Which of the following will not support viral cultivation? O live lab animals O embryonated bird eggs O primary cell cultures O continuous cell cultures O blood agar QUESTION 27 Host range is limited by O type of nucleic acid in the virus. O age of the host cell. O type of host cell receptors on cell membrane. of the host cell. O O All of the choices are correct. QUESTION 28 Uncoating of viral nucleic acid O does not occur in bacteriophage multiplication. O involves enzymatic destruction of the capsid. O occurs during penetration in the multiplication cycle. O occurs before replication. All of the choices are correct. QUESTION 29 The core of every virus particle always contains O DNA O capsomers. O enzymes. O DNA and RNA. O either DNA or RNA QUESTION 30 Creutzfeld-Jacob disease is O caused by a chronic latent virus. O initiated by an oncogenic virus O caused by a viroid. O a spongiform encephalopathy of humans. O also called "mad cow disease". QUESTION