Defece Against Disease

Question 1

Pathogen

Answer 1

A microorganism that can potentially cause disease

Question 2

Antigen

Answer 2

A molecule that triggers an immune response;usually large e.g. protein, polysaccharide, glycoprotein

Question 3

Antibody

Answer 3

A protein secreted by B lymphocyte; each one is specific to a different non self antigen

Question 4

B lymphocyte

Answer 4

A white blood cell that causes a humoral response to infections by secreting antibodies; matured in the bone marrow

Question 5

T lymphocyte

Answer 5

A white blood cell that causes a cellular response to infection; matures in the thymus

Question 6

Humoral response

Answer 6

Term given to describe the way in which B lymphocytes produce antibodies in response to infection

Question 7

Cellular response

Answer 7

Fern which describes the way in which T lymphocytes respond to an antigen presenting cell

Question 8

Plasma cell

Answer 8

Type of B lymphocyte which releases antibodies; formed when a B lymphocyte divides and produces clones

Question 9

Memory cell

Answer 9

Type of B lymphocyte that remains dormant in the blood and recognises antigens if they enter the blood again so the antibody producing cells are produced faster than before

Question 10

Antigen presenting cell

Answer 10

A “self”cell that has been infected; now has the pathogens antigen on its cell surface

Question 11

Histamines

Answer 11

Chemicals released to help phagocytes squeeze through the gaps in the capillary walls

Question 12

Lysosomes

Answer 12

Organelles present in large amounts inside phagocytes; contain enzymes to digest the pathogen

Question 13

Phagocyte

Answer 13

Type of white blood cell that ingests and digests pathogens

Question 14

Non specific inflammatory response

Answer 14

Term given to process involving phagocytes