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 Changing the receptor binding canyon that docks with the host receptor Somatic recombination of heavy and light chains Expression of several different capsule types Reassortment of RNA segments from different influenza viruses Changing the receptor binding canyon that docks with the host receptor Somatic recombination of heavy and light chains Expression of several different capsule types ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants The structural abnormality of cells is termed as metastasis anaplasia all of these hyperplasia metastasis anaplasia all of these hyperplasia ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants What is the function of positive strand in double stranded RNA viruses? Both (a) and (b) Production of ribosomes Synthesis of protein None of these Both (a) and (b) Production of ribosomes Synthesis of protein None of these ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants Viropexis takes place in the phagocytic vacuoles and is due to the action of enzymes all of these lysosomal lipase DNA gyrase lysosomal protease all of these lysosomal lipase DNA gyrase lysosomal protease 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 terminate transcripts when they copy host cell mRNA None of these use it to modify host enzymes that are recruited for viral replication have to make a positive strand copy that can be translated use it to terminate transcripts when they copy host cell mRNA None of these use it to modify host enzymes that are recruited for viral replication have to make a positive strand copy that can be translated ANSWER DOWNLOAD EXAMIANS APP
Viruses From Animal and Plants Animal viruses with capsids displaying helical symmetry include influenza all of these measles and mumps rabies influenza all of these measles and mumps rabies ANSWER DOWNLOAD EXAMIANS APP
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