12332620
Pregunta 1
Pregunta
Grouping organisms into categories to show degrees of similarities is called?
Respuesta
-
Systematics
-
Taxonomy
-
Hierarchy
-
Nomenclature
Pregunta 2
Pregunta
Which of the following statements describes the Domain Bacteria?
Respuesta
-
They are multicellular
-
They have linear chromosomes
-
They have prokaryotic cells
-
That have eukaryotic cells
Pregunta 3
Pregunta
What process can be used to increase the amount of microbial DNA to levels that can be tested by gel electrophoresis?
Respuesta
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Phage typing
-
DNA fingerprinting
-
Polymerase chain reaction (PCR)
-
Western blotting
Pregunta 4
Pregunta
Treating DNA from different bacteria with the same restriction enzymes followed by separation of the fragments by electrophoresis is known as
Respuesta
-
DNA base composition
-
DNA fingerprinting
-
The nucleic acid amplification test (NAAT)
-
Ribotyping
Pregunta 5
Pregunta
Which of the following techniques can identify antibodies in a patient’s serum?
Respuesta
-
Flow cytometry
-
Southern blotting
-
Western blotting
-
Phage typing
Pregunta 6
Pregunta
The test that involves a reaction between known antibodies and an unknown bacterium is known as
Respuesta
-
ELISA
-
Phage typing
-
Flow cytometry
-
Southern blotting
Pregunta 7
Pregunta
Genetically related groups of eukaryotes that share a common ancestor are known as
Respuesta
-
Species
-
Clones
-
Strains
-
Clades
Pregunta 8
Pregunta
Which one of the following do NOT apply to eukaryotic cells?
Respuesta
-
Contain 80S ribosomes
-
Have histones
-
Have circular chromosomes
-
Exhibit growth via mitosis
Pregunta 9
Pregunta
Organisms that can form thin tubes called hyphae belong in the Kingdom
Respuesta
-
Animalia
-
Fungi
-
Plantae
-
Protista
Pregunta 10
Pregunta
Historically, eukaryotic organisms that did NOT fit into other kingdoms were placed into which kingdom?
Respuesta
-
Protista
-
Fungi
-
Plantae
-
Animalia
Pregunta 11
Pregunta
Fossil evidence indicates that prokaryotic cells first existed on Earth ___________years ago.
Respuesta
-
3.5 billion
-
3.5 million
-
350,000
-
3500
Pregunta 12
Pregunta
In the scientific name Staphylococcus aureus, Staphylococcus is the
Respuesta
-
class
-
Genus
-
Species epithet
-
Family
Pregunta 13
Pregunta
A clone is
Respuesta
-
The same as a species
-
A population of cells with similar characteristics
-
A freely interbreeding population
-
A population of cells derived from a single parent cell
Pregunta 14
Pregunta
The two domains of prokaryotes are
Respuesta
-
Bacteria and Archaea
-
Bacteria and Fungi
-
Archaea and Fungi
-
Bacteria and Protista
Pregunta 15
Pregunta
Which of the following bacteria LACKS a cell wall?
Respuesta
-
Borrelia
-
Clostridium
-
Mycoplasma
-
Mycobacterium
Pregunta 16
Pregunta
Which one of the following is NOT a category of Archaea?
Respuesta
-
Halophiles
-
Pathogens
-
Thermophiles
-
Acidophiles
Pregunta 17
Pregunta
Nitrogen-fixing bacteria that infect the roots of leguminous plants are known as
Respuesta
-
Nanobacteria
-
Cyanobacteria
-
Pseudomonads
-
Rhizobia
Pregunta 18
Pregunta
The largest bacterium discovered, found in sediments of the coastal waters off Namibia, belongs to the genus
Respuesta
-
Mycobacterium
-
Pseudomonas
-
Thiomargarita
-
Staphylococcus
Pregunta 19
Pregunta
Alphaproteobacteria often have stalk-like or budlike protrusions known as
Respuesta
-
Axial filaments
-
Myxospores
-
Prosthecae
-
Elementary bodies
Pregunta 20
Pregunta
Which of the following is NOT a member of the order Enterobacteriales?
Respuesta
-
Pseudomonas
-
Escherichia
-
Salmonella
-
Shigella
Pregunta 21
Pregunta
The MOST common infectious genus in the world which ONLY lives inside the cells of insects is
Respuesta
-
Coxiella
-
Brucella
-
Wolbachia
-
Bartonella
Pregunta 22
Pregunta
The phylogenetic relationship among proteobacteria is based on ________studies.
Respuesta
-
rRNA
-
mRNA
-
DNA
-
tRNA
Pregunta 23
Pregunta
Which of the following causes syphilis?
Respuesta
-
Treponema pallidum
-
Leptospira interrogans
-
Cytophaga spp.
-
Borrelia burgdorferi
Pregunta 24
Pregunta
Which of the following is NOT assigned to the phylum Firmicutes?
Respuesta
-
Enterobacteriales
-
Clostridiales
-
Lactobacillales
-
Mycoplasmatales
Pregunta 25
Pregunta
Which genus of bacteria is responsible for more illnesses and diseases than any other group of bacteria?
Respuesta
-
Streptococcus
-
Enterococcus
-
Staphylococcus
-
Bacillus
Pregunta 26
Pregunta
What is the common cause of yeast infections?
