Our skin feels alive, but the first 25 layers are actually made up of dead skin cells. Approximately how long does it take a new skin cell formed in the dermis to reach the outer edge of the epidermis? A.
1 day
B.
6 weeks
C.
3 days
D.
3 weeks

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

the answer is a) cell division.

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bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.