1 |rPr ar gr e
MICROBIOLOGY STRAIGHTERLINE PRACTICE EX r r r
AM| MOST RECENT AND COMPLETE VERSIONALL
r r r r r r r
QUESTIONS AND CORRECT ANSWERS GRADE A+| r r r r r r
BRAND NEW r
Protozoa are a diverse group of organisms that often prove difficult to classify intoa tax
r r r r r r r r r r r r r r r
onomy. - r
ANSWER: C. Which class of eukaryotic microorganisms can be subdivided into gro
r r r r r r r r r r r r
ups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
r r r r r r r
A. Helminths
B. Algae
C. Protozoa
D. Fungi
Transposons contain DNA that codes for enzymes that remove it from one site in the ge
r r r r r r r r r r r r r r r
nome and integrate it into another. -
r r r r r r
ANSWER: D. Genetic material can beexcised from one chromosome and directly int
r r r r r r r r r r r r r
egrated into another via r r r
A. conjugation.
B. transformation.
C. transduction.
D. transposons.
TH (or T Helper) cells mature in the thymus and become sensitized when it binds to an a
r r r r r r r r r r r r r r r r r
ntigen/MHC complex. Upon activation, it releases interleukins-2, -4, -5, and
r r r r r r r r r
-6, and interferon gamma which help to activate macrophages, B cells, and TC cells. -
r r r r r r r r r r r r r r
ANSWER: B. Which immune cell secretes numerous cytokines that helpto coordin
r r r r r r r r r r r r
ate the response of other immune cells?
r r r r r r
A. B cell r
B. TH cell r
,2 |rPr ar gr e
C. TC cell r
D. Platelets
Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivate
r r r r r r r r r r
d toxins can induce the synthesis of antitoxins in the blood of rabbits.These antitoxins
r r r r r r r r r r r r r r r
(antibodies) are the basis of... r r r r
a. humoral immunity r
b. cell-mediated immunity r
c. antibiotic immunity r
d. phagocyte-mediated immunity - ANSWER: a. humoral immunity r r r r r r
Who of the following first discovered that some blood leukocytes could engulfdis
r r r r r r r r r r r r
ease-causing bacteria? r
a. von Behring
r
b. Meister
c. Metchnikoff
d. Ivanowski - ANSWER: c. Metchnikoff r r r r
Who is credited with developing a vaccine against chicken cholera?
r r r r r r r r r
a. Koch
b. Pasteur
c. Jenner
d. Lister - ANSWER: b. Pasteur
r r r r
,3 |rPr ar gr e
The concept that living organisms arise from nonliving material is called...
r r r r r r r r r r
a. biogenesis
b. cell theory r
c. spontaneous generation r
d. germ theory - ANSWER: c. spontaneous generation
r r r r r r
Protists contain all of the following forms of life EXCEPT...
r r r r r r r r r
a. protozoa
b. fungi
c. slime molds r
d. algae - ANSWER: b. fungi
r r r r
Cells with a relatively simple cell morphology that do not have a true membrane-
r r r r r r r r r r r r r
delimited nucleus are called...
r r r r
a. prokaryotes
b. eukaryotes
c. urkaryotes
d. nokaryotes - ANSWER: a. prokaryotes r r r r
The ribosomal RNA studies that led to the division of prokaryotic organisms intothe Ba
r r r r r r r r r r r r r r
cteria and the Archaea were begun by...
r r r r r r
, 4 |rPr ar gr e
a. Pasteur
b. Woese
c. Needham
d. Watson - ANSWER: b. Woese r r r r
In a search for new antibiotics, a previously unknown organism has been recoveredfro
r r r r r r r r r r r r r
m the soil. It is nonmotile and is composed of long threadlike structures formed from nu
r r r r r r r r r r r r r r r
cleated cells. It is not- r r r r
photosynthetic and absorbs its nutrients. This organism will most likely be classified a
r r r r r r r r r r r r
mong the... r
a. bacteria
b. archaea
c. eukaryotes (fungi) r
d. eukaryotes (protozoa) r
e. eukaryotes (algae) - ANSWER: c. eukaryotes (fungi) r r r r r r
If immersion oil was replaced with water, what would happen?
r r r r r r r r r
a. The refractive index would increase, improving resolution
r r r r r r
b. The refractive index of water would be greater than air but less than oil,imp
r r r r r r r r r r r r r r
roving resolution less than oil.
r r r r
c. The refractive index of water would be less than that of air, decreasingreso
r r r r r r r r r r r r r
lution.
d. There would be no difference. -
r r r r r
ANSWER: b. The refractive index of waterwould be greater than air but less than
r r r r r r r r r r r r r r r r
oil, improving resolution less than oil.
r r r r r
Prior to staining, smears of microorganisms are heat-fixed in order to...
