Microbiology final 3

1.

1 point

which age groups were effected the most by the 1918 Spanish flu

70-76

2-5

50-56

18-25

2.

1 point

which of the following cause a pandemic

antigenic drift

antigenic shift

panic

all of the above

3.

1 point

normal flora will never cause an infection

True

False

4.

1 point

in order for the human body to produce red blood cells, iron is needed. pathogens also require iron. they secrete a protein called ________ which remove the iron from the host iron-transport proteins.

siderophores

streptokinase

M proteins

invasins

5.

1 point

Retroviridae carry _____ which uses viral RNA as a template to produce complimentary ______

ribosomes; mRNA

reverse transcriptase; ssDNA

revers trascriptase: dsDNA

ribosomes; dsDNA

6.

1 point

which of the following will result in the death of a bacteria infected with bacteriophage

the bacteriophage is a virulent phage

the bacteriophage is in the lytic cycle

the bacteriophage is a temperature phage

a and b

7.

1 point

the 1918 Spanish flu could be best described as a/an _______

epidemic

endemic

pandemic

non communicable disease

8.

1 point

which of the following allow the influenza virus to attach to specific host receptors

hemagglutination spikes

neuramindase spikes

fimbriae

all are

9.

1 point

which of the following term can be associated with lysed bacterial cells due to viral infection

shingles

lawn

plaque

icosahedron

10.

1 point

which of the following is true regarding the differences between bacteria and viruses

viruses are intracellular parasites, but most bacteria are not

bacteria are sensitive to interferon but viruses are not

bacteria have plasma membrane but viruses do not

bacteria generate ATP through fermentation and viruses uses the ETC

both a and C

11.

1 point

which of the following periods of disease is associated with zero symptoms

incubation period

prodromal period

period of convalescence

A and B

A and C

12.

1 point

streptococcus pyogenes produces _____ which can be used to treat heart attach victims

Fibrinolysin

mycolic acid

hyaluronidase

coagulase

13.

1 point

the antitoxin for diphtheria is sufficient to inactivate the toxin and kill the bacteria

True

False

14.

1 point

the rise in Herd immunity amongst population can directly be attributed to ____

improved handwashing

increased use of antibiotics

antibiotics-resistant microorganism

vaccinations

15.

1 point

streptococcus pyogenes, when infected with a prophage, can cause a red skin rash and fever. the rash is a sequal of

strep throat

herpes

chicken pox

influennza

16.

1 point

how would you measure the virulence of an organism

ID50

LD50

ID100

LD100

17.

1 point

what is the main reservoir for the ebola virus

armadillo

mouse

bats

mosquito

18.

1 point

which is NOT a symptom of tetanus

difficulty swallowing

flaccid paralysis

lock jaw

opisthotonus

19.

1 point

what traditional ceremony encouraged the spread of the virus during the MArch 2014 ebola outbreak

baptism

none of these

marriage

burial

20.

1 point

which is NOT and effective method for preventing Yellow Fever?

drain standing water

vaccine

insect repellant

all are

21.

1 point

pneumocystis pneumonia infection is common in AIDS patients? pneumocystis is a ________

subclinical disease

secondary infection

primary infection

sporatic disease

22.

1 point

following the release of Lipid A, which part of the brain does IL-1 act on causing a resetting of the body's "thermostat"?

cortex

hippocampus

hypothalamus

cerebellum

23.

1 point

which of the following statements provides the MOST significant support for the idea that virus are nonliving chemicals?

the are filterable

the are chemically simple

the cannot reproduce themselves outside of host

the cause disease similar to those caused by chemicals

24.

1 point

which is not a symptom of influenza

chills

fever

headache

muscular aches

all are

25.

1 point

Pseudomonas bacteria colonized the bile duct of a patient following his liver transplant surgery. this is an example of a ______-

latent infection

communicable disease

sporadic disease

nosocomial infection

26.

1 point

lysogenized staphylococcus aureus can be treated with a bisphenol called ___ this antiseptic is known to cause neurological problems in children under two year olds.

pHisoHex

Triclosan

Haxachlorophene

A and C

27.

1 point

if a person has a bacterial infection and is not responding to conventional antibiotic therapy, what would be a possible alternation solution?

none of these

antitoxins therapy

toxoid therapy

phage therapy

28.

1 point

in the ebola video, where was the ebola virus first isolated?

thailand

nigeria

congo

ireland

29.

1 point

when it comes to pathogenicity the portails of entry are factor to whether a microbe can cause an infection

True

False

30.

1 point

E coli. has a mutualistic relationship with humans, E.coli prevents organisms like shigella and salmonella from infection humans by accomplishing which of the following _____

production of bacterriocins

production of Vitamins B and K

production of siderophores

none of them

31.

1 point

Every year a new vaccine for influenza is developed for these reasons _____

to account for genetic drrift

missense mutations of the H and/ or N spikes

RNA viruses have a high rate of mutations

all are

32.

1 point

what type of toxin does clostridium botulinum produced?

an exotoxin called neurotoxin

endotoxin

cytotoxin

all of them

33.

1 point

what type of biological safety level (BSL) is required in order to conduct research on the ebola virus?

BSL-3

BSL-4

BSL-1

BSL-2

34.

1 point

endotoxins are ________

molecules that bind nerve cells

part of the gram-negative cell wall

excreted from the cell

associated with gram-positive bacteria

35.

1 point

which of the following measures can be taken to avoid infection from ingestion of botulisms toxin?

adding nitrate to prevent germination

increasing acidity to some food

boiling for at least 15 mins

advising parents not to feed their children honey

all of these

36.

1 point

what does dental plaque consist of

streptococcus mutans

dextran

actinomyces

all of them

37.

1 point

which host is considered the mixing vessel for the swine flu

humans

pigs

birds

none of them

38.

1 point

which organism is associated with "rice water stools"?

salmonella typhumurium

Escherichia coli

none of these

vibrio cholera

39.

1 point

which of the following is false about influenza vaccine production

vaccines can be produces in a matter of a few days

the injectable vaccine is grown in embryonated eggs

consists of an A strain of H1N1, A and B strains of H3N3

worldwide research is done to estimate what possible mutation have or will occured

40.

1 point

which vector causes the transmission of the filterable agent that caused the disease that impacted the attempts to build the panama canal?

mosquito

armadillo

enterovirus

norovirus