Improper or poor flaming can cause?
Overgrowth and no isolation
Parasitic infections do not account for many infections in the United States t or f
False
Chagas disease is transmitted by
Contact with poop
Plasmodium is transmitted
From a bite of mosquito
. If an organism can transport citrate into the cell, then the result will be ? what color
Blue
Gelatin is a derivative of collagen and a component of ….what ?
Connective tissue of animals
The Durham tube is used for what?
Detects gas produced as a byproduct of fermentation bubbles will appear in the tube
A patient arrives at the clinic complaining of watery diarrhea of 20+ days duration after a hiking trip….negative for bacteria… What is the causative agent of this patient's diarrhea?
Giardia
. A 5 year old patient comes into the hospital with intense anal itching and white, thread-like fibers in the fecal matter, What might doctors find?
Pinworms
. All about oxidative catabolism.
Process when molecules are broken down
glycolysis or aerobic respiration does not require oxygen but may occur in its presence. T/F
True
Match each vector with the disease it causes.
...
organism that lives on decaying matter for nutrition is called a(an)
Fungi saprobes saprophytes
Fungi differ from other microorganisms because they contain what?
Chitin in their cell walls
results obtained from a disk diffusion susceptibility test are what
Susceptible intermediate or resistant
. following sporangium is formed by yeasts except
...
mushrooms are basidiomycetes.
True
. All about Protozzoa
One celled eukaryotic
fungi are chemoheterotrophs.
true.
20. Using the oil immersion lens, but has forgotten to put immersion oil on the slide. The specimen will appear…….???
fuzzy and have poor resolution.
Gram stain on gram-positive bacteria and you stop after the addition of the counterstain. What is the appearance of the bacteria at this point?
purple
Phenol red is used as a …What?
acid pH indicator
The IMViC tests are used to identify which types of microbes
bacteria, especially the members of Enterobacteriaceae. gram negative bacteria
causes mutations by creating thymine dimers
ultraviolet (UV) rays in sunlight
25. After culturing a microbe in a broth test tube, which of the following is an indirect method for estimating the number of microbes in a sample
Turbidity
Causative agent of sleeping sickness
Trypanosoma brucei
Protozoan cysts are resistant to what
many disinfection methods
cell walls of mycobacteria make them vulnerable…to what
water soluble chemical agents
soaps have only degerming activity, not antimicrobial activity
false
Human infestation with Taenia saginata results from ingesting what
raw or undercooked beef tapeworm
vegetative cells are more heat resistant than bacterial endospore
false
the effect of moist heat on the microorganisms
Dry heat-destroys microorganisms by causing coagulation of proteins.
33. Zone of no return…what that means
resistance against the antibiotic.
34. halophile is an organism that prefers to live where?
in high salt concentrations
35. chemical agent is used to kill Clostridium difficile C. Diff on surfaces
bleach
36. normal flora of the human skin. Except!
lungs
37. Gram-positive pleomorphic bacteria commonly found on the skin.
diphtheroids
38. Anthrax derives its name from which of the following aspects
B anthrakis, because of its ability to cause black, coal-like cutaneous eschars.
39. Gram-positive, anaerobic bacillus that causes gas gangrene?
Clostridium. C perfringens
40. Picture about the sensitivity of the bacteria against antibiotic in a petri dish
*dish with dots with no bacteria around it*
41. The kirby-bauer method is widely used for
to measure the sensitivity of bacteria to antibiotics
42. reactive oxygen species (ROS) many bacteria produce the enzyme called _
superoxide dismutases (SOD), catalases and peroxiredoxins,
43. The function of cytochromes in the electron transport system is
electron carriers
44. Oxidase test is used for what ?
identify bacteria that produce cytochrome c oxidase
45. organism that can use oxygen for aerobic respiration, but also can grow without it is called
Facultative anaerobes
47. Turgor pressure is ?
the force within the cell that pushes the plasma membrane against the cell wall.
48. The function of catalase is to convert ….what ?
hydrogen peroxide into water and oxygen
49. staphylococci-ferment the sugar mannitol, which turn the phenol red in the medium around the colony in a ….what kind of color
yellow
50. Which leads to the darkening of the blood agar around the colony called alpha-hemolysis
hemoglobin in the red blood cells is reduced to methemoglobin
51. The MSA agar can be used to test the presence …of what
members of the genus Staphylococcus
52. Which method is used to separate individual bacteria from a mixture.
streak-plate procedure
53. a bacterium that can grow only in the presence of high salt.
Halophiles
Osmosis
the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules
55. Example of bacteria that can grow in high-salt concentrations.
Halobacterium
56. two forms of radiation that are used to kill microorganisms are
gamma rays, x-ray
57. are bacteria that use oxygen for energy production, but only in very low concentrations.
microaerophilic or aerotolerant anaerobes
58. What is a vector.
living organisms that can transmit infectious pathogens between humans, or from animals to humans
59. The best-known arachnid vector is
animals
60. following diseases is NOT transmitted by mosquitoes.
typhoid
61. In the roundworms, their proglottids contain male and female reproductive organs
true
62. Tapeworms bodies are made up of two basic parts: the segment that attaches to the intestine, is known as the scolex.
true