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Immunity and ELISA Quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Active immunity is characterized by

a)

Immediate protection

b)

Short duration

c)

Antibody production by host

d)

No memory

2.

Passive immunity provides

a)

Long-lasting immunity

b)

Immunological memory

c)

Immediate protection

d)

Delayed response

3.

Example of passive immunity is

a)

BCG vaccine

b)

MMR vaccine

c)

Tetanus toxoid

d)

Anti-tetanus serum

4.

Active immunity is usually acquired by

a)

Antiserum administration

b)

Placental transfer

c)

Infection or vaccination

d)

Immunoglobulin injection

5.

Passive immunity lacks

a)

Antibodies

b)

Protection

c)

Immediate effect

d)

Immunological memory

6.

ELISA is mainly used for detection of

a)

Antigens or antibodies

b)

Bacterial motility

c)

Fungal spores

d)

Parasites only

7.

Principle of ELISA is based on

a)

Antigen-antibody reaction with enzyme label

b)

Complement fixation

c)

Precipitation

d)

Flocculation

8.

Common enzyme used in ELISA is

a)

Coagulase

b)

Oxidase

c)

Horseradish peroxidase

d)

Catalase

9.

Indirect ELISA is mainly used to detect

a)

Antigen

b)

Antibody

c)

Complement

d)

Cytokines

10.

Sandwich ELISA is used for detection of

a)

Antibody only

b)

Antigen only

c)

Immune complexes

d)

Haptens

11.

Mode of transmission via contaminated food is called

a)

Direct contact

b)

Vector borne

c)

Feco-oral transmission

d)

Droplet spread

12.

Transmission of infection through droplets occurs in

a)

Tuberculosis

b)

Cholera

c)

Typhoid

d)

Malaria

13.

Vector borne diseases are transmitted by

a)

Mosquitoes and flies

b)

Food and water

c)

Air droplets

d)

Direct contact

14.

Vertical transmission refers to spread from

a)

Mother to fetus

b)

Person to person

c)

Animal to human

d)

Environment to human

15.

Herd immunity refers to

a)

Individual immunity only

b)

Immunity in animals only

c)

Resistance of a community to infection

d)

Passive immunity

16.

Herd immunity mainly protects

a)

Immune individuals

b)

Non-immune individuals

c)

Only children

d)

Only elderly

17.

Heterophile antigens are

a)

Species-specific antigens

b)

Identical antigens in different species

c)

Self antigens

d)

Tumor antigens

18.

Paul-Bunnell test detects heterophile antibodies in

a)

Typhoid fever

b)

Infectious mononucleosis

c)

Brucellosis

d)

Malaria

19.

Adjuvants are substances that

a)

Reduce immune response

b)

Enhance immune response of antigens

c)

Kill microorganisms directly

d)

Act as antibodies

20.

Commonly used vaccine adjuvant is

a)

Aluminium hydroxide

b)

Penicillin

c)

Formalin

d)

Phenol