Which of the following is the type of bond holding K+ and I- ions in KI?
A) ionic bond
B) covalent bond
C) hydrogen bond
A
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Because hardly any oxygen (O2) was in the early Earth's atmosphere, the single-celled microorganisms probably used which of the following to produce energy to drive metabolic processes?
A. Aerobic cellular respiration. B. Anaerobic cellular respiration. C. Sulfuric acid respiration. D. Both aerobic and anaerobic cellular respiration. E. Sulfuric acid, aerobic and anaerobic respiration.
The electrons that are released by the splitting of H2O molecules during photosynthesis ultimately end up in: -glucose.
-ATP. -H2O -NADPH. -rubisco.
What role does safranin play in the Gram stain procedure?
A) primary stain B) mordant C) decolorizing agent D) counterstain E) negative stain
The more pathogenic Staphylococcus species in humans is identified by
a. fermentation of mannitol when growing on mannitol salt agar. b. incomplete hemolysis of red blood cells. c. production of leukocidins. d. both a and c.