- Chemically pure, know every component and made with specific chemicals. (Grows most chemoheterotrophs)
- Inhibits synthesis of FOLIC ACID and interferes with NUCLEIC ACID BIOSYNTHESIS
- DNA/RNA, structural proteins and may have enzymes and nucleic acid binding proteins
- Inhibits CELL WALL BIOSYNTHESIS via inhibition of Penicillin Binding Proteins (interfering with transpeptidation step)
- Temporary storage of specimens. Maintains viability of all organisms in specimen. Has no nutrients, just buffers and salts so no growth or death.
- __________ test is used to differentiate Staphylococci from StreptococciA) CAMTB) Coagulase testC) Citrate testD) Catalase Test
- Excreted by bacteria during fermentation (in yoghurt)
- Which of the following is a symptom of brucellosis?A) gastroenteritisB) relapsing feverC) undulant feverD) pneumoniaE) jaundice
- What is the most serious pathogen within the genus Staphylococcus?A) Staphylococcus epidermidisB) Staphylococcus saprophyticusC) Staphylococcus hominisD) Staphylococcus aureusE) Staphylococcus capitis
- which of the following is NOT part of the body’s first line of defense ?A) skinB) mucous membraneC) salivaD) fever
- Which of the following statements about salmonellosis is FALSE?A) It is a bacterial infection.B) Severity of disease depends on number of organisms ingested.C) A healthy carrier state exists.D) The mortality rate is high.E) It is often associated with poultry products
- Which of the following organisms causes bloody diarrhea ?A) Giardia lambliaB) Salmonella entericaC) Taenia sppD) Vibrio parahaemolyticusE) Entamoeba histolytica
- Which of the following is NOT a characteristic of Bacillus anthracis?A) is aerobicB) is gram - positiveC) forms endosporesD) found in soilE) produces endotoxins
- ___________ test is used to confirm the presence of S. aureusA) CAMP testB) Coagulase testC) Catalase TestD) Citrate test
- Autotrophic bacteria are those whichA) are highly susceptible to penicillinB) produce a blue-green pigmentC) form a long chain glycocalyxD) make their own food
- which of the following organisms would MOST likely be sensitive to natural penicillin ?A) helminthsB) Streptococcus pyogenesC) penicillinase-producing Neisseria gonorrhoeaeD) candida albicansE) Mycoplasma
- Nonspecific immune mechanisms do not includeA) chemokinesB) complement;C) defensinsD) memory cells;E) Interferon type
- The bacterium Helicobacter pylori, common cause of peptic ulcers, belongs to which of the followingA) BetaproteobacteriaB) FurmicutesC) Non-proteobacteriaD) EpsilonproteobacteriaE) None of those
- A type of cell culture that can reproduce for an extended number of generations and is used to support viral replication is a :A) primary cell cultureB) Continuous cell lineC) Cell strainD) Diploid fibroblast cellE) Connective tissue
- The term facultative anaerobe refers to an organism thata) Doesn't use oxygen but tolerates it.b) is killed by oxygenc) uses oxygen when present or grows without oxygen when absentd) requires less oxygen than is present in air