Exam 2 Wainright

(b) a bullseye shaped rash around tick bite

An early symptom which may indicate Lyme disease infection
(a) hair loss
(b) bullseye shaped rash around tick bite
(c) bleeding from the nose
(d) growth of udders
(e) a and d are correct

(c) Legionella pneumophila

A disease outbreak associated with hotel air conditioner ducts in Philadelphia in 1976 was found to be caused by
(a) Yersinia pestis
(b) Rabies virus
(c) Legionella pneumophila
(d)Serratia marcescens
(e) Streptococcus pyogenes

(e) a and b are correct

Following a Campylobacter infection, a patient suffered a transient period of paralysis.
(a) this is Guillain-Barre Syndrome
(b) this complication has also been linked to some vaccinations
(c) this is rabies
(d) the mortality rate of this is 100%
(e) a and b are correct

(e) all of the above

A mixture of microbes is collected and quadrant streaked for colony isolation. An isolated colony is then examined for which characteristics?
(a) texture
(b) color
(c) elevation
(d) shape of margin
(e) all of the above

(c) compartment

Which is not a recognized biological taxonomic category?
(a) genus
(b) species
(c)compartment
(d) phylum
(e) all are recognized categories

(e) all are correct

The term methanogen would suggest
(a) an archaea
(b) an anaerobe
(c) a producer of methane
(d) CO2 as terminal electron acceptor
(e) all are correct

(b) Clostridium tetani

Which of the following bacteria are obligate anaerobes?
(a) Micrococcus luteus
(b) Clostridium tetani
(c) Pseudomonas aeruginosa
(d) Lactobacillus delbrueckii
(e) c and d are correct

(b) Campylobacter jejuni

A bacterium is grouped as a gram negative curved rod (vibrio). Which of the following fit that description?
(a) Escherichia coli
(b) Campylobacter jejuni
(c) Streptococcus mutans
(d)Bacillus anthracis
(e) Streptobacillus moniliformis

(e) all are correct

Which of the following is an obligate intracellular parasite?
(a) Rickettsia
(b) Chlamydia
(c) Ehrlichia
(d) Coxiella
(e) all are correct

(b) Neisseria gonorrhea

Gram negative diplococcus would be a bacterial grouping that includes
(a) Treponema pallidum
(b) Neisseria gonorrhea
(c) Clostridium perfringens
(d) Rickettsia prowazekii
(e)Candida albicans

(e) all are terrestrial

Which of the following bacteria are terrestrial?
(a) Clostridium
(b) Bacillus
(c)Streptomyces
(d) Rhizobia
(e) all are terrestrial

(a) Bacillus subtilis

Gram positive rod would be a correct description of
(a) Bacillus subtilis
(b)Staphylococcus epidermidis
(c) Escherichia coli
(d) Borrelia burgdorferi
(e) Micrococcus roseus

(a) azotobacter

Fixing atmospheric nitrogen into ammonia or nitrates would be a function of
(a) Azotobacter
(b) Enterobacter
(c) Campylobacter
(d) Helicobacter
(e) Streptococcus

(c) Mycobacterium smegmatis

Acid fast bacteria include
(a) Treponema pallium
(b) Mycoplasma pneumonia
(c)Mycobacterium smegmatis
(d) Rickettsia ricketsii
(e) Neisseria meningitidis

(e) all are correct except d

The bacterium that causes syphilis
(a) is a spirochete
(b) moves by axial filament
(c) is grouped with the bacterium that causes Lyme disease
(d) is Streptococcus epidermidis
(e) all are correct except d

(e) all are correct

Which of the following is/are characteristic of algae?
(a) chlorophyll a
(b) aquatic
(c) no roots or vascular system
(d) oxygenic
(e) all are correct

(a) Gonyaulax

Paralytic shellfish poisoning is associated with
(a) Gonyaulax
(b) Gonorrhea
(c) Exlax
(d) Goshamity
(e) Gollygee

(e) a, b, and c are correct

Diatoms
(a) have silicon in their cell walls
(b) are algae
(c) may release domoic acid
(d) are two bacteria joined together
(e) a, b, and c are correct

(e) c and d are correct

A red tide would suggest
(a) a good time to eat oysters
(b) a good time to eat mushrooms
(c) proliferation of Gymnodinium brevis in the coastal waters
(d) high risk of algal toxins in the shellfish
(e) c and d are correct

(e) c and d are wrong

Which are characteristic of protozoa?
(a) unicellular
(b) motile
(c) photosynthetic
(d) exclusively sexual reproduction
(e) c and d are wrong

(d) Trypanosoma brucei gambiense

Disease causing, flagellated protozoans of the phylum Sarcomastigophora include
(a)Gymnodinium brevis
(b) Plasmodium malariae
(c) Agarics campestris
(d) Trypanosoma brucei gambiense
(e) Felis leo

(a) Plasmodium falciparum

What disease causing Organism is vectored by the anopheles mosquito?
(a) Plasmodium falciparum
(b) Naegleria fowleri
(c) Leishmania donovanii
(d) Borrelia burgdorferi
(e)Trypanosoma cruzi

(e) a and b are correct

Disease causing protozoans of the phylum Apicomplexa include
(a) Toxoplasma gondii
(b) Plasmodium malariae
(c) Entamoeba histolytica
(d) Balantidium coli
(e) a and b are correct

(e) all of the above

Which of the following is characteristic of fungi?
(a) terrestrial
(b) non-motile
(c) non-photosynthetic
(d) sexual and asexual reproduction
(e) all of the above

