Which of the following statements describes the range of properties possible for proteins embedded in cell membranes?
A. Embedded membrane proteins are completely hydrophobic, with
no hydrophilic regions.
O B. The hydrophobic regions of a membrane protein are embedded in
the lipid bilayer, while the protruding parts of the protein are
hydrophilic regions.
O C. The hydrophilic regions of a membrane protein are embedded in
the lipid bilayer, while the protruding parts of the protein are
hydrophobic regions.
O D. Embedded membrane proteins are completely hydrophilic, with no
hydrophobic regions.

What is one function of the embedded proteins

Did you know that a blue wales tongue weighs more than an elephant?

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).