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IMSO 2008 Science Taiwan Second Round Theory I Question 20

IMSO Science · IMSO 2008 Science Taiwan Second Round Theory I

Question 20

Section A: choose the correct answer. The supplied key prints 2 points per question and 50 minutes. Source header says Qualifying Examinations; key says Taiwan (2).

What does the bottom image represent?

Question illustration
  1. host cell engulfing viruses
  2. new viruses bursting out of a host cell
  3. several viruses attacking a host cell
  4. viral hereditary material entering a host cell