A phospholipid bilayer or lipid bilayer is a double layer of lipids in a cell membrane which has a hydrophobic and a hydrophilic part.
Hydrophobic - expelled by water
Hydrophilic - attracted to water
The layers form the cell membrane which means that it's functions are the same as the functions of a cell membrane, and are critic to the cells functioning.
Hope it helped,
BioTeacher101
Helicase enzyme work to unzip the two strands
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I'm not sure what the multiple-choice answers are but knowing that: abiotic factors are non-living chemical and physical parts of the environment that affect living organisms. But if there is any answers related to the cockroaches environment like Temperature and climate those may be the best choices.
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Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa. Since the cuticle of these animals typically forms a largely inelastic exoskeleton, it is shed during growth and a new, larger covering is formed. The remnants of the old, empty exoskeleton are called exuviae.
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