Environmental Microbiology
Final Exam Questions
Course Introduction
Environmental Microbiology explores the roles and interactions of microorganisms within natural and engineered environments. The course covers microbial diversity, physiology, and ecology, focusing on how bacteria, viruses, fungi, and other microbes influence soil, water, air, and extreme habitats. Students will examine the impact of microorganisms on biogeochemical cycles, environmental pollution, biotechnology applications, and public health. Through case studies and laboratory approaches, the course also introduces methods for detecting and monitoring microbial activity in various environments.
Recommended Textbook Microbiology A Systems Approach 5th Edition by Marjorie Kelly Cowan
Available Study Resources on Quizplus
25 Chapters
2233 Verified Questions
2233 Flashcards
Source URL: https://quizplus.com/study-set/2513
Page 2
Chapter 1: The Main Themes of Microbiology
Available Study Resources on Quizplus for this Chatper
61 Verified Questions
61 Flashcards
Source URL: https://quizplus.com/quiz/49972
Sample Questions
Q1) The scientific method involves formulating a tentative explanation, called the hypothesis, to account for what has been observed or measured.
A)True
B)False
Answer: True
Q2) A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding from the Last Universal Common Ancestor would show Archaea
A)branching off the Domain Bacteria.
B)branching off the Domain Eukarya.
C)as the original cells from which the others derived.
Answer: B
Q3) Koch's postulates are criteria used to establish that
A)microbes are found on dust particles.
B)a specific microbe should be classified in a specific kingdom.
C)microbes can be used to clean up toxic spills.
D)a specific microbe is the cause of a specific disease.
E)life forms can only arise from preexisting life forms.
Answer: D
To view all questions and flashcards with answers, click on the resource link above.
Chapter 2: The Chemistry of Biology
Available Study Resources on Quizplus for this Chatper
77 Verified Questions
77 Flashcards
Source URL: https://quizplus.com/quiz/49971
Sample Questions
Q1) Compared to a solution of pH 9, a solution of pH 7
A)is more basic.
B)has more H<sup>+</sup> ions.
C)has a higher pH.
D)has no OH<sup>-</sup> ions.
Answer: B
Q2) Compared to a solution of pH 9, a solution of pH 7 is
A)20 times more basic.
B)2 times more acidic.
C)100 times more acidic.
D)100 times more basic.
E)20 times more acidic.
Answer: C
Q3) The electrons of an atom are
A)used to determine the atomic weight.
B)always equal to the number of protons.
C)carrying a positive charge.
D)always in full orbitals.
E)used to determine the atomic number.
Answer: B
To view all questions and flashcards with answers, click on the resource link above. Page 4
Chapter 3: Tools of the Laboratory: Methods for the
Culturing of Microscopic Analysis of Microorganisms
Available Study Resources on Quizplus for this Chatper
74 Verified Questions
74 Flashcards
Source URL: https://quizplus.com/quiz/49970
Sample Questions
Q1) Fixed smears of specimens are required to perform the Gram stain or the endospore stain.
A)True
B)False
Answer: True
Q2) Which of the following is essential for the development of discrete, isolated colonies?
A)Solid medium
B)Differential medium
C)Broth medium
D)Assay medium
E)Selective medium
Answer: A
Q3) The wavelength of light used and the numerical aperture governs ______.
A)resolution
B)contrast
C)illumination
D)size of the field
E)magnification
Answer: A
Page 5
To view all questions and flashcards with answers, click on the resource link above.
Chapter 4: Bacteria and Archaea
Available Study Resources on Quizplus for this Chatper
94 Verified Questions
94 Flashcards
Source URL: https://quizplus.com/quiz/49969
Sample Questions
Q1) The cell envelope of gram-positive bacteria has two layers: a thick cell wall and the cell membrane.
A)True
B)False
Q2) Lipopolysaccharide is an important cell envelope component of ______.
A)acid-fast bacteria
B)gram-positive bacteria
C)gram-negative bacteria
D)mycoplasmas
E)protoplasts
Q3) Some bacteria have a cytoskeleton of sterols to help maintain their shape.
A)True
B)False
Q4) The reference for bacterial descriptions and classifications is _____ Manual of Systematic Bacteriology.
