erythrocyte membrane

[stleo019]

1)Membrane lipids from 4.74*10⁹ erythrocytes form a monolayer of 0.89 m² in water. The surface area of an average erythrocyte is ~ 100 mm². Show that the membrane is a bilayer.

2) How many moles of K⁺ will diffuse across the erythrocyte membrane in one minute under the following conditions:[K⁺]_in = 100 mM

 

[K⁺]_out = 15 mM

 

Surface Area of erythrocyte: 100 mm² = 100*10^-12 m²

 

Permeability P of K⁺ = 2.4*10^-10 cm-sec^-1

 

 

 

If the erythrocyte volume is 100 mm³, what percent of the internal K⁺ willl leak out in 1 minute?

 

 

[Greippi]

What aspect of that do you need help with? It's simple maths.

[Joshua201]

1)Membrane lipids from 4.74*10⁹ erythrocytes form a monolayer of 0.89 m² in water. The surface area of an average erythrocyte is ~ 100 mm². Show that the membrane is a bilayer.

2) How many moles of K⁺ will diffuse across the erythrocyte membrane in one minute under the following conditions:[K⁺]_in = 100 mM

 

[K⁺]_out = 15 mM

 

Surface Area of erythrocyte: 100 mm² = 100*10^-12 m²

 

Permeability P of K⁺ = 2.4*10^-10 cm-sec^-1

 

 

 

If the erythrocyte volume is 100 mm³, what percent of the internal K⁺ willl leak out in 1 minute?

you got it all figured out already