Micro Chapters 20 & 13 Quizes

Study quizzes for final
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Alexander Fleming discovered that a certain kind of fungus produces this drug, which kills some bacteria.
Penicillin
Medically useful antimicrobial drugs are ____________.
Selectively toxic
The relative toxicity of a drug is expressed as ________.
Therapeutic index
This type of drugs inhibits the growth of bacteria.
Bacteriostatic
This type of drug kills bacteria.
Bacteriocidal
This type of antimicrobial affects a wide range of bacteria.
Broad-spectrum
Drugs that have a long ________ have to be administered less frequently.
Half-life
Some antibiotics can have potentially damaging side effects such as ________ damage.
Kidney
Microorganisms previously sensitive to a particular antimicrobial drug can acquire resistance through.....
1. Spontaneous mutation
2. Acquisition of new genetic material like a resistance plasmid.
3 mechanisms of action of antibacterial drugs.
1. Inhibiting cell wall synthesis
2. Inhibiting protein wall synthesis
3. Interfering with metabolic pathways
3 examples of emerging antimicrobial resistances.
1. MRSA
2. VRE
3. XDR-TB
The protein coat surrounding the nucleic acid in phages, animal, and plant viruses is called the _________.
Capsid
Viruses that cause disease are sometimes grouped according to their routes of ___________.
Transmission
Viruses cause diseases that can be classified as acute or _________.
Persistent (Chronic)
HSV-1 (Herpes Simplex Virus-1) is an example of what type of infection?
Latent
Prions are made up of
Protein
Viruses are
Non-living
Viruses only multiply within
Living cells
Some phages multiply inside bacteria and lyse the cells. This is a ________ infection.
Productive
These phages transfer their bacteria into the host cell, where it multiplies as a plasmid, integrates into the host chromosome, causing a latent infection.
Temperate phage
Phages infect
Bacteria
Viruses contain
Either DNA or RNA, but never both
Some animal viruses have a lipid bilayer surrounding the coat. These viruses are _______.
Enveloped
In animals, enveloped virions most often exit how?
By budding