Chitin is a polymer composed of N-acetyl glucosamine monomers
__________________Indicate whether the statement is true or false.
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According to the fluid mosaic model of cell membranes, the fluid part of the model refers to ____
a. the constant movement of the hydrophilic tails in the interior of the membrane b. a thin layer of water found sandwiched between the two layers of phospholipids c. the phospholipid molecules which vibrate, spin, and exchange places within the same layer of the bilayer d. the free movement of cholesterol molecules within the membrane e. the frequent flip-flop of phospholipids from one side of the membrane to the other
Glucose is absorbed through the membranes of
the small intestine primarily by a. osmosis. b. bulk flow. c. transport proteins. d. endocytosis. e. facilitated diffusion
Currently, the most serious drug problem on
campuses is a. methamphetamine addiction. b. cocaine addiction. c. marijuana addiction. d. codeine addiction. e. binge drinking.
High titers of specific antibodies are components of
A. toxoids. B. attenuated vaccines. C. immune serum globulin (ISG). D. specific immune globulin (SIG). E. gamma globulin.