A)Leeuwenhoek's
B)Lister's
C)Koch's
D)Bergey's
E)Pasteur's
Page 6
To view all questions and flashcards with answers, click on the resource link above.
Chapter 5: Eukaryotic Cells and Microorganisms
Available Study Resources on Quizplus for this Chatper
91 Verified Questions
91 Flashcards
Source URL: https://quizplus.com/quiz/49968
Sample Questions
Q1) Fungal asexual spores
A)produce offspring with different combinations of genes from the parent.
B)cannot be seen using a light microscope.
C)are produced when nutrients are limiting.
D)are the products of meiotic division by a single parent cell.
E)are used to identify fungi.
Q2) Amoebic dysentery is most commonly contracted through
A)contaminated blood products.
B)insect bites.
C)puncture wounds.
D)the fecal-oral route from contaminated food or water.
E)direct transmission from one host to another.
Q3) The endosymbiotic theory says that precursor eukaryotic cells acquired cilia by endosymbiosis with a(n) _____ ancestor and others gained photosynthetic ability from endosymbiosis with a(n) _____ ancestor.
A)archaeal, cyanobacterial
B)protozoan, algal
C)spiral, cyanobacterial
D)helminth, algal
To view all questions and flashcards with answers, click on the resource link above.
Page 7
Chapter 6: An Introduction to the Viruses
Available Study Resources on Quizplus for this Chatper
96 Verified Questions
96 Flashcards
Source URL: https://quizplus.com/quiz/49967
Sample Questions
Q1) The correct sequence of events in viral multiplication is
A)penetration, uncoating, synthesis, adsorption, assembly, and release.
B)uncoating, penetration, synthesis, assembly, absorption, and release.
C)adsorption, penetration, uncoating, synthesis, assembly, and release.
D)assembly, synthesis, uncoating, release, penetration, and adsorption.
E)adsorption, release, synthesis, uncoating, assembly, and penetration.
Q2) Viral classification has changed over the years and while they are given genus names, the use of species names has not been widely accepted.This is because
A)viruses are not organisms.
B)viruses change over time making species characteristics difficult to stabilize.
C)viruses that could be classified into a single species may have many, but not all, properties in common.
D)All of the above are arguments against using species designations for viruses.
Q3) Lysogeny refers to
A)altering the host range of a virus.
B)the latent state of herpes infections.
C)virions exiting host cell.
D)the viral genome inserting into bacterial host chromosome.
To view all questions and flashcards with answers, click on the resource link above. Page 8
Chapter 7: Microbial Nutrition, Ecology, and Growth
Available Study Resources on Quizplus for this Chatper
96 Verified Questions
96 Flashcards
Source URL: https://quizplus.com/quiz/49966
Sample Questions
Q1) Organisms that feed on dead organisms for nutrients are called ______.
A)lithoautotrophs
B)parasites
C)autotrophs
D)saprobes
E)phototrophs
Q2) Facilitated diffusion is limited by
A)osmotic pressure.
B)the size of the pores in the membrane.
C)the size of the cell.
D)the substrate concentration.
E)carrier proteins in the membrane.
Q3) Obligate saprobes can adapt to a living host.
A)True
B)False
Q4) The production of antibiotics is a form of antagonism called ______.
A)symbiosis
B)synergism
C)antibiosis
D)mutualism
Page 9
To view all questions and flashcards with answers, click on the resource link above.
Chapter 8: Microbial Metabolism: The Chemical Crossroads of Life
Available Study Resources on Quizplus for this Chatper
99 Verified Questions
99 Flashcards
Source URL: https://quizplus.com/quiz/49965
Sample Questions
Q1) A bacterium that you isolated from pond water appears to use light for energy.Based upon this information, you inoculate the organism into fresh media, infused with lots of carbon dioxide.Even after incubation at the correct temperature (of pond water), the organism is not growing.Your best explanation of what might have happened is A)there was no sulfur compound added to the medium, that could be used as an electron donor.
B)no oxygen was added to the medium so the organism died.
C)there is some inhibitory chemical that is preventing the growth of the bacterium. D)you were using the wrong type of sunlight as the energy source for the bacterium.
Q2) An oxidase detection test can be used to identify certain bacteria because they are missing or lack expression of ______.
