What goes into the photosystems and what comes out of the systems. where will these products go?

The various photosystems depend on the sunlight to prepare food. These photosystems are known as the autotrophs. The unicellular autotrophs like the cynobactera have the chlorophyll pigment in their body. This pigment absorbs the energy from the sunlight to cause a reaction between the absorbed carbon dioxide and water to form glucose and oxygen. Oxygen gets released into the atmosphere as a byproduct of the reaction. In cynobacteria there is no defined place for the storage of glucose. But in higher multi-cellular organisms like plants, the storage happens in the stalk of the leaves.

the backbone of the dna and rna compound is sugar phosphate.

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.