What makes phospholipids good at forming cellular membranes?
A. the polar and nonpolar regions create an amphipathic bilayer of phospholipids
B. the three saturated fatty tails in phospholipids create a semisolid like structure that maintains a cell's shape
C. regions of aliphatic and hydrophilic atoms causing an internalization of phosphorous making a bilayer
D. covalent and ionic bonds between glycerols create a tight seal around the cell
Answer: A
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To explain the origin of the nuclear genome, which of the following hypotheses are most widely accepted?
A. Endosymbiotic relationship. B. Symbiotic relationship. C. Mitochondrial relationship. D. Both the endosymbiotic and symbiotic relationships. E. Endosymbiotic, symbiotic and mitochondrial relationships.
The material released from bacteria that may lead to shock and death in septicemia is
A. exotoxin. B. protein A. C. endotoxin. D. interferon.
Which is more dangerous?
a. atrial fibrillation b. ventricular fibrillation
In an electron transport chain capable of dissimilatory sulfate reduction, the oxidation of sulfate to sulfide requires ________ electrons and the activation of sulfate by its covalent attachment to ________ to form APS.
Fill in the blank(s) with the appropriate word(s).