A human RBC is approximately 6 µm in diameter. An unknown bacterium measures 1 ocular space using the oil immersion objective compared to 2 minor spaces on the stage micrometer. A) How big is the unknown bacterium (report in micrometers)? B) How does its size compare to the RBC (how many times bigger is one versus the other)?

The following is the formula to determine the size from minor spaces and ocular spaces on the stage micrometer:  

Size = Number of minor spaces * 10 micrometer / Number of ocular spaces

A = Number of minor spaces is 2 and the number of ocular space is 1,

Size = 2 * 10 / 1 = 20 micro micrometer. Thus, the size of a bacterium is 20 micrometers.  

B = Thus, it can be said that the size of the bacterium is almost 4 times bigger in comparison to a human red blood cell, which is 6 micrometers in diameter.  

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.