Examlex
Mass spectrometry and infrared spectroscopy are complementary techniques because mass spectrometry provides information about the molar mass and formula while infrared spectroscopy helps identify the functional groups in the formula.
Carrier Proteins
Proteins involved in the movement of ions, small molecules, or macromolecules, such as glucose, across a cell membrane.
Aquaporins
Membrane proteins that serve as channels in the transfer of water, and sometimes small solutes across the cell membrane.
Active Transport
The movement of substances across cell membranes against their concentration gradient, requiring energy expenditure by the cell.
Connexin Molecules
Protein molecules that assemble into gap junctions, facilitating communication between adjacent cells by allowing the passage of ions and small molecules.
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