Viruses From Animal and Plants Influenza virus undergoes antigenic shift resulting in major antigenic changes by which of the following mechanisms? Reassortment of RNA segments from different influenza viruses Somatic recombination of heavy and light chains Expression of several different capsule types Changing the receptor binding canyon that docks with the host receptor Reassortment of RNA segments from different influenza viruses Somatic recombination of heavy and light chains Expression of several different capsule types Changing the receptor binding canyon that docks with the host receptor ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants The penetration of animal viruses into attached cells occur by mechanisms consisting of engulfment of whole virions by the cells in a phagocytic process called vivopexis ectodesmata viropexis vitropexis vivopexis ectodesmata viropexis vitropexis ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants What can be coated to the plastic dish if an ELISA is performed to directly detect polio virus? Patient serum Polio capsid protein Anti-polio antibody Colored substrate Patient serum Polio capsid protein Anti-polio antibody Colored substrate ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants Which type of interferon is produced by virus-infected cells? α β None of these Both (a) and (b) α β None of these Both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants Negative strand ssRNA viruses need to have a preformed replicase when they invade a mammalian cell because they use it to modify host enzymes that are recruited for viral replication use it to terminate transcripts when they copy host cell mRNA None of these have to make a positive strand copy that can be translated use it to modify host enzymes that are recruited for viral replication use it to terminate transcripts when they copy host cell mRNA None of these have to make a positive strand copy that can be translated ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants Mumps vaccine is prepared from the cultures of healthy calves chick fibroblasts sheep African green monkey cells healthy calves chick fibroblasts sheep African green monkey cells ANSWER DOWNLOAD EXAMIANS APP
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