A)cytochrome C oxidase
B)NAD
C)mitochondria
D)ATP synthase
E)coenzyme Q
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Microbial Genetics
Available Study Resources on Quizplus for this Chatper
104 Verified Questions
104 Flashcards
Source URL: https://quizplus.com/quiz/49964
Sample Questions
Q1) A mutation that changes a normal codon to a stop codon is called a ______ mutation.
A)point
B)silent
C)back
D)missense
E)nonsense
Q2) The jumping of a gene from one location to another is done by ________.
A)conjugation
B)transposons
C)transformation
D)transduction
E)transmission
Q3) The enzyme that can proofread replicating DNA, detect incorrect bases, excise them, and correctly replace them is _______.
A)DNA ligase
B)DNA polymerase
C)DNA helicase
D)DNA gyrase
E)primase
To view all questions and flashcards with answers, click on the resource link above. Page 11
Chapter 10: Genetic Engineering and Recombinant Dna
Available Study Resources on Quizplus for this Chatper
82 Verified Questions
82 Flashcards
Source URL: https://quizplus.com/quiz/49963
Sample Questions
Q1) Recombinant strains of _____ are released to colonize plant roots to produce an insecticide to destroy invading insects.
A)Pseudomonas syringae
B)Saccharomyces cerevisiae
C)Pseudomonas fluorescens
D)Escherichia coli
E)Thermus aquaticus
Q2) The commercial product Frostban consists of a genetically altered bacterium which prevents ice crystals from forming on plants, thereby reducing freezing of plants and financial distress to the farmers as a result of freezing weather.This product contains a strain of ______.
A)Escherichia coli
B)Saccharomyces cerevisiae
C)Thermus aquaticus
D)Pseudomonas fluorescens
E)Pseudomonas syringae
Q3) When DNA is heated, the two strands will separate.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 12
Chapter 11: Physical and Chemical Control of Microbes
Available Study Resources on Quizplus for this Chatper
104 Verified Questions
104 Flashcards
Source URL: https://quizplus.com/quiz/49962
Sample Questions
Q1) Which is mismatched?
A)Iodophor - iodine
B)Sodium hypochlorite - chlorine
C)Merthiolate - silver
D)Benzalkonium chloride - quaternary ammonium compound
E)Formalin - formaldehyde
Q2) Which of the following is not true of chloramines?
A)They contain chlorine.
B)They are used to treat wounds and skin surfaces.
C)They are safer than free chlorine.
D)They can sanitize and disinfect.
E)They form trihalomethanes with organic compounds.
Q3) Disinfection of beverages such as apple juice, milk, and wine is optimally achieved by ______.
A)filtration
B)chlorination
C)pasteurization
D)boiling water
E)moist heat autoclave
To view all questions and flashcards with answers, click on the resource link above.
Page 13
Chapter 12: Antimicrobial Treatment
Available Study Resources on Quizplus for this Chatper
109 Verified Questions
109 Flashcards
Source URL: https://quizplus.com/quiz/49961
Sample Questions
Q1) Aminoglycosides
A)destroy peptidoglycan.
B)are metabolic analogs of PABA and block folic acid synthesis.
C)attach to the 30S ribosomal subunit and disrupt protein synthesis.
D)damage cell membranes.
E)block peptidases that cross-link glycan molecules.
Q2) The first modern antimicrobial drugs were sulfa drugs.
A)True
B)False
Q3) Acyclovir is used to treat infections caused by ______.
A)influenza A virus
B)HIV
C)herpes simplex virus
D)respiratory syncytial virus
E)hepatitis C virus
Q4) The use of antibiotics in cattle feed leads to the development of antibiotic-resistant bacteria.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 14
Chapter 13: Microbe-Human Interactions: Health and Disease
Available Study Resources on Quizplus for this Chatper
104 Verified Questions
104 Flashcards
Source URL: https://quizplus.com/quiz/49960
Sample Questions
Q1) An animal, such as an arthropod, that transmits a pathogen from one host to another is a ______.
A)fomite
B)carrier
C)vector
D)reservoir
E)source
Q2) A laboratory technologist splashed a blood specimen onto his face, eyes, nose, and mouth.This specimen was from an HIV positive patient.If this blood exposure leads to HIV infection in the technologist, the transmission route is ______.