(d) the black fly

The biological vector of Onchocerca volvulus (river blindness) is
(a) Anopheles mosquito
(b) Dermacentor andersoni tick
(c) TseTse fly
(d) the black fly
(e) Xenopsylla cheopis flea

(e) all are correct

Viruses that infect bacteria
(a) are bacteriophages
(b) may have a complex anatomy
(c)include phage T4
(d) may cause the bacterium to release toxins
(e) all are correct

(b) it causes the host bacterium to rupture

A bacteriophage is described as lytic. This means
(a) it is an RNA virus
(b) it causes the host bacterium to rupture
(c) it remains dormant in the bacterial chromosome
(d) it causes oncogene activation
(e) it leaves the host bacterium without damaging it

(e) a and c are correct

Lysogenic conversion is observed in
(a) diphtheria
(b) rabies
(c) scarlet fever
(d) tetanus
(e) a and c are correct

(e) all are correct

The influenza virus
(a) is an RNA virus
(b) has an envelope with spikes
(c) demonstrates antigenic variation (seasonal changes)
(d) is of the Orthomyxoviridae family
(e) all are correct

(b) rhabdoviridae

Rabies is caused by a virus of which family?
(a) Picornaviridae
(b) rhabdoviridae
(c) bunyaviridae
(d) retroviridae
(e) herpesviridae

(e) c and d are correct

Agar is used as a growth medium for bacteria because
(a) the Bacteria can metabolize it
(b) it Is liquid at room temperature
(c) it is not consumed by the bacteria
(d)it is solid at room temperature
(e) c and d are correct

(b) beef extract

A complex medium, such as nutrient agar, might contain
(a) antibiotics
(b) beef extract
(c) arsenic
(d) vinegar
(e) a and d are correct

(a) fungi

Which eukaryotic cell is terrestrial, non-motile, non-photosynthetic, and has a cell membrane containing ergosterol?
(a) fungi
(b) algae
(c) protozoa
(d) animal
(e) plant

(a) mitochondria

Which eukaryotic organelle performs ATP synthesis?
(a) mitochondria
(b) ribosomes
(c) lysosomes
(d) peroxisomes
(e) all are correct

(a) modification of polypeptides

Which is a function of the endoplasmic reticulum?
(a) modification of polypeptides
(b) oxidation of glucose
(c) physical support of cell structure
(d) packaging proteins for export
(e) c and d are correct

(a) cellulose

Structural support of the cell wall of plants and algae would include
(a) cellulose
(b) rubber
(c) concrete
(d) steel
(e) peptidoglycan

(d) a, b, and c are true

Characteristic of protozoan cells include
(a) unicellular
(b) marine, freshwater, and terrestrial
(c) motility
(d) a, b, and c are true
(e) 70 s ribosomes

(e) b and c are correct

The time required for one bacterium to become two, for two to become four, and for four to become eight
(a) is always 30 minutes
(b) is the generation time
(c) is made longer by refrigeration
(d) is about 6 hours for Escherichia coli
(e) b and c are correct

(b) the stationary phase

That part of the bacterial growth curve in which the number being born is equal to the number dying is
(a) the log phase
(b) the stationary phase
(c) the death phase
(d) the twilight phase
(e) the nuclear phase

(c) 2,400 (300 x 2^3)

300 bacteria in the baked beans at 12 noon. Generation time 20 minutes. Given optimal growth conditions, calculate how many will be present at 1:00 p.m.
(a) 3,600
(b) 4,800
(c) 2,400
(d) 100,000
(e) 122, 555

(b) this is a hyperthermophile

An archaea is observed to grow best at 99 degrees Celsius.
(a) this is a psychrophile
(b) this is a hyperthermophile
(c) this is a characteristic of Listeria monocytogenes
(d) this is impossible
(e) a and d are correct

(a) salt 20%

In our lab, which physical agent was most affective in controlling bacterial growth?
(a) salt 20%
(b) pH 7
(c) pH 9
(d) hot
(e) no UV

(b) hydrogen peroxide

In our lab, the antiseptic which out performed the disinfectants in controlling bacterial growth was
(a) water
(b) hydrogen peroxide
(c) isopropyl alcohol
(d) Listerine
(e) iodine

(c) chloramphenicol

The antibiotic tested in our lab which was highly effective but is dangerous due to a risk of aplastic anemia was
(a) erythromycin
(b) ampicillin
(c) chloramphenicol
(d) bacitracin
(e)Tylenol

(b) Pseudomonas

Which bacterium is an obligate aerobe?
(a) Clostridium
(b) Pseudomonas
(c) Streptococcus
(d) Proteus
(e) Lactobacillus

(b) taxonomy

The science of identifying, classifying, and naming biological organisms is
(a) toxicology
(b) taxonomy
(c) taxidermy
(d) tachycardia
(e) f is the best answer
(f) telepathy

(b) gram positive cocci

To which phenotype group does Streptococcus pyogenes belong?
(a) Gram negative rods
(b) Gram positive cocci
(c) Gram negative curved rods
(d) those with no cell wall
(e) Gram negative spirochete

(e) only b is wrong

Phylum firmicutes includes
(a) the Gram positive bacteria
(b) the Gram negative bacteria
(c) Clostridium
(d) Bacillus
(e) only b is wrong

(b) terrestrial

When grouped by ecophysiology, Streptomyces would be classified as
(a) aquatic
(b) terrestrial
(c) inhabitant of skin
(d) mucous membrane inhabitant
(e) plant root associate

(b) quadrant streaking

The method used in our labs to separate microbe from microbe for the purpose of culturing isolated colonies is called
(a) flame sterilization
(b) quadrant streaking
(c)spectrophotometry
(d) mass transit
(e) common courtesy