BIOL 112 EXAM 2 QUESTIONS
WITH 100% ACCURATE
ANSWERS.
If a human has a serious bacterial infection, which bacterial target or
targets could be useful targets when designing bacterial antibiotics?
a. 40S ribosomal subunits
b. gyrase
c. a peptidoglycan biosynthesis enzyme
d. B and C
e. A, B and C -- Correct Answer ✔✔ d. B and C (gyrase, a peptidoglycan
biosynthesis enzyme)
With regards to modern medicine, pathogenicity and pharmacology, it
is very important that one understand one fundamental concept. That
concept is that researchers will look for and attack enzymes, polymers,
chemicals that the pathogen ____ and that the host ____.
a. does not have; does not have
b. has; does not have
c. does not have; has
d. has; has
e. none of the above are true -- Correct Answer ✔✔ b. has; does not
have
Using the diagram below (malarial life cycle), one could surmise that
there are many medical indicators or prodromes (early symptoms) that
one may have contracted malaria. The medical sign(s) or condition(s)
readily apparent in THIS diagram is/are _______.
a. hemolytic anemia or medical condition
, b. acute hepatic disease, cellular intrusion or medical condition
c. dysentery or dysentery-like medical condition
d. legionnaires' disease
e. Both A and B -- Correct Answer ✔✔ a. hemolytic anemia or medical
condition
A hypothetical bacterium swims among human intestinal contents until
it finds a suitable location on the intestinal lining. It adheres to the
intestinal lining using a feature that also protects it form phagocytes,
bacteriophages and dehydration. Fecal matter form a human in whose
intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. the bacterium is not susceptible to
the penicillin family of antibiotics. It contains no plasmids and relatively
little peptidoglycan. Adherence to the intestinal lining by this
bacterium is due to its possession of ____.
a. fimbriae
b. a capsule
c. pili
d. flagellum
e. tansulopsule -- Correct Answer ✔✔ b. a capsule
Chloramphenicol is an antibiotic that targets prokaryotic (70S)
ribosomes, but not eukaryotic (80S) ribosomes. Which of these
questions stems from this observation, plus an understanding of
eukaryotic origins?
a. if chloramphenicol inhibits prokaryotic ribosomes, should it not also
inhibit mitochondrial ribosomes?
b. can chloramphenicol also be used to control human diseases that
are caused by archaeans?
c. why aren't prokaryotic ribosomes identical to eukaryotic ribosomes?
d. can chloramphenicol pass through the capsules possessed by many
cyanobacteria?
e. why can't chloramphenicol be used to kill Plasmodium vivax as well
-- Correct Answer ✔✔ a. if chloramphenicol inhibits prokaryotic
ribosomes, should it not also inhibit mitochondrial ribosomes?
WITH 100% ACCURATE
ANSWERS.
If a human has a serious bacterial infection, which bacterial target or
targets could be useful targets when designing bacterial antibiotics?
a. 40S ribosomal subunits
b. gyrase
c. a peptidoglycan biosynthesis enzyme
d. B and C
e. A, B and C -- Correct Answer ✔✔ d. B and C (gyrase, a peptidoglycan
biosynthesis enzyme)
With regards to modern medicine, pathogenicity and pharmacology, it
is very important that one understand one fundamental concept. That
concept is that researchers will look for and attack enzymes, polymers,
chemicals that the pathogen ____ and that the host ____.
a. does not have; does not have
b. has; does not have
c. does not have; has
d. has; has
e. none of the above are true -- Correct Answer ✔✔ b. has; does not
have
Using the diagram below (malarial life cycle), one could surmise that
there are many medical indicators or prodromes (early symptoms) that
one may have contracted malaria. The medical sign(s) or condition(s)
readily apparent in THIS diagram is/are _______.
a. hemolytic anemia or medical condition
, b. acute hepatic disease, cellular intrusion or medical condition
c. dysentery or dysentery-like medical condition
d. legionnaires' disease
e. Both A and B -- Correct Answer ✔✔ a. hemolytic anemia or medical
condition
A hypothetical bacterium swims among human intestinal contents until
it finds a suitable location on the intestinal lining. It adheres to the
intestinal lining using a feature that also protects it form phagocytes,
bacteriophages and dehydration. Fecal matter form a human in whose
intestine this bacterium lives can spread the bacterium, even after
being mixed with water and boiled. the bacterium is not susceptible to
the penicillin family of antibiotics. It contains no plasmids and relatively
little peptidoglycan. Adherence to the intestinal lining by this
bacterium is due to its possession of ____.
a. fimbriae
b. a capsule
c. pili
d. flagellum
e. tansulopsule -- Correct Answer ✔✔ b. a capsule
Chloramphenicol is an antibiotic that targets prokaryotic (70S)
ribosomes, but not eukaryotic (80S) ribosomes. Which of these
questions stems from this observation, plus an understanding of
eukaryotic origins?
a. if chloramphenicol inhibits prokaryotic ribosomes, should it not also
inhibit mitochondrial ribosomes?
b. can chloramphenicol also be used to control human diseases that
are caused by archaeans?
c. why aren't prokaryotic ribosomes identical to eukaryotic ribosomes?
d. can chloramphenicol pass through the capsules possessed by many
cyanobacteria?
e. why can't chloramphenicol be used to kill Plasmodium vivax as well
-- Correct Answer ✔✔ a. if chloramphenicol inhibits prokaryotic
ribosomes, should it not also inhibit mitochondrial ribosomes?
