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LSU- BIOL 1011 Exam 4
N/A
114
Microbiology
Undergraduate 3
12/03/2011

Additional Microbiology Flashcards

 


 

Cards

Term
A viron is
Definition
a complete, infectious virus particle
Term
The definition of lysogeny is
Definition
Phage DNA is incorporated into host cell's chromosome
Term
A clearing due to phage replication on a confluent "lawn" of bacteria is called a
Definition
Plaque
Term
Cytopathic effects are changes in host cells due to
Definition
viral infections
Term
A bacteriophage is a type of virus that
Definition
replicates within bacteria
Term
The togaviridae cause equine encephalitis and other diseases. These RNA viruses have a symmetrical capsid with 20 equilateral triangles and 20 edges and 12 points. Such a capsid is an example of a(n)
Definition
icosahedral capsid
Term
Describes a method by which an enelope virus leaves the host cell while acquiring an envelope.
Definition
Budding
Term
Latent animal viruses are present in cells as
Definition
proviruses
Term
The following steps occur during multiplications of the DNA virus like Herpes viruses. What is the third step?
Definition
Biosynthesis
Term
Viral envelopes are usually acquired by
Definition
budding through the membrane of the cell
Term
The neuramindase of influenza viruses assists in
Definition
release of virus through the cell membrane
Term
Animal viruses have attachment sites
Definition
over the entire surface of the capsid
Term
The retrovirus can synthesize DNA from RNA because it contains
Definition
the enzyme reverse transciptase
Term
The viruses of influenza, measles, and mumps are known for their ability to
Definition
clump red blood cells
Term
The nucleic acid of a virus encased in its protein coat is often referred to as the
Definition
nucleocapsid
Term
Yellow fever is a viral disease of the liver. As such, the yellow fever virus is classified as a
Definition
viscerotropic virus
Term
You have isolated an animal virus whose capsid is a tightly wound coil resembling a corkscrew or spring. Such a capsid is referred to as a(n)
Definition
helix
Term
Rous sarcoma virus causes a cancer in chickens. This is a(n) _______ virus, which is clasified in the ________ because it contains reverse transciptase.
Definition
RNA, retrovirus
Term
The rabies virus is a(n) _________ virus, which is classified in the ________ groups.
Definition
RHA rhabdoviridae
Term

All of the following are possible methods for cultivating viruses except

a. fertilized chicken eggs

b. tissue cultures

c. laboratory animals

d. blood agar medium

Definition
blood agar medium
Term
Which of the following is true of the influenza virus?
Definition
The viron undergoes antigenic variations
Term
The respiratory synctial virus takes its name from the
Definition
formation of giant cells in tissue culture cells
Term
Viruses that have spikes on their envelopes and contain both hemagglutin and neuraminidase and cause
Definition
influenza
Term
The fluid-filled vesicles occurring in cases of chickenpox
Definition
contain large amounts of virus
Term
An 8-year-old female has scabs and pus-filled vesicles on her face and throat. Three weeks earlier she had visited her grandmother who had shingles. What infection does the 8-year-old have?
Definition
chickenpox
Term
When is Respiratory Syncytial Virus (RSV) more commonly seen?
Definition
in most children under the age of 5
Term
SARS is caused by a
Definition
coronavirus
Term
The etiologic agent of warts is
Definition
Papillomavirus
Term
Which one of the following is not a dermotropic viral disease?
Definition
SARS
Term
The etiologic agent of fever blisters
Definition
Herpes simplex
Term
How can herpes simplex HSV-1 be prevented?
Definition
don't kiss someone who has a cold sore
Term
German measles is similar to measles becasue
Definition
a skin rash occurs in both diseases
Term
Herpes zoster, or shingles, is an adult disease caused by
Definition
the same virus that causes chickenpox
Term
Most cases of herpes zoster, or shingles, occur in
Definition
people over 50 years of age
Term

The MMR immunization program has significatnly affeted the annual incidence of all the following diseases except

A. rubella

B. German measles

C. mumps

D. measles

E. chickenpox

Definition
E. chickenpox
Term
A large, brick-shaped DNA virion is the responsible agent of
Definition
smallpox
Term
The prospect for developing a vaccine for the common cold are not promising because
Definition
many different viruses can cause the common cold
Term
All of the following characteristics apply to rhinoviruses exept
Definition
they are DNA viruses with helical symmetry
Term
The scientific name for mealses is
Definition
rubeola
Term

