1st Year Bio Test 2

Viruses can be named by

• disease they cause

• geographic area

• morphology

• all of the above

Which are not true about virus?

• Virus are host-specific

• Virus can be replicated outside host cell

• Virus cause the receptor of host cell to change shape

• Viruses can cause diseases

Viroids are composed of those except

• Single strand RNA

• Highly compact

• Protein coding genes

• Capable cause disease

Viroid shape

• Helical

• Spherical

• Circular

• Rod shape

Which is not the ability of viruses?

• Replicate

• Metabolise

• Integrate information from the environment

• All of the above

Choose the characteristics for viruses.

• Ribosomes

• Intercellular parasite

• Binary fission

• Plasma membrane

What part of a virus is the protein capsule that houses the genetic material (DNA/RNA)?

• Nucleus

• Capsid

• Glycoprotein

• Plasma membrane

What disease do prion cause?

• Mad cow disease

• Creutzfeldt-Jakob disease

• Heart disease

• All of the above

Bacteriophages are

• Helical viruses

• Polyhedral viruses

• Spherical viruses

• Complex viruses

What is not a role played by prokaryotes?

• Cause disease

• Mutualistic relationships

• Producers

• Viral infections