ENV221H1 Lecture : ENV Lec 6.docx
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Related Questions
In theory, each plaque on a plate corresponds to
A.the endpoint | ||||||||
B.one infective virus in the initial suspension | ||||||||
C.millions of viruses in the initial suspension | ||||||||
D.one bacterium in the initial suspension | ||||||||
E.one mutated gene in one bacterium 2. When determining the number of bacterial virus particles in asuspension, why is the number obtained always less than the actualviral titer?
|
Allergens differ from antigens because ______________
Allergens do not involve the leukocytes, they simply stimulate the inflammatory response. |
Allergens are primarily plant derived while antigens are bacterial or viral in nature. |
Allergens produce an abnormally large immune response to what is an otherwise harmless particle. |
Allergens are only active seasonally and are generally harmless to the body. |
Plasma cells ____________________.
are small so that they slip between endothelial cells of capillaries to fight infection in surrounding tissues |
have a great deal of rough endoplasmic reticulum to dispose of ingested pathogens |
have a great deal of rough endoplasmic reticulum reflecting the fact that they secrete a tremendous amount of protein |
are large so that they can envelope their prey by phagocytosis |
Inflammation ___________________.
brings more leukocytes to the sight of infection |
is caused by viral activity to enhance the spread of disease |
is caused by bacterial activity to enhance the spread of disease |
slows the healing process with swelling that can impair bodily function |