A)direct
B)fomite
C)vehicle
D)droplet nuclei
E)aerosol
Q3) An epigenetic change is one that occurs when a microbial cell produces a toxin or an exoenzyme that directly damages host cells.
A)True
B)False
Page 15
To view all questions and flashcards with answers, click on the resource link above.
Chapter 14: Host Defenses I: Overview and Nonspecific Defenses
Available Study Resources on Quizplus for this Chatper
91 Verified Questions
91 Flashcards
Source URL: https://quizplus.com/quiz/49959
Sample Questions
Q1) Each of the following are benefits of fever except
A)it increases the availability of iron.
B)it increases metabolism.
C)it stimulates hematopoiesis.
D)it increases phagocytosis.
E)it reduces the ability of temperature-sensitive organisms to multiply.
Q2) Endotoxin is an exogenous pyrogen.
A)True
B)False
Q3) Components of the first line of defense include all of the following, except
A)the tough cell sheet of the upper epidermis of the skin.
B)the flushing action of tears and blinking.
C)nasal hairs.
D)phagocytic white blood cells.
E)the flushing action of urine.
Q4) The main function of the mononuclear phagocyte system is to provide
A)surveillance cells.
B)a connection between tissues and organs.
C)filtration of extracellular fluid.
D)filtration of blood.
To view all questions and flashcards with answers, click on the resource link above. Page 16
Chapter 15: Host Defenses II: Specific Immunity and Immunization
Available Study Resources on Quizplus for this Chatper
93 Verified Questions
93 Flashcards
Source URL: https://quizplus.com/quiz/49958
Sample Questions
Q1) Which of the statements below represents the correct order of events in the adaptive immune response?
A)Lymphocyte challenge, antigen presentation, lymphocyte development, lymphocyte response
B)Antigen presentation, lymphocyte development, lymphocyte challenge, lymphocyte response
C)Antigen presentation, lymphocyte challenge, lymphocyte development, lymphocyte response
D)Lymphocyte development, antigen presentation, lymphocyte challenge, lymphocyte response
Q2) Which process involves antibodies coating microorganisms in order to facilitate phagocytosis?
A)Opsonization
B)Agglutination
C)Anamnestic response
D)Neutralization
E)Complement fixation
Q3) Clonal selection requires the presence of foreign antigens.
A)True
B)False
Page 17
To view all questions and flashcards with answers, click on the resource link above.
Chapter 16: Disorders in Immunity
Available Study Resources on Quizplus for this Chatper
83 Verified Questions
83 Flashcards
Source URL: https://quizplus.com/quiz/49957
Sample Questions
Q1) An effective test to determine whether an individual is allergic to a specific substance is to
A)test for the allergen in the blood.
B)test for levels of IgE specific for the allergen.
C)test for high levels of IgG in the serum.
D)inject high levels of the allergen so see if the patient goes into anaphylactic shock.
Q2) Once a mother has been sensitized to the Rh factor,
A)all other Rh+ fetuses are at risk.
B)she can be given RhoGAM in future pregnancies to prevent hemolytic disease of the newborn.
C)she can never again have a low risk pregnancy.
D)only future Rh- fetuses are at risk.
E)None of the choices are correct.
Q3) During graft rejection, cytotoxic T cells of the recipient recognize and respond to foreign class I MHC receptors on the grafted cells.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 18
Chapter 17: Diagnosing Infections
Available Study Resources on Quizplus for this Chatper
83 Verified Questions
83 Flashcards
Source URL: https://quizplus.com/quiz/49956
Sample Questions
Q1) In precipitation tests, the antigen
A)-antibody complex settles to the bottom of the tube.
B)is a whole cell.
C)is an insoluble molecule.
D)is a soluble molecule.
Q2) A direct immunofluorescence test involves a(n)
A)agglutination reaction.
B)lysis reaction.
C)known antibody binding to an unknown antigen.
D)precipitation reaction.
Q3) Biochemical tests include all of the following except A)gas production tests.
B)sugar fermentation tests.
C)antibiotic sensitivity tests.
D)ribotyping tests.
E)tests for the presence of specific enzymes.
