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microbiology exam one units 1&3
Terms in this set (35)
Which of the following is not considered a microorganism?
Living things ordinarily too small to be seen with the unaided eye are termed?
The microorganisms that do not have a nucleus in their cells are called?
Disease-causing microorganisms are called
Koch's postulates are criteria used to establish that
A specific microbe is the cause of a specific disease
The smallest and most significant taxon is
Which of the following is a scientific name?
Edward Jenner invented vaccination by studying what disease?
What is the causative agent of Bubonic Plague?
Which activity is an example of biotechnology?
Escherichia coli producing human insulin
Eukaryotic cells are
. Defined by the presence of a membrane bound nucleus
In viewing a microscopic specimen, immersion oil is used to
Decrease the refraction, . Increase the resolution.
Have positive charges.
Which term(s) refer(s) to bacterial morphology?
. Coccus AND Bacillus
5. Which is not true of the cytoplasmic membrane?
It consists mainly of a fixed, static phospholipid bilayer.
6. The cell wall of Gram-positive bacteria
Contains a thick layer of peptidoglycan.
Prokaryotic cells divide by a process known as
A. Are polysaccharide-encased prokaryote communities that are attached to surfaces. B. Are organized structures that contain open channels for passage of nutrients and water. C. Contribute to diseases like tooth decay. D. Can be exploited for bioremediation. E. All of the choices are correct.
In the growth curve of a bacteria population, the bacteria are rapidly increasing in number in the
Exponential (log) phase.
A hot tub would most likely contain
Small organic molecules that must be provided to bacteria in order for them to grow are called
Use pre-formed organic molecules as a carbon source AND as an energy source.
A medium that inhibits the growth of organisms other than the one being sought is termed a(n)
Viruses that infect bacteria are referred to as
The protein projections on the surface of a virus that are involved in attachment to the host cell are called
Outside of living cells, viruses are
A phage that replicates inside the host cell and then lyses its host during its release is a
Virulent or lytic phage.
The groups of organisms that a virus may infect is known as its
Once inside the host cell, phage DNA
Is replicated.B. Is transcribed.C. May get degraded by bacterial nucleases. D. All of the choices are correct.
Have an outer lipid bilayer membrane containing various proteins.
A key feature of all viral infections is the
Separation of viral nucleic acid from the capsid.
When an enveloped virus adsorbs to the host cell with its protein spikes, the virions are taken into the cell by the process of
In latent infections, the virions are
Only produced during reactivation.
Plant viruses enter the host plant via
Prions affect the
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