Mastering Microbiology Ch. 30
"Bloodborne hepatitis" is caused by infection with hepatitis ________ virus.
B
Which of the following is the causal agent of gastric ulcers? A. Staphylococcus aureus B. Helicobacter pylori C. Escherichia coli O157:H7 D. Vibrio cholerae
Helicobacter pylori
Serious acute cases of diphtheria are treated with antibiotics and
diphtheria antitoxin.
Impetigo is due to an infection caused by
either staphylococcus aureus or streptococcus pyogenes
T/F The salt in mannitol salt agar inhibits the growth of Staphylococcus aureus.
false
T/F Viral hepatitis can result in acute kidney disease, followed by chronic kidney disease.
false
Erythromycin is applied to the eyes of newborns particularly to prevent
gonorrhea
Which of the following microbial groups is most resistant to desiccation due to their cell wall? A.gram-positive B. gram-negative C. viruses D. mycoplasmas
gram-positive
Isonicotinic acid hydrazide (INH) is an antibiotic used in the treatment of tuberculosis. It affects the synthesis of
mycolic acid.
A frequent symptom of the common cold is
nasal discharge
Hepatitis B and C are transmitted via the
parenteral route
The inflammatory response to Corynebacterium diphtheriae infection results in the production of a lesion called a
pseudomembrane.
T/F A patient with AIDS often dies of a variety of infections caused by opportunistic microorganisms.
True
T/F A sudden onset of a headache, vomiting, and a stiff neck are all symptoms of meningococcal meningitis
True
T/F Chickenpox, caused by a herpes virus, results in a systemic papular rash that quickly heals.
True
T/F Most viral respiratory diseases are highly contagious but not life threatening.
True
T/F Patients infected with Mycobacterium Tuberculosis in environments where drug resistance is expected or has already been identified usually have to take antibacterial drugs for six to nine months to ensure the infectious agent is completely killed.
True
T/F Reassortment of the genes of the influenza virus is facilitated by the fact that the genome is segmented.
True
T/F The loss of CD4 T-helper cells leads to the overt consequences of an HIV infection.
True
Which disease is the global top infectious disease killer, causing over 1.5 million deaths per year worldwide? A. diphtheria B. pneumococcal pneumonia C. tuberculosis D. whooping cough Submit
tuberculosis
Resident staphylococci are commonly found in the ________ and these seldom cause disease.
upper respiratory tract
Nongonococcal urethritis may be caused by the protozoan ________.
Trichomonas vaginalis
Meningitis can be caused by
viral, bacterial, or fungal infections.
The most prevalent human infectious diseases are caused by
viruses
Another name for pertussis is
whooping cough
Lymphogranuloma venereum is a sexually transmitted disease caused by distinct strains of ________.
Chlamydia trachomatis
Which organism causes the highest number of sexually transmitted diseases each year? A. Chlamydia trachomatis B. Neisseria gonorrhoeae C. Treponema pallidum D. Trichomonas vaginalis
Chlamydia trachomatis
Which of the following does NOT apply to bacterial pathogens affecting the respiratory tract? A. Most respiratory bacterial pathogens do not respond to antibiotic therapy. B. Humans are the only reservoir for most bacterial respiratory pathogens. C. Some often initiate secondary infections that can be life threatening. D. Most are normally transmitted person to person.
Most respiratory bacterial pathogens do not respond to antibiotic therapy.
Tuberculoid Hansens disease is caused by the pathogen
Mycobacterium leprae.
Of the following, which is the most common AIDS-associated opportunistic disease? A. Pneumocystis jirovecti pneumonia B. cryptosporidiosis C. cryptococcosis D. histoplasmosis
Pneumocystis jirovecti pneumonia
Which of the following are group A Streptococcus (GAS)? A. Streptococcus viridans B. Streptococcus pyogenes C. Streptococcus pneumonia D. Streptococcus agalactiae
Streptococcus pyogenes
The causative agent of streptococcal pharyngitis, also known as strep throat, is
Streptococcus pyogenes.
Rheumatic fever is
an autoimmune disease.
T/F The pink-red rash of scarlet fever may be caused by streptococcal pyrogenic exotoxins A, B, C, and F, which are coded for on a lysogenic bacteriophage.
true
Transmission of Mycobacterium leprae involves
both direct contact and the respiratory route.
Once a person has been infected with Neisseria gonorrhoeae, the individual
can be reinfected immediately because of the diversity of strains and frequency of mutation
Staphylococcus aureus produces ________, an enzyme that results in the accumulation of fibrin around the bacterial cells.
coagulase
The most common infectious disease is
common cold
Individuals who have an active case of tuberculosis may spread the disease simply by ________ uninfected individuals
coughing near
Which of the following is a cure for mumps? A. a vaccine B. an antibiotic C. an antiviral D. host antibodies
host antibodies
Several strains of ________ cause genital warts and cervical cancer.
human papillomavirus
Which of the following is NOT a sign of scarlet fever? A. sore throat B. fever C. rash D. impetigo
impetigo
Pus formation in skin lesions caused by Staphylococcus aureus infections is in part due to production of
leukocidin.
The HPV vaccine has been recommended for
males and females ages 11-26
A positive tuberculin test means a patient
may have active disease, been previously exposed to Mycobacterium tuberculosis, or may have a current inapparent infection.
Which of the following is NOT a staphylococcal disease? A. strep throat B. acne C. meningitis D. boils
strep throat
The presence of gram-positive diplococci in a sputum sample most likely indicates an infection of
streptococcus pneumoniae
Which of the following is TRUE of tuberculosis? A. the causative agent can remain dormant in macrophages B. it is caused by a virus C. it used to be very common, but is now rare D. very short antibiotic treatments of just a few days are usually sufficient for treatment
the causative agent can remain dormant in macrophages
How is the syphilis spirochete initially transmitted?
through tiny breaks in the skin epithelial layer
The diphtheria component of the DTaP vaccine is a(n)
toxoid