Micro Exam 4

Micro Exam 4

All of the following are protective factors of the skin and its secretions EXCEPT
pyocyanin production.
Which of the following is NOT true of acne?
It can be treated by eliminating fatty foods from the diet.
All of the following are characteristic of Pseudomonas aeruginosa
-production of pyocyanin
-resistance to many types of disinfectants and antibiotics.
– rod-shaped.
– growth in moist environments
All of the following are characteristic of the Group A beta-hemolytic streptococci EXCEPT
methicillin resistance.
Staphylococcus aureus is responsible for all of the following EXCEPT
Exfoliative toxin is responsible for
scalded skin syndrome.
Which of the following leads to all the others?
staphylococcal infection
Which of the following is likely to spread MRSA among athletes?
-shared equipment
physical contact
taping gels
whirlpool baths
The greatest single cause of blindness in the world is
Newborns’ eyes are treated with an antibiotics
as a routine precaution.
Haemophilus influenzae is the most common bacterial cause of pinkeye.
The most common route of central nervous system invasion by pathogens is through
the circulatory system.
CSF contains high levels of complement and circulating antibodies to prevent infection of the brain and spinal cord.
Bacterial encephalitis and meningitis are difficult to treat because
many antibiotics cannot penetrate the bloodbrain barrier.
Which of the following statements about Neisseria meningitisis FALSE?
It is a gram-positive anaerobe.
The symptoms of tetanus are due to
The prodromal symptom(s) of bacterial meningitis is/are
mild cold symptoms
A 30-year-old woman was hospitalized after she experienced convulsions. On examination, she was alert and oriented and complained of a fever, headache, and stiff neck. Which of the following is most likely to provide rapid identification of the cause of her symptoms?
Gram stain of cerebrospinal fluid
Which of the following is treated with antibiotics?
streptococcal pneumonia
Microscopic examination of cerebrospinal fluid reveals gram-positive rods. What is the organism?
On June 30, a 47-year-old man was hospitalized with dizziness, blurred vision, slurred speech, difficulty swallowing, and nausea. Examination revealed facial paralysis. The patient had partially healed superficial knee wounds incurred while laying cement. He reported eating home-canned green beans and stew containing roast beef and potatoes 24 hours before onset of symptoms. The patient should be treated with
supportive care, including respiratory assistance.
A one-year-old boy was listless, irritable, and sleepy. Capsulated Gram-negative rods were cultured from his cerebrospinal fluid. His symptoms were caused by
Haemophilus influenzae.
Botulism and tetanus are caused by bacterial endospores commonly found in the soil.
Which of the following statements about sepsis is FALSE?
It usually is caused by gram-positive bacteria.
Which of the following is NOT a recognized form of anthrax?
Which of the following is NOT a characteristic of Bacillus anthracis?
produces endotoxins
The symptoms of gas gangrene are due to all of the following EXCEPT
Which of the following pairs is mismatched?
encephalitis – Ixodes (tick)
Unsanitary and crowded conditions increase the incidence of all of the following diseases EXCEPT
Rocky Mountain spotted fever.
A patient presents with inflammation of the heart valves, fever, malaise, and subcutaneous nodules at joints. The recommended treatment is
anti-inflammatory drugs.
Which of the following statements about rheumatic fever is FALSE?
It is rarely fatel, even when untreated.
Human-to-human transmission of plague is usually by
the respiratory route.
A characteristic symptom of plague is
swollen lymph nodes.
Which of the following leads to all the others?
bacterial growth in endothelial cells
Which of the following pairs is NOT correctly matched for Gram reaction?
Ehrlichia – gram-positive
Which of the following is evidence that the arthritis afflicting children in Lyme, Connecticut, was due to bacterial infection?
treatable with penicillin
The lower respiratory tract is protected by all of the following EXCEPT
competition with the normal flora of the lungs.
Which of the following is mismatched?
epiglottitis sore throat
Members of the group A streptococci (GAS) cause all of the following EXCEPT
The patient is suffocating because of the accumulation of dead tissue and fibrin in her throat. What is the etiology of the symptoms?
A patient has a paroxysmal cough and mucus accumulation. What is the etiology of the symptoms?
Which of the following does NOT cause otitis media?
Coxiella burnetii
Which of the following statements about mycoplasmal pneumonia is TRUE?
Treatment is tetracyclines.
Which of the following is mismatched?
Mycoplasma – gram-positive pleomorphic rod
All of the following can lead to a positive tuberculin skin test EXCEPT
being near someone with tuberculosis.
All of the following are used as first-line drugs for treating tuberculosis EXCEPT
A patient has fever, difficulty breathing, chest pains, fluid in the alveoli, and a positive tuberculin skin test. Gram-positive cocci are isolated from the sputum. The patient most likely has
pneumococcal pneumonia.
Legionella is transmitted by
airborne transmission.
Clostridium difficile-associated diarrhea is usually preceded by
extended use of antibiotics.
Which of the following statements about staphylococcal food poisoning is FALSE?
It can be prevented by heating foods to 50°C for 15 minutes.
The most common cause of traveler’s diarrhea is
E. coli
Gums bleeding while brushing ones teeth is most commonly associated with
Typhoid fever differs from salmonellosis in that in typhoid fever
the incubation period is much longer.
Many bacterial infections of the lower digestive tract are treated with
water and electrolytes.
Dental plaque is an example of
Bacterial intoxications differ from bacterial infections of the digestive system in that intoxications
have shorter incubation times.
Which of the following correctly lists the stages of tooth decay?
plaque accumulation, destruction of enamel, advancement of decay through enamel, decay in dentin, decay in tooth pulp
Helicobacter pylori can grow in the stomach because it
possesses an enzyme that neutralizes HCl.
Normal microbiota of the adult vagina consist primarily of
Cystitis is most often caused by
Escherichia coli.
One form of NGU is lymphogranuloma venereum caused by
Chlamydia trachomatis.
The pH of the adult vagina is acidic due to the conversion of ________ to ________ by bacteria.
glycogen; lactic acid
Which of the following is NOT a predisposing factors to cystitis in females?
poor personal hygiene
the proximity of the anus to the urethra
sexual intercourse
the length of the urethra
**None of the answers is correct; all of these are predisposing factors.
Which of the following is NOT a complication of gonorrhea?
pelvic inflammatory disease
** None of the answers are correct; all of these are potential complications of gonorrhea.
Which of the following diseases causes a skin rash, hair loss, malaise, and fever?
Which of the following statements about pelvic inflammatory disease is FALSE?
It can be caused by T. pallidum.
A 25-year-old man presented with fever, malaise, and a rash on his chest, arms, and feet. Diagnosis was 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?
What all can cause a positive tuberculin skin test?
Current tuberculosis infection
Previous tuberculosis infection
Immunity to tuberculosis

David from Healtheappointments

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