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Microbiology Quizzes #1

Terms in this set (27)

What demonstrates the correct scientific notation of a bacterial organism?
Staphylococcus epidermidis
Any virus, bacterium, fungus, protozoan or worm that causes disease is called a
pathogen
__________________ state(s) that specific diseases are caused by specific kinds of
microorganisms.
. Germ theory of disease
A single water molecule contains which kind of bond?
polar covalent bonds
Phospholipids organize into a bilayer to form a cell membrane because they are:
amphipathic - they have both a hydrophobic and hydrophilic end
How are fungi able to cause lung infection and disease in humans?
Inhaled spores that are not destroyed by the immune system germinate and grow
Malaria infects 100s of millions of people and kills over a million African children each year.
The microorganism responsible is a(n):
Apicomplexan parasite
A defining feature of eukaryotic cells (and not found in prokaryotic cells) is the presence of what 2 things?
a nucleus; membranous organelles.
The bacterial cell wall is one part of the
cell envelope
. Lipopolysaccharides (LPS) are found in
gram negative bacteria
The bacterial cell wall is an attractive target for antibiotics because
animal cells do not have a cell wall
Which of the following is found in all bacterial cells?
nucleoid
. The most immediate result of destroying a cell's ribosomes would be
proteins would stop being synthesized
The ability of bacterial cells to swim toward favorable environments and away from
harmful environments is known as
chemotaxis
A mosquito can transmit a viral pathogen into humans. The mosquito is an example
of a(n)
vector
Methicillin-resistant Staphylococcus aureus (MRSA) is an example of a(n) _______________ infection that can be acquired during a hospital stay.
nosocomial
A disease that can spread to humans from nonhuman animals is known as a __________________ disease.
zoonotic
The core of every virus particle always contains
either DNA or RNA
Helical and icosahedral are terms used to describe the shape of a virus
capsid
What are steps in viral multiplication
-Penetration
- Replication
-Assembly
- Adsorption
Host range is limited by the
type of receptors on the host cell membrane
Viruses that consist of only a nucleocapsid are considered
naked viruses
Viruses that cause infection but result in alternating periods of activity (with symptoms) and
inactivity (without symptoms) are called
latent
What parts of a virus is/are not always present?
envelope
Are viral or bacterial infections easier to treat?
bacterial
The virus-induced damage to a host cell that can be seen with a light microscope is called
cytopathic effects
Viruses that infect bacteria are specifically called
bacteriophages
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