HIV

Question 1

Has a marked preference that serves as receptor sites for the virus

Answer 1

CD4+

Question 2

HIV genome Gene: Gag
Viral gene product: _______________

Codes for core
structural (group ags)
proteins

Answer 2

P24, p18, p15

Question 3

HIV genome Gene: Polymerase
Viral gene product: ___________

Transcribes ssRNA into dsRNA

Answer 3

Reverse transcriptase
Protease
RNAse
Integrase

Question 4

HIV genome Gene: Envelope
Viral gene product: __________
Binds to CD4 receptors for infection

Answer 4

gp160

Question 5

HIV genome Gene: Envelope
Viral gene product: __________
Required for viral fusion of the cell

Answer 5

gp41

Question 6

HIV+ CD4+ count

Answer 6

> 200 mL3

Question 7

AIDS+ CD4+ count

Answer 7

<200 mL^3

Question 8

Seronegative period of HIV

Answer 8

6-8 weeks:

Question 9

First antibody detected in HIV

Answer 9

Anti-gp41

Question 10

Most widely used screening for HIV

Answer 10

ELISA Indirect

Question 11

Confirmatory test for HIV
Most widely used supplementary test for confirming reactive HIV ELISA Ab test

Answer 11

Western Blot Assay

Question 12

(+) result of Western Blot

Answer 12

gp41 band appears alone or

envelope (gp41, gp120, or gp160) appears in
combination with another HIV band

Question 13

Tests for Detecting HIV Gene

Answer 13

In situ hybridization
Filter hybridization
Southern blot hybridization – DNA
DNA amplification
PCR – test HIV RNA

Question 14

Test performed for the diagnosis of typhoid fever

Answer 14

Widal Test

Question 15

Widal Test Slide antigens:

Answer 15

O (somatic) and H (Flagellar)

Question 16

Widal Test: O positive

Answer 16

Typhoid fever

Question 17

Widal Test: O positive and H

Answer 17

Typhoid fever

Question 18

Widal Test: H

Answer 18

Past infection, Convalescence (Recovery), Exposure,
and Recent infection

Question 19

Widal Test: O, H, and PARA A

Answer 19

Typhoid and Paratyphoid fever

Question 20

Widal Test: PARA A, B, and C

Answer 20

Paratyphoid fever

Question 21

Test detection of specific IgM and IgG to Salmonella typhi.

Answer 21

Thypidot

Question 22

Positive reaction for thypidot

Answer 22

Color formation

Question 23

Thypidot
No color: IgG
No color IgM

Answer 23

No typhoid fever

Question 24

Thypidot
colored: IgG
No color IgM

Answer 24

Previous infection

Question 25

Thypidot
No color: IgG
Colored: IgM

Answer 25

Acute typhoid fever

Question 26

Thypidot
Colored IgM and IgG

Answer 26

Middle stage infection

Question 27

Significant Titer value for Weil felix test

Answer 27

> 160

Question 28

P.vulgaris antigen in weil felix

Answer 28

OX-19, OX-2

Question 29

P.mirabilis antigen in weil felix

Answer 29

OX-K

Question 30

Most widely used test for rubella (quantitative)

Answer 30

HEMEAGGLUTINATION INHIBITION

Question 31

Hepatitis A is also known as

Answer 31

Enterovirus 72