Viruses From Animal and Plants Influenza virus undergoes antigenic shift resulting in major antigenic changes by which of the following mechanisms? Somatic recombination of heavy and light chains Reassortment of RNA segments from different influenza viruses Expression of several different capsule types Changing the receptor binding canyon that docks with the host receptor Somatic recombination of heavy and light chains Reassortment of RNA segments from different influenza viruses 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 predominant lipid substance found in the viral envelope is phospholipids neutral fat all of these glycolipids phospholipids neutral fat all of these glycolipids 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 vitropexis ectodesmata viropexis vivopexis vitropexis ectodesmata viropexis vivopexis 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 West Nile virus can cause a disease in human beings that may be transmitted from an infected bird to a person by a mosquito. This is an example of endogenous infection nosocomial infection arthropod borne disease fomite borne disease endogenous infection nosocomial infection arthropod borne disease fomite borne disease ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants Which of the following characteristics would not be used to classify viruses? Symmetry Type of nucleic acid Type of cell wall structure Presence of an envelope Symmetry Type of nucleic acid Type of cell wall structure Presence of an envelope ANSWER DOWNLOAD EXAMIANS APP
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