A virus enters cultured monkey kidney cells. Researchers measure the mean number of viral components inside each intact cell.
| Time after viral genetic material entered in hours | Copies of viral genetic material | Viral protein molecules | Complete virus particles |
|---|---|---|---|
| 0 | 1 | 0 | 0 |
| 3 | 400 | 60 000 | 0 |
| 6 | 3000 | 500 000 | 800 |
Which process explains why complete virus particles are present at 6 hours but not at 3 hours?
Copies of viral genetic material were packaged into newly made protein coats
Host-cell genetic material was packaged into the newly made viral protein coats
Viral genetic material was converted into viral proteins to make complete particles
Viral proteins copied themselves inside host cells to make complete particles
112 exam-style questions on Edexcel GCSE Biology 5.1 Health and communicable disease, covering 5.1.1 Communicable and non-communicable diseases, 5.1.2 Disease susceptibility interactions, 5.1.3 Pathogens as disease-causing organisms, 5.1.4 Common infections, 5.1.5 Spread and prevention of pathogens, 5.1.6 Lifecycle of a virus, and 5.1.7 Spread and prevention of STIs. Each one has a worked solution and a mark scheme showing where the marks go.