Q:

Erythrocytes

Asmaa
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2022-07-05
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Erythrocytes:

  1. Are responsible for the major part of blood viscosity.
  2. Contain the enzyme carbonic anhydrase.
  3. Metabolize glucose to produce CO2 and H2O.
  4. Swell to bursting point when suspended in 0.9 per cent (150 mmol/litre) saline.
  5. Have rigid walls.
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Asmaa
2022-07-05
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A. True Blood viscosity rises exponentially with the haematocrit.

B. True It catalyses the reaction CO2+H2O= (H+) +(HCO3 -).

C. True Glycolysis generates the energy needed to maintain electrochemical gradients across their membranes.

D. False This is isotonic with their contents.

E. False The walls deform easily to squeeze through capillaries.

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