What are two of the jobs of proteins in the cell membrane? 1)cell-to-cell communication, cell-pathogen interactions
2)determine blood groups, allow large molecules to pass through
3)cell-to-cell communication, allow large molecules to pass through
4)maintain the flexibility of the membrane, block all harmful substances from entering

ExplSome of these interactions are meant for big molecules that enter and exit the cell ... This allows the protein to be directly integrated into the cell membrane when the ... There are three different styles of endocytosis: 1) phagocytosis, 2) pinocytosis, ... For example, white blood cells recognize pathogens, such as viruses or ...

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

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