$56-$which of the following statements is not correct about the mechanisms involving in the generation of action potential $?$

A$)$ n$-$gate is closed during the rising phase of the action potential

B$)$ h$-$gate is in the closed state during the rising phase of the action potential

C$)$ m$-$gate is the mine mechanism in the rising phase of the action potential

D$)$ the reason for the rapid rise of the action potential compared to the repolarization phase is that m$-$gate bas fast dynamics compared to n$-$gate

E$)$ n$-$gate contributes to the repolarization $($decay$)$phase of the action potential

$57-O_2$ molecules penetrate the cell membrane through the lipid structure $.$ what is the $O_2$ flux $($in moles $\frac{?}{cm2})$ when a concentration difference of $0\mathrm{.}1mM$ exists across a cell membrane with a thickness of $50{10}^{-8}cm$ and the diffusion constant of the membrane to oxygen is $4\mathrm{.}5{10}^{-6}cm\frac{2}{s}.$ take lipid solubility constant as $5{10}^{-6})$

A$)0\mathrm{.}2$ moles $\frac{?}{cm2.s}$

B$)1\mathrm{.}5{10}^{-6}$mole$\frac{s}{c}{m}^2.s$

$={50\mathrm{.}10}^{-8}$

C$)4\mathrm{.}5{10}^{-12}$mole$\frac{s}{c}{m}^{2}s$

D$)3{10}^{-12}$mole$\frac{s}{c}{m}^2.s$

$0,1$ m$$ knos:$-$ for

E$)0\mathrm{.}2{10}^{-6}$ moles $\frac{?}{c{m}^2.s}$

al flux?