Pathogens are disease-causing viruses, bacteria, fungi or protists, which can infect animals and plants. Humans have an immune system, which can defend them from pathogens.
Which of these is not classed as a living thing?
The HIV virus is transmitted by which of these methods?
What effect does infection with the bacteria Chlamydia trachmatis have on the individual?
Their immune system will not work properly
They may suffer infertility
They suffer aches and fever
Which of these diseases can be treated with antibiotics?
Which of these body defences is found in the trachea?
What type of blood cell produces antibodies?
The surface of micro-organisms is covered in what specifically shaped molecules?
What cells, produced after a primary infection, provide immunity?
How is the disease Malaria transmitted?
Ash dieback is a disease caused by which type of pathogen?