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bonufazy [111]
3 years ago
6

Permeability is the condition of being capable of having materials flow into and out of a membrane. The permeability of a cell m

embrane is determined by how easily a molecule can diffuse across the membrane. Usually, only molecules that are fat-soluble can permeate across a cell membrane. Why is this the case?
Physics
2 answers:
AveGali [126]3 years ago
8 0

Permeability is the condition of being capable of having materials flow into and out of a membrane. The permeability of a cell membrane is determined by how easily a molecule can diffuse across the membrane. Usually, only molecules that are fat-soluble can permeate across a cell membrane. This is because the layer that is exposed on the linings of the cell membrane is nonpolar and can therefore allow the fat-soluble molecule to pass through.

ddd [48]3 years ago
6 0

Answer:Cell membranes are composed of a lipid bilayer.

Explanation:

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3 years ago
Determine the magnitude of force F so that the resultant FR of the three forces is as small as possible.
Kamila [148]

Answer: FR=2.330kN

Explanation:

Write down x and y components.

Fx= FSin30°

Fy= FCos30°

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(FR) x= 5-Fsin30°= 5-0.5F

(FR) y= Fcos30°-4= 0.8660-F

Use Pythagoras theorem

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2FRdFR/dF= 2F- 11.93

Set dFR/dF to 0

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Substitute value back into FR

FR= √F2(F square) - 11.93F + 41

FR=√(5.964)(5.964)-11.93(5.964)+41

FR= 2.330kN

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3 years ago
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