. Observe the document then answer the following questions. All liquids / fluids on the Speed of reaction / % Activity of the enzyme
universe & inside our
Pepsin Salivary
Trypsin
bodies have a specific
Amylase
acidity value which is
known as PH value.
Agrade 9 student has the
following two wonderings:
PHS
Hypothesis -1: Enzyme
acts at Any PH.
Hypothesis -2: Enzyme
acts at a specific range of
More Acidic
PH.
Several measurements were done on three different enzymes to verify one of the two hypotheses.
a- Indicate the objective (aim) of such measurements.

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answer; both surfaces of the membrane are nonpermeable

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.