A ruler will not be needed due to having a graduated cylinder which can help measure the volume of liquids
14 should be B if I can remember correctly, 15 is C
Answer:
Bacteria that are oxidase-negative may be anaerobic, aerobic, or facultative; the oxidase negative result just means that these organisms do not have the cytochrome c oxidase that oxidizes the test reagent. They may respire using other oxidases in electron transport.)