A researcher measures the virus particles in the fluid around two equal samples of host tissue. Each sample begins with the same number of infected cells. The results after 12 hours are shown.
| Sample | Lysis of infected cells | Virus particles in surrounding fluid (thousands per cm³) |
|---|---|---|
| A | occurred | 120 |
| B | prevented | 8 |
Using the results, predict how preventing lysis will affect the number of cells that become infected during the next 12 hours, and explain why.
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.