MCB2289 Introduction to Microbiology
Final Exam
Question 1
Which of the following cannot be and should not be treated with antibiotics?
Answers:
Strep throat
Tuberculosis
Common cold
Diphtheria
Question 2
Complex communities of microorganisms on surfaces are called
Answers:
Colonies
Biofilms
Biospheres
Flora
Question 3
All of the following are nitrogen-fixing bacteria except
Answers:
Cyanobacteria
Staphylococcus
Rhizobium
Azotobacter
Question 4
Legionella, Thiobacillus and Burkholderia are examples of
Answers:
Facultative anaerobic gram-negative rods
Gram-negative aerobic rods
Spirochetes
Anaerobic gram-negative cocci
Question 5
A complication of influenza that can occur in children and adolescents is a condition known as
Answers:
Reye Syndrome
Rheumatic fever
Mononucleosis
Hashimoto’s thyroiditis
Question 6
Toxoplasmosis is caused by the organism Toxoplasma gondii, which is a
Answers:
Bacterium
Protozoan
Virus
Fungus
Question 7
The only currently known STI that is transmitted by a protozoan is
Answers:
Giardiasis
Malaria
Trichomoniasis
Syphilis
Question 8
Which of the following is the causative agent for fungal meningitis, mostly in immunocompromised patients?
Answers:
Trypanosoma brucei
Listeria meningitis
Cryptococcus neoformans
Trypanosoma cruzi
Question 9
Tuberculosis is caused by an organism of the genus
Answers:
Klebsiella
Bordetella
Chlamydia
Mycobacterium
Question 10
Infections that may result from the use of catheters are classified as
Answers:
Iatrogenic infections
Local infections
Exogenous infections
Endogenous infections
Question 11
Vaginal infections that are resulting from an overgrowth of normal flora are called
Answers:
Endogenous infections
Chronic infections
Iatrogenic infections
Fatal infections
Question 12
The destruction of all microorganisms and their endospores is referred to as
Answers:
Disinfection
Degermation
Sanitization
Sterilization
Question 13
The degree or extent of disease-evoking power that a microorganism has is referred to as
Answers:
Virulence
Strength
Resistance
Competence
Question 14
Diagnosis of a UTI is a two-stage process that involves:
Answers:
collecting a urine sample and testing for antibiotic susceptibility of the organism
exploratory surgery and radiation therapy
collecting a blood sample and conducting a physical examination of the bladder
modifying the diet of the patient and conducting a physical examination of the urethra
Question 15
The toxic condition caused by the multiplication of bacteria in the blood is referred to as
Answers:
Bacteremia
Septicemia
Shock
Bloodborne infection
Question 16
The term bacteriostatic means that bacteria
Answers:
Are killed by the antimicrobial drug
Show continuous growth
No longer can multiply
No longer cause disease
Question 17
Rod-shaped bacteria, some of which are endospore forming, are referred to as
Answers:
Cocci
Bacilli
Spirals
Vibrios
Question 18
Which of the following organelles contain oxidative enzymes capable of oxidizing toxic substances?
Answers:
Mitochondria
Chloroplasts
Lysosomes
Peroxisomes
Question 19
Which of the following sites of the human body does not have a normal flora?
Answers:
Intestine
Skin
Vagina
Blood
Question 20
Which of the following is NOT a common characteristic used in the selection of an antimicrobial drug?
Answers:
Selective toxicity
Ease of delivery to the site of infection
Ability to administer intravenously
Potential for allergic reaction
Question 21
A relationship between organisms in which the waste product of one provides nutrients for another is called
Answers:
Mutualism
Competition
Synergism
Commensalism
Question 2
Which of the following is not considered to be a vehicle transmission?
Answers:
Airborne
Insect
Foodborne
Bodily fluid
Question 23
Strep throat is caused by which of the following organisms?
