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Biol 141 Chapter 7 Questions And Answers Latest Update (2025)!!
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Biol 141 Chapter 7 Questions And Answers Latest Update (2025)!!
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Biol 141 Chapter 7 Questions AndAnswers Latest Update (2025)!!
Lipid - Answer macromolecule made mostly from carbon and hydrogen
atoms; includes fats, oils, and waxes
Protein - Answer An organic compound that is made of one or more
chains of amino acids and that is a principal component of all cells
Phospholipids - Answer A molecule that is a constituent of the inner
bilayer of biological membranes, having a polar, hydrophilic head and a
nonpolar, hydrophobic tail.
Amphipathic - Answer having both a hydrophilic region and a
hydrophobic region
Fluid Mosaic Model - Answer The currently accepted model of cell
membrane structure, which envisions the membrane as a mosaic of
individually inserted protein molecules drifting laterally in a fluid bilayer of
phospholipids.
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, Fluid membrane - Answer unsaturated tails prevent packing
Saturated membrane - Answer saturated hydrocarbon tails in
phospholipid bilayer
Fluidity buffer for membrane - Answer cholesterol
steroid cholesterol - Answer Help stabilize the membrane at warm
temperature but also helps keep the membrane fluid at lower temperatures
Integral proteins - Answer penetrate the hydrophobic interior of the lipid
bilayer
Peripheral proteins - Answer The proteins of a membrane that are not
embedded in the lipid bilayer; they are appendages loosely bound to the
surface of the membrane.
Functions of membrane proteins - Answer transport, enzymatic activity,
signal transduction, cell-cell recognition, intercellular joining, attachment to
the cytoskeleton and extracellular matrix
Carbohydrates function cell membrane - Answer act as cell
identification tags which are recognized by other cells, allows cells in an
embryo to sort themselves into tissues & organs, enables cells of the
immune system to recognize & reject foreign cells
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