For each of the following sentences, fill in the blanks with the best word or ph

Question

For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used;each word or phrase should be used only once. The specialized functions of different membranes are largely determined by the _____ they contain. Membrane lipids are _____ molecules, composed of a hydrophilic portion and a hydrophobic portion. All cell membranes have the same _____ of the structure, with the phospholipids facing into the interior of the membrane and the _____ on the outside. The most common lipids in most _____. The head group of a cell membranes are the glycolipid is composed of _____ amphipathic hydrophobic phosphatidylserine cholesterol fatty acid tails glycolipids hydrophilic head group lipid bilaryer lipid monolayer lipids phosphatidylcholine phospholipids proteins sterols sugars For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used, each word or phrase should be used only once. A molecule moves down its concentration gradient by _____ transport, but requires _____ transport to move up its concentration gradient. Transporter proteins and ion channels function in membrane transport by providing a _____ pathway through the membrane for specific polar solutes or inorganic ions. ______ are highly selective in the solutes they transport, binding the solute at a specific site and changing conformation so as to transport the solute across the membrane. On the other hand, _____ discriminate between solutes mainly on the basis of size and electrical charge. active amino acid amphipathic proteins hydrophilic hydrophobic ion channels noncovalent passive transporter

Explanation / Answer

3)Fill in the blanks--1)phospholipids 2)amphipathic 3)lipid bilayer 4)fatty acid tails 5)hydrophilic head groups 6)glycolipids 7)sugars

4) 1)active 2)passive 3)noncovalent 4)ion-channels 5)transporter

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