Q.1.
The chemically detoxified vaccines are very efficacious and inexpensive.
Q.2.
Infection of HIV-1 is initiated by the binding of gpto CD4 and a co-receptor on host cells, triggering large scale conformational changes in gpthat eventually lead to membrane fusion.
Q.3.
In chemically detoxified vaccines the structural epitopes of the pathogen should be destroyed.
Q.4.
Neutralizing antibodies do not abrogate viral infectivity by which of the following mechanisms?
Q.5.
The chemical reaction in chemical detoxification should be reversible.
Q.6.
Which of the following toxin does not have ADP-ribosylation activity?
Q.7.
Influenza is a DNA virus that causes respiratory tract infections in mammals and some bird species.
Q.8.
Which of the following is the pathogen of Pertussis?
Q.9.
Antibiotic treatment is very effective in clearing Bordetella pertussis and the disease caused by it.
Q.10.
Which of the following is not the way in which antibodies participate in host defense?
Q.11.
Dengue virus belongs to which of the following category?
Q.12.
Which of the following is the only way to control pertussis?
Q.13.
The first recombinant vaccine produced targeted the surface antigen of which of the following virus?
Q.14.
Most viral vaccines are thought to work by which of the following technique?
Q.15.
Protein-based subunit vaccines initiate T cell-dependent activation of B cells.