types of pathogen

Question 1

how do viruses attack organisms

Answer 1

• take over cell metabolism
• viral genetic material is inserted in host cell DNA
• virus uses host cell to multiply
• new viruses burst out of cell, destroying it

Question 2

how do protoctista attack organisms

Answer 2

• take over cells and break them open as new generation emerge
• digest and use cell contents to reproduce

Question 3

how do fungi attack organisms

Answer 3

• digest living cells and destroy them
• some produce toxins

Question 4

how does bacteria attack organisms

Answer 4

• produce toxins
• these damage host cells by breaking down cell membranes
• or by damaging/inactivating enzymes
• or by interfering with host cells genetic material so it cannot divide