The ________ is the open area or central space in the GI tract
Fill in the blank(s) with the appropriate word(s).
lumen
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The purpose of sodium dodecyl sulfate (SDS) in a two-dimensional gel electrophoresis experiment is that it allows proteins to separated by
A. by charge only B. primarily by molecular mass C. by a combination of both size and mass D. net charge
Aquaporins
A) allow water to cross the plasma membrane via facilitated diffusion. B) allow water to cross the plasma membrane against its concentration gradient. C) allow for the active transport of water. D) are found in all cells.
An organ system consists of
A) organs that collectively perform a vital body function. B) a group of coordinated tissues. C) a collection of similar cells. D) blood, lymph, and other body fluids.
Interactions that involve a gain for both participants are called ____
Fill in the blank with the appropriate word.