Q4) An infectious organism isolated from a patient has a sequence on its genome TATTGAAGC.This will hybridize to the RNA probe UAUUGAAGC.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 19
Chapter 18: Infectious Diseases Affecting the Skin and Eyes
Available Study Resources on Quizplus for this Chatper
86 Verified Questions
86 Flashcards
Source URL: https://quizplus.com/quiz/49955
Sample Questions
Q1) The toxin of Staphylococcus aureus that causes blisters and desquamation of skin in staphylococcal scalded skin syndrome is ______.
A)enterotoxin
B)hemolysin
C)exfoliative toxin
D)erythrogenic toxin
E)toxic shock syndrome toxin
Q2) Which of the following skin defenses and its mechanism is mismatched?
A)Antimicrobial peptides; disrupt positively charged bacterial membranes
B)Sebum; lipid hydrolysis leads to toxic by-products that inhibit microbial growth
C)Lysozyme; hydrolyzes peptidoglycan in bacterial cell walls
D)Keratinized surface; protein that provides waterproofing
Q3) Current recommendations for the treatment of MRSA infections in the United States will change based on
A)patterns of antibiotic resistance.
B)the cost of different antibiotics.
C)the availability of different antibiotics.
D)congressional approval.
To view all questions and flashcards with answers, click on the resource link above.
Page 20
Chapter 19: Infectious Diseases Affecting the Nervous System
Available Study Resources on Quizplus for this Chatper
82 Verified Questions
82 Flashcards
Source URL: https://quizplus.com/quiz/49954
Sample Questions
Q1) Which of the following is not true of Streptococcus pneumoniae?
A)It is a small, gram-negative coccus.
B)It is the most frequent cause of community-acquired meningitis.
C)It has a polysaccharide capsule that resists phagocytosis.
D)It produces an alpha-hemolysin and hydrogen peroxide.
Q2) Which type of cell has phagocytic capabilities in the central nervous system?
A)Macrophages
B)Neurons
C)Astrocytes
D)Schwann cells
E)Microglial cells
Q3) Poliovirus initially multiplies in the ______.
A) lymphoid tissue
B) central nervous system
C) nasopharynx
D) intestine
E) basal ganglia
Q4) Viral meningitis normally requires aggressive antiviral treatment.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 21
Chapter 20: Infectious Diseases Affecting the
Cardiovascular and Lymphatic
Systems
Available Study Resources on Quizplus for this Chatper
85 Verified Questions
85 Flashcards
Source URL: https://quizplus.com/quiz/49953
Sample Questions
Q1) Which of the following statements regarding erhlichiosis is incorrect?
A)It often coinfects with Borrelia burgdorferi.
B)Treatment requires an extensive course of antibiotics, usually 3-6 weeks.
C)The disease vector is transmitted by Ixodes ticks.
D)Symptoms include fever, headache, and muscle pains.
E)The disease is diagnosed by PCR or indirect fluorescent antibody tests.
Q2) Which of the following are features that make Bacillus anthracis a potential bioterrorism weapon?
A)It is naturally occurring worldwide in soil, and intentional release may not be suspected.
B)It forms endospores that can be stored in powder form indefinitely.
C)Pulmonary anthrax is rapidly fatal.
D)Vaccination is not widespread in the United States.
E)All of these choices are correct.
Q3) Which of these diseases would most likely be identified by viewing a stained blood smear in a light microscope?
A)Chagas disease
B) Dengue fever
C) HIV
D)Ebola hemorrhagic fever
Page 22
To view all questions and flashcards with answers, click on the resource link above.
Chapter 21: Infectious Diseases Affecting the Respiratory System
Available Study Resources on Quizplus for this Chatper
95 Verified Questions
95 Flashcards
Source URL: https://quizplus.com/quiz/49952
Sample Questions
Q1) Secondary bacterial infections may occur with the common cold.
A)True
B)False
Q2) Pneumonias have different signs and symptoms depending on whether they are classified as CAP or HCAP.
A)True
B)False
Q3) Infection travels to the middle ear by way of the ______.
A)auditory canal
B)sinuses
C)nasal cavity
D)eustachian (auditory) tubes
E)subarachnoid space
Q4) Which of the following is a characteristic of Histoplasma capsulatum?
A) It grows in moist soil, rich in nitrogen from bird and bat droppings.
B) It is a protozoan.
C)It is a dermatophyte.
D)It grows in dry, arid soil.
