T/F. Viruses are considered living organisms
False.
Viruses are NOT considered living organisms
Genetic material (DNA or RNA) are surrounded by...
a protein coat and a capsid
What are protozoans?
Single celled eukaryotic organisms
What are the steps in a viral replication?
1.Attachment
2.Penetration
3.Production of viral genetic information (DNA or
RNA) and proteins
4.Assembly of new viruses
5. Release of viruses from the host cell
Budding
Rupture of host cell membrane
Which are the vectors of the West Nile virus?
Mosquitoes
What are the four patterns of disease?
1.Sporadic diseases
2.Endemic diseases
3.Epidemic diseases
4.Pandemic
What do we call a Large-scale outbreak of an infectious disease?
Epidemic
T/F. Emerging disease is a condition with clinically distinct symptoms whose incidence has increased over the last two decades
True
Reemerging disease is a
A disease that has reappeared after a decline in incidence
Deer ticks are the vectors of which disease?
Lyme disease
Chemicals that inhibit the growth of a bacteria
Antibiotics
Lack a nucleus and other membrane-bound organelles
Prokaryotes
Bacteria comes in three shapes (name them)
Sphere (coccus) Rod (bacillus) Spiral (spirilla)
The relative ability of a pathogen to cause disease is called
Virulence
protozoan commonly
found in lakes and streams used
as sources of drinking water, even
those in pristine areas
Giardia
T/F. Antibiotics can Disrupt processes in bacteria but not in human cells, Prevent synthesis of cell walls and Block protein synthesis
True
Occur occasionally at unpredictable intervals
(Affect a few people within a restricted area)
Sporadic diseases
Always present and pose little threat
Endemic diseases
Occur suddenly and spread rapidly to many people
Epidemic disease
Global outbreak of disease
Pandemic
Virulence is determined by...
Ease and the degree and type of damage to cells
Bacteria helps decompose landfills
True