LAB-VIRUSES Also do Chapter 6 Flashcards Preview

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Flashcards in LAB-VIRUSES Also do Chapter 6 Deck (46)
1

The 3 Respiratory Flu Viruses

-Influenza A
-Influenza B
-Parainfluenza Viruses (1,2,3,4)

2

Parainfluenza 1,2,3,4 are in the ________ family and genus _________.

Paramyxoviridiae family
Genus Paramyxovirus

3

Para influenza 1.2.3.4 are:
a) more severe than that caused by influenza
b)less severe than that caused by influenza

b) LESS severe

4

Parainfluenzas cause:
a) fever
b) liver disease
c) acute respiratory infections
d) Sore throat

c) acute respiratory infections

5

Parainfluenza 1 is associated with _____.

principle cause of croup

6

Parainfluenza 3 is associated with ____.

RSV causes
Bronchiolitis
Pneumonia

7

Parainfluenza 4 is associated with ____.

causes milder URT disease

8

Parainfluenza 1 and 2 occur in alternate year patterns T or F

T

9

T or F Influenza A, B, and parainfluenza are RNA viruses

T

10

Influenza A and Influenza B are in the _______ family and genus _____.

Orthomyxoviridiae family
Genus Influenza

11

Symptoms of Influenza A and B

-fever
-chills
-prostration
-anorexia
-muscle aches
-headache

***lasts 3 to 7 days

12

Which age group is more susceptible to death due to influenza?
a) Children (0-14)
b)Adolescents (15-19)
c)Young Adults (20-40)
d) Older Adults (41-80+)

c) Young Adults 20-40

13

What does RSV Stand For?? Need to know the spelling!

Respiratory Syncytial Virus

14

Respiratory Syncytial Virus is
a) DNA Virus
b) RNA Virus

b) RNA Virus

15

Respiratory Syncytial Virus is in the _____ family and genus ________.

Paramyxoviridiae family
genus pneumovirus

16

RSV spreads to the LRT in about 50% of children less than 8 months old causing bronchiolitis, pneumonia, and croup T or F

T

17

T or F It is never seen in the elderly and nursing homes

F

18

What viruses infect the gastrointestinal tract causing severe diarrhea?

Rotavirus & Norwalk virus

19

Norwalk virus and Rotavirus are:
a) DNA viruses
b) RNA viruses

b) RNA viruses

20

Rotavirus is in the _____family and genus ____.

Reoviridae family
Rotavirus genus

21

Norwalk is in the ________ family and genus ______.

Caliciviridae family
genus Calicivirus

22

T or F
Rotavirus is the major cause of worldwide gastroenteritis in infants and young children

T

23

T or F
50-80% of cases with viral gastroenteritis is caused by Rotavirus

T

24

Norwalk is transmitted by:

-poor hand washing
-foodborne, waterborne and shellfish transmission

25

Herpes Simplex virus is:
a) DNA Virus
b) RNA Virus

a) DNA Virus

26

Herpes simplex virus is in the _____ family and genus _____

Herpesviridae family
genus Simplexvirus

27

Difference between Herpes simplex 1 and 2

Herpes simplex 1-causes cold sores and fever blisters
Herpes simplex 2-causes genital herpes

28

T or F
Herpes 2 is lifelong

T

29

T or F
Herpes 2 is always active

F
blisters reactivate when triggered by stress, both physical and emotional

30

Herpes 2 is transmitted by touch T or F

F
transmitted by direct contact to mucosal membranes

31

Other important geniuses in the Herpesviridae family:
a)Varicellovirus
b)Cytomegalovirus
Which one of these two causes chickenpox and shingles?

a) Herpes Varicellovirus

32

Direct EIA (Enzyme Immunoassay) kits are used for:
a) testing for herpes
b) quick test for influenza A,B, RSV, and Rotavirus
c) quick test for RNA viruses

b) quick test for influenza a, b, RSV, and Rotavirus

**beneficial but a negative test does not rule out the infection, need further testing.

33

Examples of viruses

-rhinovirus (colds)
-Influenza (flu)
-RSV (Cold & croup)
-HIV
-Herpes simplex
-Varicella (chicken pox)
-Norwalk
-Mumps, Measles

34

Viruses are bigger than bacteria, fungi and parasites T or F

F, viruses are SMALLER

35

Viruses are not cells, but appear to be complex molecules composed of:
a) capsule and protein core
b)protein shell and a nucleic acid core
c) hard shell and CO2 core
d) no shell and a intracellular core

b) protein shell and a nucleic acid core

36

Nucleic acid core can be either DNA or RNA but not both T or F

T

37

Nucleic core is covered with a capsid and some with an envelope T or F

T

38

Viruses can be active outside the living host cells T or F

F, only active INSIDE

39

Multiplication of viruses steps:

-ABSORPTION onto the host cell
-PENETRATION into the host cell
-Virus UNCOATS itself
-Nucleic acid MULTIPLES & REASSEMBLES with nucleic strands
-RELEASE of many new viruses

40

In multiplication of viruses, the release of new virus particles can either occur by _____ (non enveloped virus) or by _____ (enveloped virus)

RUPTURE; BUDDING OFF

41

Detection methods for viruses include:
-Animal inoculation
-Egg inoculation
-Electron microscopy
-Cell culture
-Molecular techniques
-Antigen detection/antibody detection
T or F

T

42

Cytopathic Effects (CPE) indicates what?

INFECTION!!!

43

The 4 different cell lines for virus culturing:

-WI-38 (neonatal lung fibroblasts)
-African Green Monkey Kidney
-RHMK II (Monkey Kidney, Rhesus)
-PRK (rabbit kidney, new zealand white)

44

Which cell lines are useful for culturing which viruses?

-WI-38-Herpes Virus, Rhinovirus, adenovirus

-African Green Monkey Kidney- Influenzas + RSV

-RHMK-Influenzas + RSV

-PRK-Herpes Virus

45

Viruses are Obligate intracellular parasites that are ULTRAMICROSCOPIC T or F

T

46

Bacteria Viruses also known as Bacterial Fage T or F

T