Page 23
To view all questions and flashcards with answers, click on the resource link above.
Chapter 22: Infectious Diseases Affecting the
Gastrointestinal Tract
Available Study Resources on Quizplus for this Chatper
104 Verified Questions
104 Flashcards
Source URL: https://quizplus.com/quiz/49951
Sample Questions
Q1) Which of the following statements regarding schistosomiasis is incorrect?
A)There is only a single drug available to treat Schistosoma infection, praziquantel, and drug-resistant strains are beginning to arise.
B)Once a person has recovered from an infection with Schistosoma mansoni, they are protected with lifelong immunity.
C)Efficacy of treatment is assess by observing fecal samples placed in water for whether eggs can hatch to release live miracidia.
D)Schistosomiasis is transmitted by exposing the skin to a water source that has been contaminated with sewage.
Q2) Which of the following is not true of enterotoxigenic
A)It causes traveler's diarrhea.
B)It can be life-threatening in infants.
C)It causes a high fever.
D)Fluid replacement is vital to surviving an infection.
E)coli (ETEC)?
Q3) The only body fluid that can transmit Hepatitis B virus is blood.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 24
Chapter 23: Infectious Diseases Affecting the Genitourinary System
Available Study Resources on Quizplus for this Chatper
81 Verified Questions
81 Flashcards
Source URL: https://quizplus.com/quiz/49950
Sample Questions
Q1) In the final trimester of pregnancy, your test results came back positive for an infection that would likely be damaging for the newborn, so your doctor wants to prescribe an antibiotic.What organism is the likely culprit here?
A)Group B Streptococcus
B) Herpes simplex 2
C) Leptospira
D) Trichomonas
Q2) Chlamydia trachomatis is commonly transmitted by sexual activity.
A)True
B)False
Q3) The latency period of syphilis is ______.
A)3 to 6 months
B)1 year
C)10 years
D) 20 years or longer
Q4) Which of the following characteristics can distinguish vaginitis and vaginosis?
A)Causative agent
B)Presence of vaginal inflammation
C)Presence of discharge
D)All of the choices are correct.
To view all questions and flashcards with answers, click on the resource link above. Page 25
Chapter 24: Microbes and the Environment
Available Study Resources on Quizplus for this Chatper
76 Verified Questions
76 Flashcards
Source URL: https://quizplus.com/quiz/49949
Sample Questions
Q1) Which of the following is a source of methane?
A)Gastrointestinal tract of cattle and sheep
B)Photosynthesis from halophiles in the Dead Sea
C)Decomposition of organic detritus on the forest floor
D)Degradation of cellulose and lignin by fungi
E)All of these processes produce methane.
Q2) Phytoplankton is composed of protozoa and small invertebrates.
A)True
B)False
Q3) Metagenomic analysis involves DNA sequencing of various samples taken from a particular habitat.
A)True
B)False
Q4) Which of the following types of microbes is most likely to be found in the sediment of Lake Michigan?
A)Mesophiles; temperatures in the hypolimnion support growth in the 4-9°C range
B)Autotrophs; their carbon source is dissolved carbon dioxide
C)Cyanobacteria; seasonal upwelling of nutrients can cause dramatic increases in their numbers
D)Anaerobes; oxygen is least abundant in the sediment layer
Page 26
To view all questions and flashcards with answers, click on the resource link above.
Chapter 25: Applied Microbiology and Food and Water Safety
Available Study Resources on Quizplus for this Chatper
83 Verified Questions
83 Flashcards
Source URL: https://quizplus.com/quiz/49948
Sample Questions
Q1) Preservation of food to limit microbial survival and growth includes
A)high temperature and pressure.
B)pasteurization.
C)refrigeration and freezing.
D)irradiation.
E)All of the choices are correct.
Q2) The organism used to make bleu cheese is ______.
A)Micrococcus
B)Penicillium roqueforti
C)Leuconostoc mesenteroides
D)Propionibacterium
E)Streptococcus lactis
Q3) Which bacteria ferment lactose in milk, producing acids that curdle the milk?
A)Spirulina
B)Streptococcus lactis and Lactobacillus
C)Saccharomyces cerevisiae
D)Pediococcus
E)Leuconostoc mesenteroides
To view all questions and flashcards with answers, click on the resource link above. Page 27