Disease And Imunity

Question 1

Pathegon

Answer 1

Is a disease-causing organism.

Eg. Bacteria, viruses, fungi or protoctists.

Question 2

Mechanical barriers

Answer 2

The skin acts a barrier to pathogens.
If it’s damaged, blood clots serve to quickly seal up the cut, prevent infections

Hairs in your nose trap particles from the air that could contain pathogens.

Question 3

Chemical barriers

Answer 3

Cells in your trachea and bronchi( airways and lungs) produce mucus, which trap pathogens

The stomach produces produces acids, which kill most pathogens that are swallowed.

Question 4

Phagocytes(white blood cells)

Answer 4

Some white blood cells detect things that are foreign to the body.eg pathogens- enfold them and digest them.
This process is called phagocytosis.

Question 5

Antibody production

Answer 5

Some white blood cells make proteins called antibodies. Antibodies are used to destroy pathogens.

Question 6

Active immunity

Answer 6

The defense against a pathogen by the production of antibodies in the body.