Each of the following diseases is caused by a member of the herpesviridae, except

a. chickenpox

b. shingles

c. smallpox

d. cold sores

Definition
smallpox
Term
All of the following statements are associated with parainfluenza except
Definition
this is a disease associated with sumer weather
Term
The rotavirus and echovirus are both associated with
Definition
grastointestinal distress
Term
Yellow fever is so-named because
Definition
it is accompanied by substancial jaundice
Term
The adjectives western equine, La Cross, and California all apply to
Definition
forms of arbovial encephalitis
Term
Hydrophobia is usually accompanied by
Definition
Term

Vaccines are available for all fo the following diseases, except

a. yellow fever

b. rabies

c. mononucleosis

d. polio

Definition
mononucleosis
Term
Infectious mnonucleosis is caused by Epstein-Barr virus. Another condition caused by this virus is
Definition
Burket's lymphoma
Term
If a woman has hepatitis B receive from an emergency blood transfusion, which of the following types of viruses will be present?
Definition
DNA virus
Term
Liver inflammation is a principal symptom of a disease transmitted by contaminated food and water as wella s by contact, arthropods, and sexual intercourse. This disease is
Definition
hepatitis A
Term
A woman with a fluctuating fever comes to a physician. She says that every bone in her body feels like it's breaking. Of the following, the patient is likely to be suffering from
Definition
dengue fever
Term
All hepatitis infections are commonly associated with
Definition
liver infections
Term

The Sabin polio vaccine consists of viruses inactivated with formaldehyde, whereas the Salk vaccine is made with attenuated viruses

true/fals

 

Definition
false
Term

Lassa fever and Marburg disease are typical of the viral diseases that affect the skin and cause severe pocklike lesions to form.

true/false

Definition
false
Term
The first antibiotic discovered was
Definition
penicillin
Term
The antibiotic streptomycin binds with tRNA^met at the 30S ribosome. For this information you can conclude that streptomycin
Definition
prevents transciption in prokaryotes
Term
In the presence of penicillin, what kills the bacteria?
Definition
It undergoes osmotic lyses
Term
Interferes with protein synthesis in microorganisms
Definition
chloramphenicol
Term
Teteracycline is the drug of choice in treating most
Definition
Rickettsial infections
Term
Penicillin G is most effective against
Definition
log phase Gram-positive bacteria
Term
Tetracycline antibiotics interfere with
Definition
protein synthesis
Term
Cephalosporins act by
Definition
interfering with cell-wall biosynthesis
Term
Amoxicillin is preferable to penicillin because it
Definition
is absorbed more easily from the intestine when taken orally
Term
The beta-lactam nucleus is the basic structure of the
Definition
penicillins
Term
In competitive inhibition, sulfanilamide is used by a bacterium in an abortive attempt to
Definition
form folic acid
Term
Isoniazid is a particular value
Definition
for treating tuberculosis
Term
All aminoglycoside antibiotics function by
Definition
attaching irreversibily to ribosome and preventing protein synthesis
Term
Members of the genus Streptomyces
Definition
produce many well-known antibiotics
Term
Both the cephalosporin and penicillin antibiotics
Definition
act on the cell wall of bacteria
Term

Which of the following antibiotics is not bactericidal?

a. aminoglycosides

b. cephalosporins

c. chloramphenicol

d. vancomycin

Definition
aminoglycosides
Term
Chloroquine, primaquine, and quinine are of value for the treatment of
Definition
cases of malaria
Term
What is the action of the antibiotic rifampin?
Definition
inhibiting RNA synthesis
Term
Use of antibiotics in animal feed leads to antibiotic-resistant bacteria because
Definition
the antibiotics kill susceptible bacteria, but the few that are naturally resistant live and reproduce, and their progeny repopulate the host animal
Term
What is the alternative drug used in treating syphilis and gonorrhea infection in penicillin sensitive patient?
Definition
tetracycline
Term
Which antibiotics does not inhibit cell wall biosynthesis?
Definition
neomycin
Term
A common feature of bacitracin and polymyxin B is that both antibiotics
Definition
are produced by Bacillus species
Term
What is the action of macrolides like erythromycin?
Definition
inhibiting protein synthesis
Term
Which antibiotic is not given to pregnant women because it stunts fetus bone growth?
Definition
tetracycline
Term