Answers:
Streptococcus pyogenes
Streptococcus pneumoniae
Streptococcus agalactiae
Streptococcus faecalis
Question 24
The three types of hepatitis virus that can be transmitted through sexual activity are
Answers:
A, B, and C
B, C, and D
A, B, and D
A, C, and D
Question 25
All of the following areas of the human body contain normal flora except
Answers:
Peritoneum
Urethra
Vagina
Mouth
Question 26
Giardiasis is a waterborne gastrointestinal disease caused by Giardia intestinalis, which is a(n)
Answers:
Protozoan
Bacterium
Fungus
Virus
Question 27
Beadlike chains of cocci formed after cell division along a single axis are called
Answers:
Diplococci
Streptococci
Tetrads
staphlococci
Question 28
Botulism is a disease caused by the production of a potent neurotoxin by bacteria of the genus
Answers:
Staphylococcus
Klebsiella
Salmonella
Clostridium
Question 29
The group of organisms that includes yeasts and molds are known as _______
Answers:
Algae
Bacteria
Fungi
Viruses
Question 30
The latent stage of syphilis, which may last for years, can occur ________.
Answers:
Between the secondary and tertiary stages
Between the primary and secondary stages
Between the initial and primary stages
At any stage of the disease
Question 31
Which of the following organisms is the causative agent for gonorrhea?
Answers:
Treponema
Neisseria
Mycoplasma
Ureaplasma
Question 32
Whooping cough is caused by
Answers:
Streptococcus pneumoniae
Bordetella pertussis
Haemophilus influenzae
Corynebacterium diphtheriae
Question 33
Animals that are capable of transmitting infectious disease are called
Answers:
Vectors
Pathogens
Carriers
Parasites
Question 34
The fungi most commonly associated with reproductive system infections are
Answers:
Aspergillus, Tinea-related species, Candida albicans
Candida species, Rhizopus, and Saccharomyces cerevisiae
Stachybotrys, Aspergillus niger, Microsporum species
Candida albicans, Tinea-related species, Epidermophyton floccosum
Question 35
CDC stands for
Answers:
Centers for Disease Control and Prevention
Children’s Disease Center
Central Disaster Control Center
Central Drug Evaluation and Control Center
Question 36
Meningococcal meningitis is caused by
Answers:
Neisseria meningitidis
Haemophilus influenzae
Mycobacterium tuberculosis
Listeria monocytogenes
Question 37
Which of the following infectious diseases is considered to be a reemerging disease?
Answers:
AIDS
Ebola
West Nile virus
drug-resistant tuberculosis
Question 38 Health care-associated infections are also known as
Answers:
Incidental infections
Accidental infections
Nosocomial infections
Secondary infections
Question 39 An inanimate object or substance capable of transporting pathogens from one medium or individual to another is referred to as a
Answers:
Vector
Fomite
Transporter
Transposon
Question 40
Which of the following viruses is the most widespread in the human population?
Answers:
Epstein-Barr
Hantavirus
HIV
Chlamydia
Question 41
Staphylococci and streptococci are best classified in the group of
Answers:
Gram-positive cocci
Gram-negative cocci
Gram-negative aerobic rods and cocci
Anaerobic gram-negative cocci
Question 42
Malaria is caused by a
Answers:
Virus
Bacterium
Helminth
Protozoan
Question 43
Which of the following is likely to be the most frequently used portal of entry for pathogens?
Answers:
Skin
Placenta
Parenteral route
Mucosal surfaces
Question 44
Which of the following stains is generally used for the diagnosis of tuberculosis (TB)?
Answers:
Simple stain
Gram stain
Acid fast stain
Negative stain
Question 45
Bacterial endotoxins are
Answers:
Proteins in the cell wall
Secreted into the environment
Components of the gram-positive cell wall
Components of the gram-negative cell wall
Question 46
All of the following are general metabolic or structural targets for antimicrobial drugs except
Answers:
Carbohydrate synthesis inhibition
Protein synthesis inhibition
Interference with nucleic acid synthesis
Interference with cell wall synthesis
Question 47
The agent causing West Nile encephalitis belongs to which of the following?
Answers:
Arboviruses
Parvoviruses
Herpesviruses
Paramyxoviruses
Question 48
The most common cause of infectious diarrhea in infants and children is
Answers:
Noroviruses
Adenoviruses
Rotaviruses
Caliciviruses
Question 49 The virulence factors of bacteria include
Answers:
Size, adhesion, resistance, mutation
toxins, exoenzymes, adhesion
Toxins, evasion of body defenses, motility, size
Colonization, chemotaxis, fermentation, toxins
Question 50
The causative agent for Lyme disease is a
Answers:
Spirillium
Spirochete
Vibrio
Diplococcus
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