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81 Cards in this Set
- Front
- Back
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A bacterial process of recombination that requires cell-to-cell contact is called?
A.) transformation B.) transduction C.) conjugation D.) cell typing |
C.) Conjugation
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A bacterial process of recombination that involves the uptake of naked DNA is called:
A.) transformation B.) transduction C.) conjugation D.) cell typing |
A.) transformation
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Which of the following is a protozoan that is transmitted by mosquito?:
A.) Trichomonas vaginalis B.) Typanosoma bucei C.) Plasmodium falciparum D.) Toxoplasma gondi |
C.) Pasmodium falciparum
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Staphylococcus aureus causes:
A.) Food poisoning B.) Scarlet fever C.) Hemorrhagic fever D.) Common cold |
A.) Food poisoning
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Strptococcus pyogenes is involved in the development of:
A.) scalded skin syndrome B.) food poisoning C.) rheumatic fever D.) pelvic inflammatory disease |
C.) rheumatic fever
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Clostridium perfringens causes:
A.) tetanus B.) gas gangrene C.) lock jaw D.) botulism |
A.) tetanus
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Candida albicans causes:
A.) erysipelas B.) acne C.) vaginitis D.) tubercles |
C.) vaginitis
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Anthrax is caused by a
A.) bacterium B.) fungus C.) roundworm D.) protist |
A.) bacterium
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A diseased that has been eradicated is:
A.) bubonic plague B.) histoplasmosis C.) cryptococcosis D.) smallpox |
D.) smallpox
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The usefullness of penicillin for treating bacterial infections was discovered by:
A.) Lister B.) Pasteur C.) Fleming D.) Koch |
C.) Fleming
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Who first proved the germ theory of disease?:
A.) Lister B.) Pasteur C.) Fleming D.) Koch |
D.) Koch
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Who first utilized aseptic technique in hospitals?
A.) Lister B.) Pasteur C.) Fleming D.) Koch |
A.) Lister
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A component that is common in prokaryotes but not found in eukaryotes is:
A.) Protein B.) Peptidoglycan C.) Polysaccharide D.0 tRNA |
B.) Peptidoglycan
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One hundred degrees centigrade can be tolerated by:
A.) bacterial spores B.) yeast spores C.) protozoa D.) cysts |
A.) bacterial spores
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Bacterial motility is produced by:
A.) pili B.) flagella C.) cilia D.) lysozyme |
B.) flagella
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A capsule is a virulence factor for:
A.) Staphylococcus aureus B.) adenovirus C.) Stretococcus pneumoniae D.) Histoplasma capsulatum |
C.) Stretococcus pneumoniae
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Energy production occurs in:
A.) the yeast Golgi apparatus B.) the bacterical cytoplasmic membrane C.) lipteichoic acid D.) lipopolysaccharide |
B.) the bacterical cytoplasmic membrane
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Fungi contain:
A.) lipopolysaccharide B.) peptidoglycan C.) flagella D.) chitin |
D.) chitin
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Capsules are comprised of:
A.) polysaccharide B.) protein C.) DNA D.) RNA |
A.) polysaccharide
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Bubonic plague is transmitted by:
A.) mosquitoes B.) ticks C.) fleas D.) water |
C.) fleas
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The most important difference between eukaryote and a prokaryote is:
A.) cilia B.) flagella C.) the presence of a cytoplasmic membrane D.) the presence of a nucleus |
D.) the presence of a nucleus
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An autotroph is an organism that can use:
A.) sodium nitrates as a nitrogen source B.) carbon dioxide as a carbon source C.) water as an oxygen source D.) oxygen in the air as an oxygen source |
B.) carbon dioxide as a carbon source
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A bacterium that grows only in the absence of oxygen is a/an:
A.) faculative anaerobe B.) obligate anaerobe C.) aerobe D.) obligate aerobe |
B.) obligate anaerobe
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An organism that grows well @ 37 degrees C is a/an:
A.) auxotroph B.) mesophile C.) psychrophile D.) thermophile |
B.) mesophile
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A bacterum that has a generation time of thirty minutes is grown for four hours. If only one bacterium is present at the start, about how many bacteria will result?
A.) 1 B.) 4 C.) 16 D.) 256 |
D.) 256
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Rapid growth of bacteria occurs in the
A.) stationary phase B.) log phase C.) lag phase D.) decline (or death) phase |
B.) log phase
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The building blocks for translation are
A.) proteins B.) carbohydrates C.) amino acids D.) deoxyribonucleotides |
C.) amino acids
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The most effective way for bacteria to transfer multiple antibiotic resistance is by:
A.) chromosomal transfer by conjugation B.) plasmid transfer by conjugation C.) phage transfer D.) the flagella |
B.) plasmid transfer by conjugation
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The majority of human pathogens are:
A.) halophiles B.) thermophiles C.) psychrophiles D.) mesophiles |
D.) mesophiles
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What causes the reaction of anabolism and catabolism to occur?
