Introduction to Infectious Diseases

Question 1

He proved that DNA is the material responsible for transmission of genetic traits

Answer 1

Oswald Avery

Question 2

Usual causative organism for secondary infection of burns

Answer 2

Pseudomonas

Question 3

Invasiveness causes further growth at original sites only. True or False?

Answer 3

False. Distant sites also

Question 4

Distance  microbes   travel   into   the   RT   is \_\_\_ to their size
A. inversely proportional
B. directly proportional
C. not related 
D. none of the above

Answer 4

A

Question 5

Smaller bacteria that enter the respi tract are inhaled directly into the ___

Answer 5

alveolar lining

Question 6

What happens to large microbes (greater than 5 micrometers) in the respiratory tract?

Answer 6

They are trapped and swallowed. They do not cause disease anymore.

Question 7

Females are more prone (10x more than males) to UTI. Why?

Answer 7

shorter urethra

Question 8

4 ways microbes can utilise to enter the body. enumerate

Answer 8

Ingestion
Sexual transmission
Insect/animal bites
Injection

Question 9

Prions are composed of abnormal forms of host protein, Prion Proteins (PrP), that are normally found in ___

Answer 9

neurons

Question 10

What are Transmissible Spongiform Encelopathies?

Answer 10

Prions undergo conformational changesthat confers resistance to proteases

Question 11

another name for the clinical manifestation of human cannibalism (prion-caused)

Answer 11

kuru

Question 12

Bovine spongiform encephalopathy is also known as __

Answer 12

mad cow’s disease

Question 13

Composed of nucleic acid genome surrounded by capsidand sometimes encased in lipid membrane

Answer 13

virus

Question 14

Prions undergo conformational changes and aggregated deposit in neurons. These deposits are called __

Answer 14

intracellular and cytoplasmic inclusions

Question 15

Which is not a respiratory virus?
A.Adenovirus
B.Rhinovirus
C.Influenza virus
D.Rotavirus

Answer 15

D

Rotavirus - childhood diarrhea

Question 16

Which is not a digestive system virus?
A.Mumps virus
B.Rotavirus
C.Cytomegalovirus
D.Hepatitis A-E virus

Answer 16

C

Cytomegalovirus causes a systemic disease w/ hematopoeitic disorders.

Question 17

What do measles, herpes zoster and varicella have in common.

Answer 17

They are all systemic viruses with eruptions.

Question 18

Cytomegalovirus causes a systemic disease w/hematopoeitic disorders. Name two other ones that do this too.

Answer 18

HIV

Epstein-Barr virus

Question 19

Papillomaviruses, Polioviruses and JC Viruses have what in common?

Answer 19

warty growths

Question 20

virus associated with infectious mononucleosis

Answer 20

Epstein-Barr virus

Question 21

Brucella melitensis causes brucellosis, or __

Answer 21

undulant fever

Question 22

content of fungi cell wall

Answer 22

chitin

Question 23

content of fungi cell membrane

Answer 23

ergosterol

Question 24

enumerate two growth patterns of fungi

Answer 24

yeast and hyphae

Question 25

Some fungi exhibit thermal dimorphism. Which is false? A)At room temperature they are seen as hyphae B)At body temperature they are formed as yeast C)They are seen as hyphae or yeast depending on the environment they are in D)A and B

Answer 25

C

Question 26

sexual spores are called __

Answer 26

ascospores

Question 27

asexual spores are called __

Answer 27

conidia

Question 28

causative agent of athlete's foot

Answer 28

Tinea pedia

Question 29

Sporotrichosis is __ mycosis A. superficial B. subcutaneous C. deep

Answer 29

B

Question 30

smallest free-living bacteria, aerobic, has a special characteristic of metabolising glucose, lack cell wall identify

Answer 30

Mycoplasma

Question 31

small bacteria that can only grow inside cells like viruses;arthropods serve as vectors identify

Answer 31

Rickettsia

Question 32

motile, single-celled eukaryotes are also called __

Answer 32

protozoa

Question 33

False about malaria A. one of the most significat protozoans in our country B. transmitted by female Aedes aegypti mosquito C. has erythrocytic (infect RBC) and exo-erythrocytic (in the liver) stages

Answer 33

B Anopheles dapat

Question 34

identify infecting macrophages; from blood-sucking insects

Answer 34

Leishmania

Question 35

identify sexually tranmitted; causes trichomoniasis; usually found in papsmear

Answer 35

Trichomonas vaginalis

Question 36

Three mechanisms by which a microbe causes disease

Answer 36

1. Enter host cells and directly cause cell death 2. Release endotoxins or exotoxins 3. Induce host immune and inflammatory response to the micro

Question 37

* predilection to infect certain cell types * determined by host cell receptors for a particular virus identify

Answer 37

tropism

Question 38

What retrovirus protein binds to CD4+ T cells?

Answer 38

HIV gp120 protein

Question 39

Rhinoviruses bind to ___found in nasal mucosa

Answer 39

intercellular adhesion molecule-1