C. Protozoa are a diverse group of organisms that often prove difficult to classify into a taxonomy. - correct answer Which class of eukaryotic microorganisms can be subdivided into groups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
A. Helminths
B. Algae
C. Protozoa
D. Fungi
...
Final Straighterline Microbiology
C. Protozoa are a diverse group of organisms that often prove difficult to classify into a taxonomy. -
correct answer Which class of eukaryotic microorganisms can be subdivided into groups such as
Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
A. Helminths
B. Algae
C. Protozoa
D. Fungi
D. Transposons contain DNA that codes for enzymes that remove it from one site in the genome and
integrate it into another. - correct answer Genetic material can be excised from one chromosome and
directly integrated into another via
A. conjugation.
B. transformation.
C. transduction.
D. transposons.
B. TH (or T Helper) cells mature in the thymus and become sensitized when it binds to an antigen/MHC
complex. Upon activation, it releases interleukins-2, -4, -5, and -6, and interferon gamma which help to
activate macrophages, B cells, and TC cells. - correct answer Which immune cell secretes numerous
cytokines that help to coordinate the response of other immune cells?
A. B cell
B. TH cell
C. TC cell
D. Platelets
B. DNA polymerase works during the extension stage of PCR by elongating a DNA primer with
nucleotides complementary to the template strand. - correct answer Which of the following enzymes are
used to amplify DNA during PCR?
A. restriction endonuclease
B. DNA polymerase
C. reverse transcriptase
D. DNA ligase
, Final Straighterline Microbiology
d. nitrogen fixation
In nitrogen fixation, nitrogen in removed from the atmosphere by nitrogen-fixing bacteria and converted
to ammonia. - correct answer In the nitrogen cycle, which of the following steps involves removal of
nitrogen from the atmosphere by bacteria?
Select one:
a. ammonification
b. denitrification
c. nitrification
d. nitrogen fixation
d. 10^-8 - correct answer If enough H+ ions are added to pure water to raise the H+ concentration of the
solution to ten times higher than the original concentration, what is the resulting OH- concentration of
the solution?
Select one:
a. 10^-4
b.10^-3
c.10^-5
d. 10^-8
c. Offspring from two parents may have variations in form and function that contribute to survival of the
species.
Sexually produced offspring have traits from both parents and may develop variations that give them an
advantage for survival. - correct answer Fungi are able to reproduce asexually by creating conidiospores
and sporangiospores. Which of the following is an accurate explanation for why it is advantageous that
they are also capable of sexual reproduction?
Select one:
a. Asexually produced offspring are more likely to compete for resources and will kill off the parental
fungi.
b. Fungi normally produce sexually but produce asexually in harsh conditions such as severe drought.
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