We Can Test the Relative Permeability of a Phospholipid Bilayer

question 12

Multiple Choice

We can test the relative permeability of a phospholipid bilayer by using a synthetic membrane that does not contain any protein components.Some uncharged, polar molecules are found to diffuse freely across these membranes, to varying degrees.Which of the following has the lowest rate of diffusion across an artificial membrane? Why?

• A)glucose
• B)water
• C)glycerol
• D)ethanol

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Definitions:

Spectrum

A range or continuum within which objects, values, or phenomena possess a particular characteristic to varying degrees.

Lemon

A yellow, acidic fruit of the citrus family, known for its sour taste and high vitamin C content, often used in cooking and beverages.

Yellow Wavelengths

The segment of the light spectrum that is perceived by the human eye as yellow, typically around 570–590 nm.

Absorbs

The process by which one substance takes in or assimilates another, such as a sponge absorbing water.