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MCB 2010 Final
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- NUR 240 EXAM 2 Practice Questions.
Exam of 12 pages for the course NUR 240 EXAM 2 Practice Questions. at NUR 240 EXAM 2 Practice Questions. (MCB 2010 Final)
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MCB 2010 Final_____stains are used for staining smears because bacterial cells have a slight ____
charge - ANS-Cationic/Negative
A bacterial cell containing 1% solutes is placed in a test tube containing 2% salt. Which
of these is true? - ANS-Water will leave the cell
A bacterium's generation time is determined during which phase of the growth curve? -
ANS-Log phase
A cell may allow a large or charged chemical to move across the cytoplasmic
membrane, down the chemical's electrical and chemical gradients, in a process called: -
ANS-Facilitated diffusion
A cell that uses an organic carbon source and obtains energy from light would be called
a: - ANS-Photoheterotroph
A culturing medium containing substances that either favor the growth of particular
microorganisms or inhibit the growth of unwanted ones is called: - ANS-Selective media
A disease in which a pathogen remains inactive for a long period of time before
becoming active is termed: - ANS-Latent disease
A disease in which symptoms develop rapidly & that runs its course quickly - ANS-Acute
disease
A disease that occurs at a greater than normal frequency for a given area or population
- ANS-Epidemic
A disease that occurs at a relatively stable frequency within a given area or population,
but can occur on more than one continent. - ANS-Endemic
A disease that occurs in only a few scattered cases within a given area or population
during a given period of time - ANS-Sporadic
A disease transmitted from one host to another - ANS-Communicable disease
, A disease with usually mild symptoms that develops slowly and lasts a long time -
ANS-Chronic disease
A housefly carrying microbes from garbage to food that humans will ingest is an
example of: - ANS-Mechanical vector
A microbicidal agent has what effect? - ANS-Kills microbes
A motile feeding stage of a protozoan is called: - ANS-A trophozoite
A pathogen would most accurately be described as a: - ANS-Parasite
A patient can be infectious during which of these stages of disease? - ANS-A. Prodomal
B. Incubation C. Disease D. Convalescense E. ALL OF THE ABOVE
A patient comes into your office complaining about a sore that they have had for a
week. You look at the sore and see that it is oozing a thick puss that has an unfavorable
odor. You swab the sore and conduct an isolation streak on a blood agar plate. After
incubating the plate for 24 hours you notice that the red blood cells have been partially
lysed. What hemolysis activity are you observing? - ANS-Alpha
A patient walks into the clinic with a sore that appears to be primary Syphilis (a
spirochaete). What type of microscope will be used to confirm your diagnosis? -
ANS-Darkfield
A portal of entry for pathogens via sweat gland is: - ANS-The skin
A protein secreted by a bacterium that kills other bacterial strains is called: -
ANS-Bacteriocin
A site where microbe can survive, multiply, and serve as a continual source of infection
is called a(n): - ANS-Reservoir
A thin film of microbes on a slide is: - ANS-A smear
A virus can direct a host cell to make: - ANS-A. Viral nucleic acid
C. Viral proteins
A virus that can infect a bacterial cell is called a: - ANS-Bacteriophage
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