Chamberlain College of Nursing : BIOS 242 Microbiology Week 4 Midterm Exam / BIOS242 Microbiology Week 4 Midterm Exam
BIOS 242 Microbiology Week 4
... [Show More] Midterm Exam / BIOS242 Microbiology Week 4 Midterm Exam : Chamberlain College of Nursing
BIOS 242 Week 4 Midterm Exam / BIOS242 Week 4 Midterm Exam : Microbiology: Chamberlain College of Nursing
Question1. Question : Antoni van Leeuwenhoek was the first person in history to
Student Answer: use a magnifying glass.
develop a taxonomic system.
view protozoa and bacteria.
disprove spontaneous generation.
prove the germ theory.
Question 2. Question : Microbes that can live in the presence or absence of oxygen are called
Student Answer: anaerobes.
facultative anaerobes.
obligate parasites.
archaea.
prokaryotes.
Question 3. Question : Which of the following scientists provided evidence in favor of the concept of spontaneous generation?
Student Answer: Pasteur
Needham
Redi
Buchner
Spallanzani
Question 4. Question : The microbial production of alcohol from sugar is known as
Student Answer: fermentation.
pasteurization.
metabolism.
abiogenesis.
antisepsis.
Question 5. Question : Which of the following statements concerning Koch's postulates is false?
Student Answer: Koch's postulates cannot be used to demonstrate the cause of all diseases.
A suspected pathogen must be able to be grown in the laboratory.
All of Koch's postulates must be satisfied before an organism can be proven to cause a particular disease.
Koch's postulates involve the experimental infection of susceptible hosts.
A suspected pathogen must be found in the majority of individuals with a particular disease.
Question 6. Question : The study of the body's defenses against pathogens is called
Student Answer: etiology.
immunology.
chemotherapy.
molecular biology.
epidemiology.
Question 7. Question : Which of the following is NOT a characteristic of viruses?
Student Answer: they are visible with a light microscope.
they are acellular.
they are composed of genetic material and protein.
they are smaller than prokaryotic cells.
they are obligatory parasites.
Question 8. Question : Saccharomyces cerevisiae is an example of which of the following types of microbes?
Student Answer: fungus
protozoan
prokaryote
alga
virus
Question 9. Question : Proteins that promote chemical reactions in the cell are called
Student Answer: spores.
enzymes.
genes.
protozoa.
flagella.
Question 10. Question : Which of the following scientists was the first to develop a taxonomic system for classifying organisms?
Student Answer: Linnaeus
Needham
Leeuwenhoek
Lister
Pasteur
Question 11. Question : Robert Koch was involved in research on all of the following topics EXCEPT
Student Answer: the cause of anthrax.
the cause of fermentation.
development of a method to prove the cause of an infectious disease.
the cause of tuberculosis.
techniques for isolating microbes in the laboratory.
Question 12. Question : Microorganisms characterized by the absence of a nucleus are called
Student Answer: fungi.
pathogens.
eukaryotes.
prokaryotes.
viruses.
Question 13. Question : The term __________ literally means "produces disease."
Student Answer: prokaryote
pathogen
nosocomial
facultative anaerobe
animalcule
Question 14. Question : The study of the causation of disease is known as
Student Answer: epidemiology.
immunology.
biotechnology.
etiology.
chemotherapy.
Question 15. Question : The study of the occurrence, distribution, and spread of disease is known as
Student Answer: biotechnology.
epidemiology.
molecular biology.
serology.
biochemistry.
Question 16. Question : Short, hairlike structures used only by eukaryotic cells for movement are called
Student Answer: pili.
flagella.
fimbriae.
pseudopodia.
cilia.
Question 17. Question : Which of the following is NOT a component of bacterial cell walls?
Student Answer: peptidoglycan
lipoteichoic acids
mycolic acid
tetrapeptide
tubulin
Question 18. Question : Endospores survive a variety of harsh conditions in part because of the presence of
Student Answer: mycolic acid.
lipopolysaccharide.
hopanoids.
dipicolinic acid.
glycoproteins.
Question 19. Question : When cells are placed in a hypertonic solution, they lose water and shrivel. This process is called
Student Answer: crenation.
endocytosis.
passive transport.
periplasm.
plasmalemma.
Question 20. Question : All of the following are common to both the Gram stain and the acid-fast stain EXCEPT
Student Answer: primary stain.
counterstain.
a decolorizing agent.
a mordant.
a decolorizing agent and a counterstain.
Question 21. Question : A patient suffering from tuberculosis could be diagnosed by use of the __________ stain.
Student Answer: Gram
endospore
acid-fast
flagellar
capsule
Question 22. Question : Carbolfuchsin is the __________ in the acid-fast stain.
Student Answer: primary stain
mordant
decolorizer
counterstain
fixing reagent
Question 23. Question : The kingdoms included in the Linnaeus system are
Student Answer: Animalia and Prokaryotae.
Protista and Plantae.
Fungi and Protista.
Animalia and Plantae.
Prokaryotae and Protista.