All of the following apply to the tetracycline antibiotics except

a. they are associated with discoloration of the teeth

b. they are used for rickettsial and chlamydial diseases

c. they are broad-spectrum antibiotics

d. they may cause aplastic anemia or the gray syndrome

Definition
d. they may cause aplastic anemia or the gray syndrom
Term

Caused by a member of the Picornaviridae

a. polio

b. infectious hepatitis

c. rabies

d. infectious mononucleosis

e. two of the above

Definition
two of the above
Term
The organism of gonorrhea
Definition
rarely contracted from a dry surface such as a toilet seat
Term
Which of these diseases can be transmitted to the fetus by an infected pregnant female?
Definition
syphilis
Term
The organism of leprosy
Definition
belongs to the same genus as teh tubercle bacillus
Term
The normal microbiota of the adult vagina consist primarily of
Definition
lactobacillus
Term
A chlamydial disease of the eyes
Definition
trachoma
Term
All of the following are characteristic signs of secondary syphillis except
Definition
gummae
Term
Infection due to Haemophilus dureyi may be identified by the isolation of
Definition
gram negative rods from the genital papules
Term

Which of the following pairs is mismatched?

a. yaws-gram negative cocci

b. gonorrhea- gram negatic cocci

c. chancroid- gram negative rod

d. syphilis- gram negative spirochete

Definition
yaws- gram negative rod
Term

What is not a cause of nongonococcal urethritis?

a. chlamydia

b. mycoplasma

c. neisseria

d. ureaplasma

e. none of the above

Definition
none of the above
Term
Nonsocomial diseases are those
Definition
acquired during hospitilization
Term
Species of Bacteroides
Definition
inhabit the large intestines and feces of most individuals
Term
The chancre is a painless, circular, purplish ulcer associated with
Definition
primary syphilis
Term
Salpingitis, a possible complication of gonorrhea, is observed as a(n)
Definition
blockage of fallopian tools
Term
The similarities of organisms and symptoms have led many microbiologists to believe there is a relationship between
Definition
Yaws and syphilis
Term
A 25 year-old male presented with fever, malaise, adn a rash on his chest, arms, and feet. Diagnosis was made based on serological testing. The patient then reported that he had an ulcer on his penis two months earlier. What stage of disease is the patient in?
Definition
secondary
Term
The greatest single cause of blindness in the world is
Definition
neonatal gonorrheal opthalmia
Term
Newborn's eyes are treated with an antibiotic when
Definition
always
Term

Which infection is caused by S. aureus?

a. pimples

b. sty

c. boil

d. carbuncles

e. all of the above

Definition
all of the above
Term
A 17-year-old male has pus-filled cysts on his face and upper back. Microscopic examination reveals gram-positive rods. This infection is caused by
Definition
propionibacterium acnes
Term

The special adherence qualities of Streptococcus mutans are enhanced by the presence of

 

Definition
levans and glucans
Term
Among the most common opportunistic bacteria that can cause nosocomial disease are all the following except
Definition
mycobacterium leprae
Term
All the following symptoms are associated with toxic shock syndrome except
Definition
slurred speech and facial paralysis
Term
All the following apply to bacterial conjunctivitis (pinkeye) except
Definition
eyelids crust during sleeping hours
Term
Staphylococcus aureus has been linked to all the following conditions except
Definition
bejel and pinta
Term
Pseudomonas aeruginosa is a(n)
Definition
endogenous organism that causes burn infections
Term
Staphylococcus aureus is associated with
Definition
toxic shock syndrome
Term
One of teh difficulties in controllin gonorrhea is the fact that
Definition
50% of female infections may be asymptomatic
Term
lesions, which destroy the elastic tissue and weaken major blood vessels
Definition
gummas
Term
Chlamydia trachomatis causes
Definition
nongonococcal urethritis
Term
Pseudomonas aeruginosa is a sever problem in burn infections. This is due in part to the fact that
Definition
this bacterium has developed resistance to many antibiotics
Term
Acute necrotizing ulcerative gingivitis (NGU) is another name for
Definition
tranch mouth
Term

-diagnosis depends on isolation of gram-negatic rods from pustules

-casued by a member of the genus Haemophilus

-ulcer has ragged edges and soft borders

Definition
chancroid
Term

-a form of nongonococcal urethritis

-sometimes called chlamydia

-organism has an unusually long generation time

-accompanied by substancial swelling of inguinal lymph nodes

-sometimes called the clap

Definition
chlamydial urethritis
Term

-tertiary stage involves the gumma

-nervous system involved in final stage

-due to a spirochette

-Hutchinson's triad associated with congenital form

Definition
syphilis
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