A.) enzymes B.) catalase C.) substate D.) lipids |
A.) enzymes
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Conjunctivitis in the newborn is often caused by:
A.) Chlamydia or Neisseria gonorrhea B.) Neisseria meningitidis or Rickettsia prowazekii C.) Chlamydia or Mycobacteria D.) Bordetella or Salmonella |
A.) Chlamydia or Neisseria gonorrhea
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How do Cyanobacteria obtain their energy?:
A.) A food chain B.) Photosynthesis C.) Saprobe D.) Commensalism |
B.) Photosynthesis
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Spontaneous changes in gene occurs because of:
A.) mutagenesis B.) transduction C.) conjugation D.) transformation |
A.) mutagenesis
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Pasteurization of milk involves:
A.) autoclaving B.) irradiation C.) heating the milk to temperatures less than boiling. D.) heating the milk to boiling temperatures. |
C.) heating the milk to temperatures less than boiling.
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What cell type mediates allergic reations in the tissues?
A.) Basophil B.) Mast cell C.) Macrophage D.) suppressor T cell |
B.) Mast cell
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The smallest chemical recognized by an Ab is called a:
A.) protein B.) lipid C.) hapten D.) sugar |
C.) hapten
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The genus of the organism that is the cause of a severe intestinal infection is:
A.) Enterococcus B.) Vibrio C.) Streptococcus D.) Cholera |
B.) Vibrio
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It is most important to obtain an isolated culture from a respiratory infection because:
A.) all bacteria in the throat must be treated in the case of pharyngitis. B.) An identification in not otherwise possible. C.) this is the only way the microbes can be observed in the microscope D.) The microbe will not grow otherwise |
B.) An identification in not otherwise possible.
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The lactose repressor protein:
A.) stops genes needed for lactose metabolism from being expressed B.) turns on the lactose metabolic genes C.) cleaves lactose to monosaccharides D.) is expressed when bacteria need to make lactose |
A.) stops genes needed for lactose metabolism from being expressed
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Pathogenic bacteria often attach to human tissue by means of:
A.) the capsule B.) flagella C.) sex pilus D.) fimbriae |
D.) fimbriae
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What component of the bacterial cell wall gives it rigidity?
A.) Polysaccharide B.) Peptidoglycan C.) Phospholipid D.) Transport proteins |
B.) Peptidoglycan
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The gelatinous content within the bacterial envelope is called the:
A.) nucleus B.) golgi apparatus C.) cytoplasm D.) lipoteichoic acid |
C.) cytoplasm
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The correct morphological term for a rod-shaped bacterium is:
A.) vibrio B.) coccus C.) bacillus D.) streptococcus |
C.) bacillus
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The organism that cannot grow outside of a living host is
A.) Cyanobacter B.) Chalmydia C.) Mycoplasma pneumoniae D.) Mycobacterium leparae |
B.) Chalmydia
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When bacteria carry out respiration, the electrons finally travel through the electron transport chain to what component?
A.) oxygen B.) the ATP synthetase C.) The cyctoplasmic membrane D.) water |
A.) oxygen
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The most important cellular organelle in the destruction of a pathogen is the:
A.) nucleus B.) endoplamic reticulum C.) Lysosome D.) Golgi comples |
C.) Lysosome
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Which of the following indicate the correct relationship for fungi?
A.) yeast and septa B.) molds and budding C.) yeast and hyphae D.) molds and hyphae |
D.) molds and hyphae
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Which of the following can fix nitrogen?
A.) Cyanobacter B.) Candida C.) Shigella D.) Mycoplasma |
A.) Cyanobacter
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All of the following are part of the bacterial flagella except:
A.) the basal body B.) the flagellin C.) the hook D.) lipopolysaccharide |
D.) lipopolysaccharide
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Which process produces the greatest amount of energy?
A.) the citric acid cycle B.) Electron transport C.) transport proteins D.) Gylcolysis |
B.) Electron transport
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The most common cause of mononucleosis is:
A.) Neisseria gonorrhoeae B.) herpes simples viruse tyep II C.) Treponema pallidum D.) Epstein-Barr virus |
D.) Epstein-Barr virus
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If a double-stranded DNA virus has a 40% G+C content, how much A will be present?
A.) 25% B.) 30% C.) 35% D.) 40% |
B.) 30%
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Which of the following statement is incorrect concerning viruses?
A.) All viruses are intracellular parasites. B.) All viruses contain a nucleocapsid C.) All viruses contain either DNA or RNA, but not both. D.) all viruses can be visualized under a light microscope |
D.) all viruses can be visualized under a light microscope
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A capsomere is
A.) a viral envelope B.) the viral nucleic acid plus first layer of protein C.) the protein subunit of which the viral coat is made. D.) the viral nucleic acid |
C.) the protein subunit of which the viral coat is made.
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The presence of virus particles in blood is called:
A.) syncytia B.) bacteremia C.) viremia D.) polycytaemia |
C.) viremia
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Which of the following does not occur in the life cycle of all viruses?
