragms to split the light beam and throw the rays slightly out of phase.
3. Phase-contrast
A microscope image that has a dark background, with only the live object being illuminated, is an example of
3. dark-field microscopy.
Dark-field microscopy is valuable for observing
3. live microorganisms.
The use of UV light to excite a dye is used with
4. fluorescence microscopy.
An advantage of the SEM over the TEM is
2. thin sections are not needed with the SEM.
requires that objects must be placed in a vacuum.
uses ultraviolet light as an energy source.
Fluorescence microscopy
permits magnifications of over 200,000X.
Transmission electron microscopy
is used to observe dye-tagged antibodies.
Fluorescence microscopy
has a special condenser to scatter light.
Dark-field microscopy
can be used to observe objects as small as 2.0 nm in diameter.
Transmission electron microscopy
is synonymous with the compound microscope.
Dark-field microscopy
involves electrons that are excited and move to a higher energy level
Fluorescence microscopy
is the best way to observe motile microorganisms.
Dark-field microscopy
uses ultra-thin sections of microorganisms.
Transmission electron microscopy
involves staining objects with heavy metals after sectioning.
Transmission electron microscopy
uses visible light as an energy source.
Bright-field microscopy
is used after Gram staining.
Bright-field microscopy
produces the illuminated organism on a dark background.
Dark-field microscopy
is used by diagnostic labs to identify many unknown microorganisms.
Fluorescence microscopy
uses immersion oil to increase resolution with the 100X objective.
Bright-field microscopy
produces an effect similar to seeing the moon at night.
Dark-field microscopy
aids in the visualization of spiral bacteria.
Dark-field microscopy
is used to observe a slice of bacterium.
Transmission electron microscopy
was pioneered by Ernst Ruska.
Transmission electron microscopy
. Non-photosynthetic, cell walls composed of chitin
Eukarya
Fungi
Photosynthetic; prokaryotic
Bacteria`
Includes Koalas in bamboo plants
Archaea
Plants
Animals
Escherichia coli
Bacteria
Have no membrane bound organelles
Cyanobacteria
Bacteria
Grass and trees
Eukarya
Plants
Have ribosomes
prokaryotes living under extreme conditions