Cell Bio 3

What do immature viruses lack?

• Envelope

• RNA

• Protein coat

• Genetic material

What process activates viral proteins inside immature viruses?

• Protease cleavage

• DNA replication

• RNA transcription

• Protein synthesis

Which cycles are combined in retrovirus replication?

• Lytic and lysogenic

• Lytic and mitotic

• Lysogenic and meiotic

• Lytic and binary fission

What is the genetic material of viroids composed of?

• Single circular strand of RNA

• Double-stranded DNA

• Protein and RNA

• Single linear strand of DNA

Viroids were previously thought to infect only which type of organism?

• Plants

• Animals

• Bacteria

• Fungi

What is unique about prions compared to viruses and viroids?

• They have no genetic material at all

• They have a protein coat

• They contain RNA

• They infect only plants

What is the normal structure of the protein involved in prions?

• Alpha-helix

• Beta-sheet

• Gamma-turn

• Z-form

What do prions convert normal proteins into?

• Beta-sheet structure

• Alpha-helix structure

• Double helix structure

• Circular RNA

Which of the following statements about viral growth is correct?

• Virions are created fully formed and do not grow after creation.

• Virions grow in size after being created.

• Virions use their own energy to grow.

• Virions divide to increase in number after creation.

What is the verdict for viruses regarding their use of energy?

• Maybe

• Fail

• Pass

• Unknown