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Parathyroid hormone regulates serum calcium by acting on bone, kidney, and intestines while regulating phosphate by stimulating the intestines and the kidneys, enhancing absorption and reabsorption respectively.
Chem
The parathyroid hormone is important in the regulation of:
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Question 17Selectable Answer
All of the following have been an inspection deficiency for CLIA-approved laboratories except:
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Question 18Selectable Answer
The difference between glass and plastic red stopper tubes is that the:
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Question 19Selectable Answer
As magnification INCREASES, the field of view will...
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Question 20Selectable Answer
Glucagon and epinephrine promote glycogenolysis, conversion of glycogen to glucose, which increases plasma glucose.
Cortisol along with glucagon increases gluconeogenesis, formation of glucose from noncarbohydrates which also raises plasma glucose concentration.
Chem
Which of the following hormones increases plasma glucose concentration by converting glycogen to glucose? Please select all correct answers
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Question 21Selectable Answer
CAMP is the correct answer because the case is typical of Streptococcus agalactiae(Group B strep). The main presumptive identification test is CAMP. Bile solubility is positive for
Streptococcus pneumonia. Coagulase would be positive for Staphylococcus aureus. PYR is positive for Streptococcus pyogenes (Group A strep) which is ruled out by the resistance to bacitracin.
Microbiology
Spinal fluid cultures on a 3-day-old infant revealed beta-hemolytic, Gram-positive cocci occurring in pairs and chains. The organism was catalase-negative and bile esculin-negative. Resistance to 0.04 U disk of bacitracin was noted. The other test necessary to identify this organism is a positive test by:
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Question 22Selectable Answer
% concentration (expressed as a proportion or ratio) x volume needed = mass of reagent to use
So... 10% (w/v) solution of sodium hydroxide x 200 mL needed = 20 grams of sodium hydroxide
How many grams of sodium hydroxide are required to prepare a 200 ml solution of a 10% (weight per volume) solution? (Atomic weights: Na = 23; 0 = 16; H = 1)
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Question 23Selectable Answer
The activities conducted in a laboratory with a certificate of waiver include:
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Question 24Selectable Answer
Troponin is a very specific biomarker that is released during cardiac injury or stress. CK is found not only in cardiac tissue, but also in muscle and brain tissue. LD levels can be elevated in cardiac events, tissue breakdown, and hemolysis. Myoglobin is elevated when muscle tissue is damaged and is not specific for the heart muscle.
Chemistry
Which one of the following is the MOST specific biochemical marker of myocardial infarction?
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Question 25Selectable Answer
The dematiaceous molds can be broadly separated into two major groups: the agents of chromomycosis that grow more slowly, maturing only after 7 days or more of incubation, and the more rapidly growing species that most commonly are clinically insignificant commensals or contaminants when recovered from clinical specimens, but in rare situations may cause opportunistic infections called phaeohyphomycosis.
Dematiaceous molds can be broadly separated into two major groups; the agents of chromomycosis and clinically insignificant commensals or contaminants. The agents of chromomycosis grow: more slowly than; more rapidly than; or generally at the same rate as the clinically insignificant commensals or contaminants?
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Question 26Selectable Answer
The membranes of ion selective electrodes will determine which analyte is measured by the electrode.
Chemistry
The selectivity of an ion-selective electrode is determined by the:
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Question 27Selectable Answer
Delayed hemolytic transfusion reactions (DHTR) usually occur within which time period?
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Question 28Selectable Answer
Convert the following temperature from Celsius to Fahrenheit
8 degrees C
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Question 29Selectable Answer
The tube to the left is a slant of esculin medium, the tube to the right contains heart infusion broth with 6.5% sodium chloride. The bacterial species characteristically producing the positive reactions seen in each of these tubes is most likely:
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Question 30Selectable Answer
An employer who fails to provide sufficient personal protective equipment (PPE) for employees may be fined by the:
