STRAIGHTERLINE MICROBIOLOGY
COMPREHENSIVE STUDY GUIDE 2026
FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ Nitrogen Fixation.
Answer: In the nitrogen cycle, which of the following steps involves
removal of nitrogen from the atmosphere by bacteria?
◍ 10-8 M.
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?
◍ Offspring from two parents may have variations in form and function that
contribute to survival of the species..
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?
◍ the virus has spread and left behind the remains of dead cells..
Answer: In a laboratory bacterial cell culture that has been infected by a
virus, plaques are areas in which...
◍ Photons.
Answer: The sun's energy is delivered as discrete packets that travel as
waves and are called
◍ The process includes glycolysis, the Krebs cycle, and the electron transport
chain..
Answer: What is a characteristic of aerobic respiration?
,◍ "Terminate here.".
Answer: In completing protein synthesis in a prokaryote, what basic
message is carried by a specialized codon that has no corresponding tRNA?
◍ new enzymes that inactivate the drug are synthesized.
Answer: 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?
◍ They have a high risk for infection due to frequent contact..
Answer: Why do the hands, feet, and breasts have more lymphatic vessels
for host defense than other areas of the human body?
◍ cell wall synthesis..
Answer: Penicillin functions as an antimicrobial agent by inhibiting
bacterial...
◍ Protozoa.
Answer: Which class of eukaryotic microorganisms can be subdivided into
groups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
◍ transposons.
Answer: Genetic material can be excised from one chromosome and directly
integrated into another via...
◍ TH cell.
Answer: What immune cell secretes numerous cytokines that help to
coordinate the response of other immune cells?
◍ DNA polymerase.
Answer: What enzymes are used to amplify DNA during PCR?
◍ Streptococcus pyogenes.
Answer: Which of the following is a scientific name?
◍ differential and selective.
Answer: Eosin-methylene blue agar, or EMB, is a commonly used
bacteriological medium for growing gram-negative bacteria from complex
, environments. It contains two dyes, eosin and methylene blue, as well as the
sugar lactose. Eosin is a pH indicator that changes color when the medium is
acidic, while methylene blue inhibits the growth of most gram-positive
bacteria. If an organism consumes lactose, acid will be produced, causing
the bacterial colonies to change color.Based upon this description, this
medium is ______
◍ branching off the Domain Eukarya..
Answer: A diagram of the three domains (Bacteria, Archaea, Eukarya)
proceeding from the Last Universal Common Ancestor would show Archaea
◍ solute.
Answer: In the cell cytoplasm, molecules of ATP are a
◍ nosepiece.
Answer: The _____ of the microscope holds and allows selection of the
objective lenses.
◍ the presence of cellular fluid, the possession of genetic information, and a
membrane serving as a cell boundary..
Answer: Characteristics shared by all cells include
◍ matter.
Answer: Anything that occupies space and mass is called...
◍ Morphology; nucleic acid sequences.
Answer: Trees of life illustrate the phylogenetic relationships of all
organisms were traditionally based on _____; newer methods for
determining phylogeny rely on _____.
◍ result from sharing electrons.
Answer: Covalent bonds
◍ phosphate, pentose sugar, nitrogen base.
Answer: One nucleotide contains one
◍ viruses.
Answer: Among the types of microorganisms, the ___. are noncellullar
COMPREHENSIVE STUDY GUIDE 2026
FULL QUESTIONS AND SOLUTIONS
GRADED A+
◍ Nitrogen Fixation.
Answer: In the nitrogen cycle, which of the following steps involves
removal of nitrogen from the atmosphere by bacteria?
◍ 10-8 M.
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?
◍ Offspring from two parents may have variations in form and function that
contribute to survival of the species..
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?
◍ the virus has spread and left behind the remains of dead cells..
Answer: In a laboratory bacterial cell culture that has been infected by a
virus, plaques are areas in which...
◍ Photons.
Answer: The sun's energy is delivered as discrete packets that travel as
waves and are called
◍ The process includes glycolysis, the Krebs cycle, and the electron transport
chain..
Answer: What is a characteristic of aerobic respiration?
,◍ "Terminate here.".
Answer: In completing protein synthesis in a prokaryote, what basic
message is carried by a specialized codon that has no corresponding tRNA?
◍ new enzymes that inactivate the drug are synthesized.
Answer: 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?
◍ They have a high risk for infection due to frequent contact..
Answer: Why do the hands, feet, and breasts have more lymphatic vessels
for host defense than other areas of the human body?
◍ cell wall synthesis..
Answer: Penicillin functions as an antimicrobial agent by inhibiting
bacterial...
◍ Protozoa.
Answer: Which class of eukaryotic microorganisms can be subdivided into
groups such as Mastigophora, Sarcodina, Ciliophora, and Apicomplexa?
◍ transposons.
Answer: Genetic material can be excised from one chromosome and directly
integrated into another via...
◍ TH cell.
Answer: What immune cell secretes numerous cytokines that help to
coordinate the response of other immune cells?
◍ DNA polymerase.
Answer: What enzymes are used to amplify DNA during PCR?
◍ Streptococcus pyogenes.
Answer: Which of the following is a scientific name?
◍ differential and selective.
Answer: Eosin-methylene blue agar, or EMB, is a commonly used
bacteriological medium for growing gram-negative bacteria from complex
, environments. It contains two dyes, eosin and methylene blue, as well as the
sugar lactose. Eosin is a pH indicator that changes color when the medium is
acidic, while methylene blue inhibits the growth of most gram-positive
bacteria. If an organism consumes lactose, acid will be produced, causing
the bacterial colonies to change color.Based upon this description, this
medium is ______
◍ branching off the Domain Eukarya..
Answer: A diagram of the three domains (Bacteria, Archaea, Eukarya)
proceeding from the Last Universal Common Ancestor would show Archaea
◍ solute.
Answer: In the cell cytoplasm, molecules of ATP are a
◍ nosepiece.
Answer: The _____ of the microscope holds and allows selection of the
objective lenses.
◍ the presence of cellular fluid, the possession of genetic information, and a
membrane serving as a cell boundary..
Answer: Characteristics shared by all cells include
◍ matter.
Answer: Anything that occupies space and mass is called...
◍ Morphology; nucleic acid sequences.
Answer: Trees of life illustrate the phylogenetic relationships of all
organisms were traditionally based on _____; newer methods for
determining phylogeny rely on _____.
◍ result from sharing electrons.
Answer: Covalent bonds
◍ phosphate, pentose sugar, nitrogen base.
Answer: One nucleotide contains one
◍ viruses.
Answer: Among the types of microorganisms, the ___. are noncellullar