A.) Transformation B.) penetration C.) replication D.) attachment |
A.) Transformation
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When a bacteriophage becomes lysogenic, it:
A.) kills the cell B.) lyses the cell C.) loses its ability to grow D.) integrates its DNA into the host but does not grow |
D.) integrates its DNA into the host but does not grow
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In the life cycle of a virus, uncoating refers to:
A.) removing the outer layers of the virus B.) stripping open a spot in the host cell so that the virus can gain entry. C.) allowing the cell to read the codons. D.) release of the virion from the cell. |
A.) removing the outer layers of the virus
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Syncytia are characterized by:
A.) formation of plagues B.) infection of synovial fluid C.) multinucleate giant cells D.) viruses in clumps |
C.) multinucleate giant cells
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Chemically, the most abundant part of a living microbe is
A.) protein B.) DNA C.) RNA D.) water |
D.) water
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The specific charateristic of heterotrophs is that they:
A.) obtain iron from the soil B.) need high concentrations of salts C.) obtain carbon from organic compounds D.) can fix nitrogen |
C.) obtain carbon from organic compounds
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The greatest number of yearly infections is caused by:
A.) yeast B.) molds C.) viruses D.) bacteria |
C.) viruses
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Microbes that require special growth factors are called:
A.) picky B.) fastidious C.) autotrophs D.) dibilitated |
B.) fastidious
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The acquisition of nutrients from the surrounding medium by an energy-requiring process is called:
A.) diffusion B.) active transport C.) osmosis D.) brownian movement |
B.) active transport
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An organism that grows at pH 2 would be called:
A.) an acidophile B.) a basophile C.) an alkalophile D.) a pshychrophile |
A.) an acidophile
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What do sulfa drugs inhibit?
A.) lysis B.) folic acid synthesis C.) 70S ribosomes D.) Cell wall synthesis |
B.) folic acid synthesis
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Symbiosis usually refers to:
A.) similar habitats B.) one organism being helped by a second while the second is neither helped nor harmed C.) two organisms mutually helping each other to grow D.) one organism is being helped by a second while the second is detrimental to the first. |
B.) one organism being helped by a second while the second is neither helped nor harmed
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An appropriate test to measure the number of living bacteria is:
A.) Use of a Coulter counter to count particles. B.) viable plate count C.) turbidity D.) mass determination by weight |
B.) viable plate count
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The most important advantage of solid media over broth is that it allows:
A.) a greater variety of organisms to grow B.) a greater temperature range to be used. C.) specific colonies to be isolated D.) more nutrients to be supplied to the bacteria. |
C.) specific colonies to be isolated
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Which of the following statements is correct about bacterial growth:
A.) Bacteria routinely split from one cell into three. B.) At the end of the log phase, bacteria go into the stationary phase. C.) Bacteria increase according to these numbers: 1-2-4-6-8. D.) Bacilli grow by increasing in diameter. |
B.) At the end of the log phase, bacteria go into the stationary phase.
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When rod-shaped bacteria are found in chains, the proper prefix to use for morphology is:
A.) tetra- B.) diplo_ C.) staphylo- D.) strepto_ |
D.) strepto_
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Which of the following statements concerning the Gram's stain is correct?
A.) All cocci stain purple and all bacilli stain pink. B.) Spirochetes always stain purple C.) All bacteria stain either pink or purple D.) Bacilli may stain pink or purple |
D.) Bacilli may stain pink or purple
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Which kinds of microbes are observed from water puddles when observed in the light microscope?
A.) all kinds except viruses B.) parasites only C.) fungi only D.) bacteria only |
A.) all kinds except viruses
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Concerning the lac operon of E coli:
A.) lactose is the repressor. B.) a protein is the inducer. C.) when the inducer is bound to the repressor, the operon is active D.) it is called a repressible operon |
C.) when the inducer is bound to the repressor, the operon is active
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Mutations
A.) occur in RNA B.) are inherited from generation to generation C.) occur in protein D.) occur in people not microbes |
B.) are inherited from generation to generation
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Mutations are caused by:
A.) x-rays B.) antibiotics C.) streaking the cells on a petri dish D.) hospitals that treat infectious diseases. |
A.) x-rays
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The Ames test is used to:
A.) detect useful antibiotics B.) qualify bacteria for diagnostic testing C.) identify mutagens D.) determine RNA damage in mutants |
C.) identify mutagens
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Sterilization indicates:
A.) an antiseptic B.) asepsis C.) sanitization D.) an absence of life |
D.) an absence of life
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Detergents primarily act on microbes by:
A.) dissolving the lipid membrane B.) stopping catabolism C.) inhibiting replication D.) inhibiting transcription |
A.) dissolving the lipid membrane
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Autoclave sterilization is generally achieve at:
A.) 100 degrees C @ 15 # of pressure for 10m. B.) 100 degrees C @ 21 # of pressure for 10m. C.) 121 degrees C @ 15 # of pressure for 15m. D.) 121 degrees C @ 21 # of pressure for 60m. |
C.) 121 degrees C @ 15 # of pressure for 15m.
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The beta-lactam ring of penicillins is destroyed by
A.) capsular action B.) B-lactamse C.) M protein D.) pili |
B.) B-lactamse
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