r r r r r r r r r r
MICROBIOLOGY STRAIGHTERLINE PRACTICE EX r r r
AM| MOST RECENT AND COMPLETE VERSIONALL
r r r r r r r
QUESTIONS AND CORRECT ANSWERS GRADE A+| r r r r r r
BRAND NEW r
Protozoa are a diverse group of organisms that often prove difficult to classify intoa tax
r r r r r r r r r r r r r r r
onomy. - r
ANSWER: C. Which class of eukaryotic microorganisms can be subdivided into gro
r r r r r r r r r r r r
ups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
r r r r r r r
A. Helminths
B. Algae
C. Protozoa
D. Fungi
Transposons contain DNA that codes for enzymes that remove it from one site in the ge
r r r r r r r r r r r r r r r
nome and integrate it into another. -
r r r r r r
ANSWER: D. Genetic material can beexcised from one chromosome and directly int
r r r r r r r r r r r r r
egrated into another via r r r
A. conjugation.
B. transformation.
C. transduction.
D. transposons.
TH (or T Helper) cells mature in the thymus and become sensitized when it binds to an a
r r r r r r r r r r r r r r r r r
ntigen/MHC complex. Upon activation, it releases interleukins-2, -4, -5, and
r r r r r r r r r
-6, and interferon gamma which help to activate macrophages, B cells, and TC cells. -
r r r r r r r r r r r r r r
ANSWER: B. Which immune cell secretes numerous cytokines that helpto coordin
r r r r r r r r r r r r
ate the response of other immune cells?
r r r r r r
A. B cell r
B. TH cell r
,2 |rPr ar gr e
C. TC cell r
D. Platelets
Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivate
r r r r r r r r r r
d toxins can induce the synthesis of antitoxins in the blood of rabbits.These antitoxins
r r r r r r r r r r r r r r r
(antibodies) are the basis of... r r r r
a. humoral immunity r
b. cell-mediated immunity r
c. antibiotic immunity r
d. phagocyte-mediated immunity - ANSWER: a. humoral immunity r r r r r r
Who of the following first discovered that some blood leukocytes could engulfdis
r r r r r r r r r r r r
ease-causing bacteria? r
a. von Behring
r
b. Meister
c. Metchnikoff
d. Ivanowski - ANSWER: c. Metchnikoff r r r r
Who is credited with developing a vaccine against chicken cholera?
r r r r r r r r r
a. Koch
b. Pasteur
c. Jenner
d. Lister - ANSWER: b. Pasteur
r r r r
,3 |rPr ar gr e
The concept that living organisms arise from nonliving material is called...
r r r r r r r r r r
a. biogenesis
b. cell theory r
c. spontaneous generation r
d. germ theory - ANSWER: c. spontaneous generation
r r r r r r
Protists contain all of the following forms of life EXCEPT...
r r r r r r r r r
a. protozoa
b. fungi
c. slime molds r
d. algae - ANSWER: b. fungi
r r r r
Cells with a relatively simple cell morphology that do not have a true membrane-
r r r r r r r r r r r r r
delimited nucleus are called...
r r r r
a. prokaryotes
b. eukaryotes
c. urkaryotes
d. nokaryotes - ANSWER: a. prokaryotes r r r r
The ribosomal RNA studies that led to the division of prokaryotic organisms intothe Ba
r r r r r r r r r r r r r r
cteria and the Archaea were begun by...
r r r r r r
, 4 |rPr ar gr e
a. Pasteur
b. Woese
c. Needham
d. Watson - ANSWER: b. Woese r r r r
In a search for new antibiotics, a previously unknown organism has been recoveredfro
r r r r r r r r r r r r r
m the soil. It is nonmotile and is composed of long threadlike structures formed from nu
r r r r r r r r r r r r r r r
cleated cells. It is not- r r r r
photosynthetic and absorbs its nutrients. This organism will most likely be classified a
r r r r r r r r r r r r
mong the... r
a. bacteria
b. archaea
c. eukaryotes (fungi) r
d. eukaryotes (protozoa) r
e. eukaryotes (algae) - ANSWER: c. eukaryotes (fungi) r r r r r r
If immersion oil was replaced with water, what would happen?
r r r r r r r r r
a. The refractive index would increase, improving resolution
r r r r r r
b. The refractive index of water would be greater than air but less than oil,imp
r r r r r r r r r r r r r r
roving resolution less than oil.
r r r r
c. The refractive index of water would be less than that of air, decreasingreso
r r r r r r r r r r r r r
lution.
d. There would be no difference. -
r r r r r
ANSWER: b. The refractive index of waterwould be greater than air but less than
r r r r r r r r r r r r r r r r
oil, improving resolution less than oil.
r r r r r
Prior to staining, smears of microorganisms are heat-fixed in order to...
r r r r r r r r r r