Question 24. Question : The rules of naming organisms are called
Student Answer: taxonomy.
nomenclature.
classification.
binomials.
identification.
Question 25. Question : In the Gram stain procedure, iodine serves as a
Student Answer: counterstain.
decolorizing agent.
mordant.
primary stain.
fixative.
Question 26. Question : Crystal violet is the __________ in the Gram stain.
Student Answer: counterstain
decolorizing agent
mordant
neutralizing agent
primary stain
Question 27. Question : The __________ makes use of malachite green.
Student Answer: negative stain
flagellar stain
endospore stain
electron microscopy stain
acid-fast stain
Question 28. Question : The molecule that an enzyme acts upon is known as its
Student Answer: substrate.
coenzyme.
apoenzyme.
holoenzyme.
catalyst.
Question 29. Question : Pyruvic acid is a product of
Student Answer: the Krebs cycle.
fermentation.
glycolysis.
the Entner-Doudoroff pathway.
both glycolysis and the Entner-Doudoroff pathway.
Question 30. Question : In microbiology, the term growth usually refers to an increase in
Student Answer: a microbe's size.
the number of microbial cells.
the amount of ATP produced.
the number and size of microbial cells.
the number and size of microbial cells and the amount of ATP produced.
Question 31. Question : Human pathogens are classified as
Student Answer: thermoduric.
thermophiles.
mesophiles.
hyperthermophiles.
psychrophiles.
Question 32. Question : Organisms that can grow with or without oxygen present are
Student Answer: obligate aerobes.
facultative anaerobes.
aerotolerant anaerobes.
obligate anaerobes.
either facultative anaerobes or aerotolerant anaerobes.
Question 33. Question : Another term for the logarithmic growth of bacterial cells is
Student Answer: generation time.
exponential growth.
arithmetic growth.
absorbance.
binary fission.
Question 34. Question : During the __________ of growth, cells are dying faster than new cells are being produced.
Student Answer: death phase
lag phase
log phase
stationary phase
longitudinal phase
Question 35. Question : Metabolic activity is at maximum level in the __________ of growth.
Student Answer: lag phase
log phase
death phase
stationary phase
intermediate phase
Question 36. Question : Cells are rapidly growing and dividing during the __________ of growth.
Student Answer: death phase
lag phase
log phase
stationary phase
indeterminate phase
Question 37. Question : Microaerophiles are microbes that grow best at low
Student Answer: carbon dioxide levels.
pH values.
hydrostatic pressure.
oxygen levels.
salt concentrations.
Question 38. Question : An acidophile thrives under conditions of low
Student Answer: carbon dioxide levels.
salt concentrations.
oxygen levels.
hydrostatic pressure.
pH.
Question 39. Question : The bacterial chromosome is
Student Answer: usually circular.
found in a nucleoid.
found in a nucleus.
both circular and found in a nucleoid.
both circular and found in a nucleus.
Question 40. Question : Which of the following is an example of sanitization?
Student Answer: A public toilet is treated with disinfectants.
A surgeon washes her hands before surgery.
Heat is used to kill potential pathogens in apple juice.
An autoclave is used to prepare nutrient agar.
A nurse prepares an injection site with an alcohol swab.
Question 41. Question : Aseptic means
Student Answer: sterile.
free of all microbes.
clean.
sanitized.
free of pathogens.
Question 42. Question : Which of the following is a sterilizing agent?
Student Answer: ozone
hydrogen peroxide
peracetic acid
dish soap
ozone and hydrogen peroxide
Question 43. Question : The process of filtration is a(n)
Student Answer: disinfectant method.
sterilizing method.
sanitization method.
antiseptic procedure.
ineffective method for removing microbes.
Question 44. Question : Which of the following is NOT a characteristic of a genus name?
Student Answer: it is usually an adjective.
it is written before the specific epithet.
it is always capitalized.
it is either underlined or in italics.
it is one of two names used to identify an organism.
Question 45. Question : Acidic dyes
Student Answer: work best in low pH environments.
are negatively charged.
are used for staining negatively charged molecular structures.
are lipid soluble.
are negatively charged and work best at low pH.
Question 46. Question : All of the following are associated with smear preparation EXCEPT
Student Answer: agglutination of the specimen.
spreading the specimen onto a slide.
fixation using heat.
killing the microbes in the specimen.
fixation using methanol or formalin.
Question 47. Question : The Gram stain works because of differences in the __________ of bacteria.
Student Answer: genetic characteristics
cell walls
cell membranes
antigens
capsules
Question 48. Question : The metabolic processes called fermentation
Student Answer: produce substrates for the Krebs cycle.
are alternatives for the pentose phosphate pathway.
use an organic molecule as a final electron acceptor.
occur only when oxygen is readily available.
produce substrates for glycolysis.
Question 49. Question : Which of the following is an incorrect pairing?
Student Answer: protozoa: multicellular
fungi: cell walls
algae: aquatic and marine habitats
prokaryotes: no nuclei
viruses: acellular parasites
Question 50. Question : Who discovered penicillin?
Student Answer: Fleming
Ehrlich
Kitasato
Pasteur
Domagk [Show Less]