Microbiology (Sacred Heart University)
,1. An organism found on human skin that derives bene- B
fit from the host but does not harm it is described as
a(n)
a. parasite.
b. commensal.
c. opportunist.
d. pathogen.
e. mutualist.
2. Which of the following is NOT a benefit provided by E
gut microbiota?
a. inhibition of inflammation
b. synthesis of vitamins
c. host tissue development
d. enzymes that catalyze digestion of food
e. contributions to thin intestinal walls
3. Which of the following factors commonly contribute A
to dysbiosis?
a. emotional stress
b. carbohydrate catabolism
c. probiotics
d. bacteriocin
e. anti-inflammatory cytokines
4. Much of the is normally free from microbes E
in a healthy individual.
a. nose
b. mouth
c. skin
d. respiratory tract
e. genitourinary tract
5. Which condition is NOT related to obesity? E
a. diabetes
b. cardiovascular disease
c. cancer
d. nonalcoholic fatty liver disease
e. alcoholism
,6. The microbiome can influence obesity through A
a. regulating energy metabolism.
b. increasing intestinal inflammation.
c. creating a more diverse gut microbiome.
d. It does not influence obesity.
e. causing bacterial interactions.
7. Which of the following two genera are commonly D
used as probiotics?
a. Vibrio and Lactobacillus
b. Bacteroides and Escherichia
c. Enterococcus and Enterobacter
d. Bifidobacterium and Lactobacillus
e. Diphtheroids and Fusobacterium
8. Which part of the genitourinary tract is considered A
sterile?
a. kidney
b. bladder
c. distal urethra
d. genital tract
e. vagina
9. Which part of the body does NOT meet the external D
environment?
a. skin
b. mouth
c. gastrointestinal tract
d. blood
e. genitourinary tract
10. The hygiene hypothesis states that increased mod- C
ern exposure to can contribute to inflamma-
tory diseases such as asthma, inflammatory bowel
disease, colorectal cancer, and obesity.
a. animals
b. caves
c. soap
d. bugs
e. feces
, 11. An organism responsible for tooth decay is B
a. Pseudomonas aeruginosa.
b. Streptococcus mutans.
c. Neisseria meningitides.
d. Streptococcus pneumoniae.
e. Haemophilus influenzae.
12. Higher susceptibility to sexually transmitted dis- D
eases and lower reproductive success are related to
lower levels of which bacterial genus in the vagina
and endometrium?
a. Saccharomyces
b. Neisseria
c. Streptococcus
d. Lactobacillus
e. Bifidobacterium
13. Which of the following innate immunity mechanisms B
is mismatched with its associated structure or body
fluid?
a. lysozyme—tears
b. mucociliary elevator—intestines
c. highly acidic pH—stomach
d. acidic pH, sebum, salinity—skin
e. acidic pH—urogenital tract
14. Which of the following would contribute to a compro- C
mised immune system?
a. ibuprofen
b. a vegetarian diet
c. anticancer drugs
d. probiotics
e. vitamins
15. The major phagocytic cells in the body are D
a. T and B lymphocytes.
b. basophils and eosinophils.
c. erythrocytes and platelets.
,1. An organism found on human skin that derives bene- B
fit from the host but does not harm it is described as
a(n)
a. parasite.
b. commensal.
c. opportunist.
d. pathogen.
e. mutualist.
2. Which of the following is NOT a benefit provided by E
gut microbiota?
a. inhibition of inflammation
b. synthesis of vitamins
c. host tissue development
d. enzymes that catalyze digestion of food
e. contributions to thin intestinal walls
3. Which of the following factors commonly contribute A
to dysbiosis?
a. emotional stress
b. carbohydrate catabolism
c. probiotics
d. bacteriocin
e. anti-inflammatory cytokines
4. Much of the is normally free from microbes E
in a healthy individual.
a. nose
b. mouth
c. skin
d. respiratory tract
e. genitourinary tract
5. Which condition is NOT related to obesity? E
a. diabetes
b. cardiovascular disease
c. cancer
d. nonalcoholic fatty liver disease
e. alcoholism
,6. The microbiome can influence obesity through A
a. regulating energy metabolism.
b. increasing intestinal inflammation.
c. creating a more diverse gut microbiome.
d. It does not influence obesity.
e. causing bacterial interactions.
7. Which of the following two genera are commonly D
used as probiotics?
a. Vibrio and Lactobacillus
b. Bacteroides and Escherichia
c. Enterococcus and Enterobacter
d. Bifidobacterium and Lactobacillus
e. Diphtheroids and Fusobacterium
8. Which part of the genitourinary tract is considered A
sterile?
a. kidney
b. bladder
c. distal urethra
d. genital tract
e. vagina
9. Which part of the body does NOT meet the external D
environment?
a. skin
b. mouth
c. gastrointestinal tract
d. blood
e. genitourinary tract
10. The hygiene hypothesis states that increased mod- C
ern exposure to can contribute to inflamma-
tory diseases such as asthma, inflammatory bowel
disease, colorectal cancer, and obesity.
a. animals
b. caves
c. soap
d. bugs
e. feces
, 11. An organism responsible for tooth decay is B
a. Pseudomonas aeruginosa.
b. Streptococcus mutans.
c. Neisseria meningitides.
d. Streptococcus pneumoniae.
e. Haemophilus influenzae.
12. Higher susceptibility to sexually transmitted dis- D
eases and lower reproductive success are related to
lower levels of which bacterial genus in the vagina
and endometrium?
a. Saccharomyces
b. Neisseria
c. Streptococcus
d. Lactobacillus
e. Bifidobacterium
13. Which of the following innate immunity mechanisms B
is mismatched with its associated structure or body
fluid?
a. lysozyme—tears
b. mucociliary elevator—intestines
c. highly acidic pH—stomach
d. acidic pH, sebum, salinity—skin
e. acidic pH—urogenital tract
14. Which of the following would contribute to a compro- C
mised immune system?
a. ibuprofen
b. a vegetarian diet
c. anticancer drugs
d. probiotics
e. vitamins
15. The major phagocytic cells in the body are D
a. T and B lymphocytes.
b. basophils and eosinophils.
c. erythrocytes and platelets.
