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STRAIGHTERLINE MICROBIOLOGY FINAL EXAM 2024/2025 | CURRENTLY TESTING EXAM VERSIONS WITH ACCURATE QUESTIONS AND DETAILED ANSWERS WITH RATIONALES AND STUDY GUIDE | EXPERT VERIFIED FOR GUARANTEED PASS | LATEST UPDATE$22.99
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STRAIGHTERLINE MICROBIOLOGY FINAL EXAM 2024/2025 | CURRENTLY TESTING EXAM VERSIONS WITH ACCURATE QUESTIONS AND DETAILED ANSWERS WITH RATIONALES AND STUDY GUIDE | EXPERT VERIFIED FOR GUARANTEED PASS | LATEST UPDATE
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Course
STRAIGHTERLINE MICROBIOLOGY
Institution
STRAIGHTERLINE MICROBIOLOGY
STRAIGHTERLINE MICROBIOLOGY FINAL EXAM 2024/2025
| CURRENTLY TESTING EXAM VERSIONS WITH ACCURATE
QUESTIONS AND DETAILED ANSWERS WITH RATIONALES
AND STUDY GUIDE | EXPERT VERIFIED FOR GUARANTEED
PASS | LATEST UPDATE
STRAIGHTERLINE MICROBIOLOGY FINAL EXAM 2024/2025
| CURRENTLY TESTING EXAM VERSIONS WITH ACCURATE
QUESTIONS AND DETAILED ANSWERS WITH RATIONALES
AND STUDY GUIDE | EXPERT VERIFIED FOR GUARANTEED
PASS | LATEST UPDATE
In completing protein synthesis in a prokaryote, what basic message is carried by a specialized
codon that has no corresponding tRNA?
Select one:
a. "Fold peptide chain."
b. "Terminate here." The specialized codon signals the end of protein synthesis; there is not RNA
because it is only needed if the process is to continue.
c. "Add cofactor."
d. "Clip starting amino acid."
b. "Terminate here."
The specialized codon signals the end of protein synthesis; there is not RNA because it is only
needed if the process is to continue.
Microbial drug resistance can be caused by mutations or by introduction of new genes into a
population. Which of the following can only be caused by the introduction of new genes into a
population?
Select one:
a. a metabolic pathway in the bacterium is shut down
b. binding sites for the drug are reduced in number or affinity to the drug
c. new enzymes that inactivate the drug are synthesized This can only occur if new genes are
introduced into the population.
d. uptake of the drug into the bacterium is diminished
c. new enzymes that inactivate the drug are synthesized
This can only occur if new genes are introduced into the population.
Why do the hands, feet, and breasts have more lymphatic vessels for host defense than other
areas of the human body?
Select one:
a. They have a high risk for infection due to frequent contact. The hands and feet and breasts are
the most likely sites on the body for contact with infectious agents.
b. They have a greater density of nerves.
c. They require complex movement of fluids from the extremities.
d. They are located a long distance from the thalamus.
a. They have a high risk for infection due to frequent contact. The hands and feet and breasts are
the most likely sites on the body for contact with infectious agents.
,Penicillin functions as an antimicrobial agent by inhibiting bacterial
Select one:
a. cell wall synthesis. Penicillin belongs to a class of antibacterial agents that interfere with the
production of the material that makes up the bacterial cell wall. The bacteria must constantly
replace this material or they will become susceptible to rupture due to osmotic pressure.
b. folic acid synthesis.
c. protein synthesis.
d. RNA and DNA function.
a. cell wall synthesis. Penicillin belongs to a class of antibacterial agents that interfere with the
production of the material that makes up the bacterial cell wall. The bacteria must constantly
replace this material or they will become susceptible to rupture due to osmotic pressure.
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
C. Protozoa are a diverse group of organisms that often prove difficult to classify into a
taxonomy.
Genetic material can be excised from one chromosome and directly integrated into another via
A. conjugation.
B. transformation.
C. transduction.
D. transposons.
D. Transposons contain DNA that codes for enzymes that remove it from one site in the genome
and integrate it into another.
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. 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.
Which of the following enzymes are used to amplify DNA during PCR?
A. restriction endonuclease
,B. DNA polymerase
C. reverse transcriptase
D. DNA ligase
B. DNA polymerase works during the extension stage of PCR by elongating a DNA primer with
nucleotides complementary to the template strand.
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. nitrogen fixation
In nitrogen fixation, nitrogen in removed from the atmosphere by nitrogen-fixing bacteria and
converted to ammonia.
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
d. 10^-8
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.
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.
d. Sexual reproduction produces more offspring at a faster rate than spore formation.
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.
In a laboratory bacterial cell culture that has been infected by a virus, plaques are areas in which
Select one:
a. bacterial cells are resistant to the virus and have not been infected.
b. there is no nutrient available for the bacteria to grow.
c. the virus has spread and left behind the remains of dead cells. Plaques are areas in which the
bacteria have been destroyed by the virus and all that remain are dead cells.
d. the virus has not yet spread to that area of cells.
c. the virus has spread and left behind the remains of dead cells.
Plaques are areas in which the bacteria have been destroyed by the virus and all that remain are
dead cells.
The sun's energy is delivered as discrete packets that travel as waves and are called
Select one:
a. ATP.
b. carotenoids.
c. NADP.
d. photons. The sun's energy travels in the form of packets of energy called photons.
d. photons.
The sun's energy travels in the form of packets of energy called photons.
Which of the following is a characteristic of aerobic respiration?
Select one:
a. Oxygen-containing ions act as the final electron acceptors in electron transport.
b. The process includes glycolysis, the Krebs cycle, and the electron transport chain. The three
stages of aerobic respiration are glycolysis, the Krebs cycle, and the electron transport chain.
c. Aerobic respiration produces a total of 2 ATP molecules.
d. Aerobic respiration produces lactic acid.
b. The process includes glycolysis, the Krebs cycle, and the electron transport chain. The three
stages of aerobic respiration are glycolysis, the Krebs cycle, and the electron transport chain.
Which of the following bacteria is not closely related to the others?
a. Salmonella bongori
b. Salmonella enterica subsp. arizonae
c. Salmonella enterica subsp. indica
d. Salmonella enterica subsp. enterica
Salmonella bongori
All of the following are monosaccharides except ______.
a. glucose
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