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Questions and Answers
What is the structure of a virus?
What is the structure of a virus?
- A bacterial entity with a rigid cell wall and tail fibres
- A cellular entity with organelles and ribosomes
- A plant entity with a mobile lipid bilayer membrane
- A non-cellular entity with a protein shell and nucleic acid (correct)
How do animal cells and plant cells differ in virus penetration?
How do animal cells and plant cells differ in virus penetration?
- Animal cells have a mobile lipid bilayer membrane and viruses enter via fusion
- Plant cells have a mobile lipid bilayer membrane and viruses enter via endocytosis
- Animal cells have a rigid cell wall and viruses enter via damaged cell walls
- Plant cells have a rigid cell wall and viruses enter via a vector (correct)
What is the origin of viruses according to the ancient theory?
What is the origin of viruses according to the ancient theory?
- Viruses are a result of a single origin event
- Viruses descend from free-living organisms, becoming parasitic
- Viruses have their origin in self-replicating molecules in the pre-cellular world (correct)
- Viruses originate from genetic material escaping from genomes of larger organisms
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