Question at position 9 How is oxygen transported in the blood?It is dissolved by blood plasma.By platelets.By red blood cells.By white blood cells.Clear my selection

Question

Question at position 9 How is oxygen transported in the blood?It is dissolved by blood plasma.By platelets.By red blood cells.By white blood cells.Clear my selection

BlackTom AI · Accepted Answer

Consider how oxygen travels in the bloodstream across different components of blood.
Option 1: It is dissolved by blood plasma. While a small amount of oxygen does dissolve directly in plasma, this carries only a tiny fraction of the total O2—most of it is transported in another form. Thus this statement is incomplete and misleading as the primary transport mechanism.
Option 2: By platelets. Platelets are involved in clotting and do not play a role in oxygen transport. This option confuses hemostasis with gas transport and is incorrect.
Option 3: By red blood cells. This is the correct mechanism: oxygen binds to hemoglobin inside red blood cells to be carried to tissues (forming oxyhemoglobin); this allows efficient transport despite plasma limitations. This option aligns with the well-established role of erythrocytes in gas transport.
Option 4: By white blood cells. White blood cells function in immune defense and do not participate in oxygen transport. They are not carriers of oxygen, so this choice is inaccurate.

Question at position 9 How is oxygen transported in the blood?It is dissolved by blood plasma.By platelets.By red blood cells.By white blood cells.Clear my selectionSingle choice

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