White Blood Cells And Immunity

Question 0

Pathogens reproduce rapidly unless destroyed. Which system destroys the pathogens with the help orb white blood cells?

Answer 0

Immune system.

Question 1

What are pathogens?

Answer 1

Microorganisms that cause disease

Question 2

What are the two type of white blood cell?

Answer 2

Phagocytes and lymphocytes

Question 3

What do phagocytes ingest?

Answer 3

Pathogens.

Question 4

When phagocytes detect things that are ‘foreign’ to the body what do they do?

Answer 4

Engulf the pathogens and digest them.

Question 5

Phagocytes are non-specific: what does this mean?

Answer 5

They attack anything that’s not meant to be there.

Question 6

What do lymphocytes produce?

Answer 6

Antibodies

Question 7

Every pathogen has what on it’s surface?

Answer 7

Antigens

Question 8

When lymphocytes come across a foreign antigen, what do they start to produce?

Answer 8

Produce antibodies which are proteins and they lock onto the invading pathogens. Antibodies are specific and won’t lock into any other type of antigen.

Question 9

Antibodies are rapidly produced and mark all similar pathogens. Where do antibodies float around?

Answer 9

In the plasma

Question 10

Lymphocytes stay around in the blood as memory cells after the original infection has been fought off. What do memory cells do?

Answer 10

Reproduce very fast if the same antigen enters the body for a second time.