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