Human Defense System

Question 1

Antibodies

Answer 1

Proteins produced by white blood cells in respond to antigens

Question 2

Antigens

Answer 2

Foreign molecule that causes production of an antibody

Question 3

Thymus gland

Answer 3

White blood cells mature here

Question 4

Types of T Cells

Answer 4

Killer
Helper
Suppressor
Memory

Question 5

Killer t cells

Answer 5

Produce perforin to attack abnormal body cells

Question 6

Helper T cells

Answer 6

Recognise antigen on white blood cells

Question 7

Suppressor

Answer 7

Inhibit immune response

Question 8

Memory T cells

Answer 8

Stimulate memory B cells + killer T cells

Question 9

Interferon

Answer 9

Protein which specifically attacks viruses

Question 10

Perforin

Answer 10

Attacks abnormal body cells

Question 11

Immunity

Answer 11

Ability to resist disease

Question 12

Pathogen

Answer 12

Anything that causes disease usually bacteria, virus or fungi

Question 13

B cells

Answer 13

Mature in bone marrow
Make antibodies
Retain memory of infection

Question 14

Plasma B cells

Answer 14

Produce antibodies

Each B cell recognises one specific antigen and produce one specific antibody

Question 15

Induced immunity

Answer 15

Ability to resist disease caused by specific pathogens by the production of antibodies

Question 16

Active immunity

Answer 16

Persons own antibodies are produced in response to antigen

Question 17

Passive immunity

Answer 17

Antibodies are obtained from another source

Question 18

Vaccine

Answer 18

A dead microbe that is injected into the body and triggers antibodies but does not cause the disease