Science Assignment

Question 1

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Lipid soluble molecules, such as alcohols, cannot diffuse through the plasma membrane

Select one:

a.False

b.True

Question 2

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How do fat-soluble molecules normally get into a cell?

Select one:

a.They pass through protein pores in the cell membrane

b.They are absorbed by phagocytosis

c.They dissolve in the fat layers of the membrane and enter the cell by diffusion

d.They never get in

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The rate of diffusion of a particle across a membrane will increase if

Select one:

a.The thickness of the membrane increases

b.The number of protein channels increases

c.The size of the particle increases

d.The temperature decreases