Refer to the graph above. Which of the following statements regarding the graph is true? Reaction 2 occurs faster than Reaction 3 because Reaction 2 requires more energy than Reaction 3.

Reaction 2 and 3 are the same reaction, but Reaction 3 is occuring in the presence of a catalyst.

Reaction 2 and 3 are the same, except Reaction 2 is occurring in the presence of a catalyst.

Reaction 1 requires less activation energy than both Reaction 2 and Reaction 3.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

50% lit on the left side

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.