Respuesta
-
Aspergillus fumigatus
-
Candida albicans
-
Histoplasma capsulatum
-
Penicillium chryosogenum
Pregunta 27
Pregunta
Which of the following is the MOST common life-threatening infection in AIDS patients?
Respuesta
-
Aspergillus
-
Candida
-
Rhizopus
-
Pneumocystis
Pregunta 28
Pregunta
What term refers to fungal infections deep within the body?
Respuesta
-
Systemic mycoses
-
Cutaneous mycoses
-
Subcutaneous mycoses
-
Superficial mycoses
Pregunta 29
Pregunta
Algae with complex cell walls made of pectin and a layer of silica are
Respuesta
-
Diatoms
-
Green algae
-
Red algae
-
Dinoflagellates
Pregunta 30
Pregunta
Which type of algae can live at greater ocean depths than other algae?
Respuesta
-
Blue algae
-
Red algae
-
Brown algae
-
Green algae
Pregunta 31
Pregunta
The body of a multicellular algae is called a
Respuesta
-
Mycelium
-
Hypha
-
Pseudopod
-
Thallus
Pregunta 32
Pregunta
Paralytic shellfish poisoning is caused by dinoflagellates that secrete a neurotoxin known as
Respuesta
-
Aflatoxin
-
Endotoxin
-
Exotoxin
-
Saxitoxin
Pregunta 33
Pregunta
The feeding or growing stage of a protozoan is called the
Respuesta
-
Merozoite
-
Hypnozoite
-
Trophozoite
-
Sporozoite
Pregunta 34
Pregunta
Amebic dysentery is caused by which of the following human pathogens?
Respuesta
-
Acanthamoeba
-
Naegleria
-
Entamoeba
-
Trichomonas
Pregunta 35
Pregunta
Which of the following pairs is mismatched?
Respuesta
-
Mosquito-epidemic typhus
-
Flea-plague
-
Tick-Rocky Mountain spotted fever
-
Mosquito-malaria
Pregunta 36
Pregunta
The sexual reproduction of Plasmodium takes place in the gut of a
Respuesta
-
Tick
-
Mosquito
-
Human
-
Flea
Pregunta 37
Pregunta
Which of the following is the vector of Lyme disease?
Respuesta
-
Tick
-
Head louse
-
Mite
-
Mosquito
Pregunta 38
Pregunta
Arthropods that carry pathogenic microorganisms are called
Respuesta
-
Vehicles
-
Vectors
-
Fomites
-
Reservoirs
Pregunta 39
Pregunta
Which of the following is TRUE regarding viruses?
Respuesta
-
Virions contain both DNA and RNA
-
They multiply by binary fission
-
They are sensitive to antibiotics
-
They are not composed of cells
Pregunta 40
Pregunta
Which of the following is NOT a morphological type of virus?
Respuesta
-
Helical
-
Polymorphic
-
Polyhedral
-
Enveloped
Pregunta 41
Pregunta
Viruses that infect bacteria are called
Respuesta
-
Bacteriophages
-
Prions
-
Viroids
-
Antisense viruses
Pregunta 42
Pregunta
Capsids are composed of protein subunits known as
Respuesta
-
Capsomeres
-
Spikes
-
Envelopes
-
Tail fibers
Pregunta 43
Pregunta
It is hypothesized that viroids evolved from
Respuesta
-
Viruses
-
Exons
-
Introns
-
Prions
Pregunta 44
Pregunta
Prion diseases can be acquired via ALL of the following EXCEPT
Respuesta
-
Ingestion
-
Inhalation
-
Contaminated surgical instruments
-
Transplanted nerve tissue
Pregunta 45
Pregunta
Scrapie is an example of a ________ disease found in sheep and caused by a prion.
Respuesta
-
Neurological
-
Gastrointestinal
-
Respiratory
-
Cardiovascular
Pregunta 46
Pregunta
Viroids infect
Respuesta
-
Animals
-
Protozoans
-
Plants
-
Bacteria
Pregunta 47
Pregunta
A viroid is a
Respuesta
-
Provirus
-
Naked, infectious piece of RNA
-
Capsid without a nucleic acid
-
Complete, infectious virus particle
Pregunta 48
Pregunta
What percentage of cancers are known to be virus-induced?
Respuesta
-
10%
-
25%
-
50%
-
100%
Pregunta 49
Pregunta
The ability of retroviruses to induce tumors is related to which enzyme?
Respuesta
-
Reverse transcriptase
-
RNA polymerase
-
DNA polymerase
-
Protease
Pregunta 50
Pregunta
Cancer-causing alterations to cellular DNA affect parts of the genome called
Respuesta
-
Introns
-
Oncogenes
-
Exons
-
Promoters
Pregunta 51
Pregunta
Which of the following is NOT an effect of transformation?
Respuesta
-
T antigens appear in the nucleus of the cell
-
Cells lose their ability to divide
-
Cells tend to exhibit chromosomal abnormalities
-
Tumor-specific transplantation antigens appear on the cell surface.
Pregunta 52
Pregunta
Which of the following is an example of a latent viral infection in humans?
Respuesta
-
Measles
-
HIV/AIDS
-
Shingles
-
Influenza
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