Within the framework of an experiment, describe the
a. independent variable:
b. dependent variable:
c. controlled variables:
a. independent variable: The treatment or condition under study.
b. dependent variable: The event or condition measured or observed when the results are gathered.
c. controlled variables: All other factors which the investigator attempts to keep the same for all groups under study.
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MacConkey agar is
A. a selective agar. B. a differential agar. C. a selective and differential agar. D. used to distinguish between bacteria by the type of hemolysis observed.
When you collect a sand dollar on the beach, you are looking at the shell of an echinoderm consisting of ossicles
formed from calcium carbonate crystals.
Indicate whether the statement is true or false.In what year did Stanley Prusiner discover prions?
a. 1928 b. 1979 c. 1997 d. 1982
Carpopedal spasm that occurs during respiratory alkalosis is caused by a(n):
A) decrease in arterial CO2. B) intracellular calcium shift. C) extracellular sodium shift. D) intracellular potassium shift.