prcc burchell multiple choice final

Which of the following is a type of exotoxin?

Superantigen

all of these

Membrane Disrupting toxin

AB toxin

all of these

A pathogen that is able to establish an infection

in an otherwise healthy host is referred to as a:

primary pathogen

opportunistic pathogen

transient pathogen

secondary pathogen

primary pathogen

A disease that can be transmitted from host to

host by direct contact is a ____ disease.

communicable

contagious

nasty

noncommunicable

communicable

An abnormal increase in the number of cases

of a disease in a population is referred to as

a/an:

endemic

pandemic

sporadic

epidemic

epidemic

A disease in which there are periods of

pathogen inactivity or dormancy is a __

disease.

chronic

subacute

latent

acute

latent

An infection that involves multiple sites and/or

organs and tissues is classified as:

subclinical

localized

systemic

focal

systemic

The stage of disease development with mild

sign and symptoms is:

convalescence

incubation

illness

prodromal

prodromal

The 3 categories of vehicle transmission

include all of the following except:

water borne

food borne

new borne

air borne

new borne

A wound infection would be an example of

which portal of entry?

mucous membranes

skin

parenteral route

parenteral route

The most common portal of entry for human

pathogens is:

parenteral route

skin

mucous membranes

mucous membranes

Which of the following is not a virulence factor?

penetration of host cells

all are virulence factors

cell wall/membrane components

capsule

antigenic variation

enzymes

all are virulence factors

Which of the following exotoxin types include

an active portion and a binding portion.

superantigens

membrane disrupting toxins

AB toxins

endotoxins

AB toxins

What would be the most likely portal of exit for

a respiratory pathogen?

urination

a vector

defecation

respiration

respiration

Which of the following is responsible for

antigen recognition and presentation?

Rh factor

MHC 2

MHC 1

ABO group antigens

MHC 2

Which of the following complement

components has 2 jobs? Specifically the

outcome opsinization and the activation of C5.

C3a

C3b

C2b

C4a

C3b

One of the important functions of fever is to

increase the proliferation of ___.

white blood cells

red blood cells

antibodies

antigens

white blood cells

All 3 Activation Pathways are identical after the

activation of:

C5

C4

C3

C2

C3

Which enzyme is responsible for urea hydrolysis?

none of these

catalase

urease

ammonium phosphatas

What is the black precipitate in the SIM media?

thiosulfate reductase

hydrogen sulfide

cysteine desulf

urase

acetoin

hydrogen sulfide

Which enzyme causes effervescence

(bubbling) of hydrogen peroxide when added

to bacterial growth?

beta-galactosidase

catalase

sucrase

urease

catalase

The inhibitory substance/s in an EMB plate

is/are:

eosin-y and methylene blue

bile salts and crystal violet

high salt content

eosin-y and methylene blue

Antibodies passed in breast milk is an example

of:

Artificial Active Immunity

Artificial Passive Immunity

Natural Passive Immunity

Natural Active Immunity

Natural Passive Immunity

Which T cell type is responsible for controlling

an immune response and bringing ti to an end

when there is no longer circulating antigen?

T regulator/suppressor

T cytotoxic

T helper

T natural killer

T regulator/suppressor

In which immune response may signs and

symptoms of disease be reduced or absent?

Secondary

Primary

Secondary

Which antibody class is found on the surface of

B cells and is responsible for B cell activation?

M

D

E

A

G

D

Which antibody class can cross the placental

barrier?

E

A

G

M

D

G

Which antibody class is found bound to the

surface of Mast cells and basophils?

D

A

M

E

G

E

Which antibody class is a pentamer?

M

E

G

D

A

M

Which B cell daughter cell is responsible for

producing antibodies against the antigen that

activated the parent cell?

plasma cell

memory cell

plasma cell

What self antigen is found on all nucleated

body cells?

MHC 1

MHC 2

MHC 1

Which hypersensitivity involves cytotoxic T

cells and can take several days to develop?

4

2

1

3

4

The only antibody class which can cross the

placental barrier is _____.

IgA

IgE

IgG

IgD

IgG

The antibody binding sites are found on the

___ region of the antibody molecule.

constant

variable

variable

A microbe with bound BDP factors is the trigger for the _________ Pathway for complement activation.

Classical

Alternate

Lectin

Alternate

The 2 inflammatory mediators not present in

the Alternate Pathway are:

C2a, C4b

C2b, C4a

C3a, C5a

C5b, C6

C2b, C4a

IgG is the antibody class produced first in the

_________ immune response.

secondary

primary

secondary

Which of the following is not a goal of the

inflammatory response?

isolate the site

attract WBCs to the site

produce antibody

initiate repair

produce antibody

Which fungal division produces asexual

conidiospores and sexual ascospores?

Basidiomycota

Deuteromycota

Ascomycota

Zygomycota

Ascomycota

Which fungal division produces asexual

sporangiospores?

Zygomycota

Basidiomycota

Deuteromycota

Ascomycota

Zygomycota

Which of the following fungal pathogens

causes vaginitis? (this pathogen also causes

thrush)

Candida albicans

Coccidiodes immits

Basidiobolus ranum

Histoplasma capsulatum

Candida albicans

Which of the following Tineas affects the groin

region?

capitis

cruris

pedis

corporis

cruris

Which of the following could be described as a

reinforced cell membrane?

cytostome

contractile vacuole

oral groove

pellicle

pellicle

Which of the following protozoan pathogens

causes African Sleeping Sickness?

Trichura trichuriae

Trypanosoma cruzi

Trichomonas vaginalis

Trypanosoma brucei

Trypanosoma brucei

Which of the following is NOT transmitted via

the fecal/oral route?

Ascaris lumbricoides

Enterobius vermicularis

Dracunculus medinensis

Dracunculus medinensis

Larva invading the sin from the soil is the mode

of transmission for:

Ancyclostoma duodenale and Necatur

americanus

Wucheria bancrofti and Brugia malayi

Ancyclostoma duodenale and Necatur

americanus

Which of the following is not a genus that causes fungal tineas?

Epidermaphyton

Microsporum

Candida

Trichophyton

Candida

Which of the following is the causative agent

for pinworms?

Necator americanus

Enterobius vermicularis

Ascaris lumbricoides

Trichomonas vaginalis

Enterobius vermicularis

Trypanosoma cruzi is the causative agent for:

African Sleeping Sickness

Malaria

Toxoplasmosis

Chagas disease

Chagas disease

Which fungal division only has asexual spores?

Zygomycota

Basidiomycota

Deuteromycota

Ascomycota

Deuteromycota

Which of the following is a species of

Plasmodium which causes malaria?

all of these

falciparnum

malariae

ovale

vivax

all of these

Which protozoan disease that we discussed is

considered a sexually transmitted disease?

Giardiasis

Trichomoniasis

Toxoplasmosis

Trichenosis

Trichomoniasis

Which protozoan group is motile by flagella?

Sarcodina

Apicomplexa

Mastigophora

Ciliophora

Mastigophora

Which of the following diseases is not

transmitted by the fecal/oral route?

Typhoid

all of these

Syphilis

Cholera

Syphilis

Which of the following genera is responsible

for Leprosy and Tuberculosis?

Staphylococcus

Mycoplasma

Treponema

Mycobacterium

Streptococcus

Mycobacterium

Impetigo and Scalded Skin Syndrome can be

caused by bacteria that are often present in

our noses. That bacteria is:

Corynebacterium diphtheriae

Staphylococcus aureus

Clostridium perfringens

Streptococcus pyogens

Staphylococcus aureus

The causative agent for Lyme disease is:

Bordetella pertussis

Ehrlichia spp.

Bartonella quintana

Borellia bburgdorferi

Borellia bburgdorferi

Tularemia is transmitted by:

mosquitoes

ticks or mites

lice

kissing bug

ticks or mites

In the generalized animal virus: The stage in

which the viral nucleic acid is written into the

host cell's nucleic acid is:

Release

Assembly

Entry/Uncoating

Synthesis

Attachment/Adsorption

Synthesis

An animal virus may be released by exocytosis,

budding or lysis. A bacteriophage can only be

released by:

all of these

lysis

budding

exocytosis

lysis

Which of the following cannot be transmitted

by mosquitoes?

Ebola

Yellow Fever

West Nile

Dengue Fever

Ebola

Which of the following may be treated with a

post exposure vaccination?

Rabies

Rubella

HPV

Hantavirus Respiratory Syndrome

Rabies

Requires a co-infector to establish an infection

in a host best describes:

a satellite virus

a prion

none of these

a viroid

a satellite virus