Erythrocytes swell or shrink rapidly in response to changes in the osmolarity of the blood by moving water molecules through plasma membrane channels call aquaporins (aqp). aqp1 is a tetramer that consists of four identical monomers, each of which has a transmembrane pore. a human erythrocyte has approximately 2 Γ 105 aqp1 monomers and a total volume of 5 Γ 10β11 ml. water molecules flow through the plasma membrane at a rate of 5 Γ 108 molecules per aqp1 tetramer per second.
calculate the number of water molecules in an erythrocyte. assume that the erythrocyte consists entirely of water. calculate the amount of time that it takes for the erythrocyte to lose half of its volume of water when it encounters the high osmolarity (1 m) in the interstitial fluid of the renal medulla.
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Chemistry, 21.06.2019 15:40, lexybellx3
Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.
Answers: 3
Chemistry, 22.06.2019 10:30, mv603177
Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic
Answers: 1
Erythrocytes swell or shrink rapidly in response to changes in the osmolarity of the blood by moving...
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