immunity

Question 1

Which one of the complement activation system is delayed on first exposure to the antigen

Answer 1

Antibody dependent

Question 2

Perforin & protease collectively called granzymes is produced by:

Answer 2

natural killer cells

Question 3

When antigen is presented on MHC-I then it is recognized by

Answer 3

Cytotoxic T cell

Question 4

INF-α and β are secreted by:

Answer 4

• Interferon alpha & beta are produced by white blood cells and certain connective tissue cells called fibroblasts.

Question 5

Neutrophils are

Answer 5

phagocytic and most abdundant wbc

Question 6

The damaged host cell secretes:

Answer 6

histamine, bradykinin and serotonin.
* These chemicals cause blood vessels to leak fluid into the tissues causing swelling.

Question 7

Hydrogen peroxide is released by which wbc:

Answer 7

neutrophil

Question 8

Cellular immunity constitutes:

Answer 8

Macrophages
T-lymphocytes

Question 9

Human immune deficiency virus destroy which of the following the immune cell/s?

Answer 9

CD4 cells
helper t cells

Question 10

Which of the following act as pyrogens?

Answer 10

Lipopolysaccharide

Question 11

lungs liver and kidney and lymph nodes contain

Answer 11

t lymphocytes

Question 12

2nd line of defense contain a specific type of cell called

Answer 12

natural killer

Question 13

how is the vaccine for measles and mumps developed?

Answer 13

by having the disease only

Question 14

which antibody is found in smallest amt

Answer 14

IgE

Question 15

NK cells are activated in response to

Answer 15

interferons and Macrophage derived cytokines